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Bram Cymet

Video Problems

Hi,

I am working on developing a small video player using gstreamer and pygst.

It works perfectly fine on my laptop but when I move it to my target
hardware I am having some problems.

I have the error "could not open resource for reading"

Is there anyway I can tell what resource this is referring to? Could
this simply be a permissions error on a file or something more hardware
related.

Thanks,

--
Bram Cymet
Software Developer
Canadian Bank Note Co. Ltd.
Cell: 613-608-9752

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Kapil Agrawal

Re: Video Problems

Bram,

Can you give us more info on your problem, and what pipeline you use ?
From the error it seems permission issue .

Check your pipeline with GST_DEBUG=*:2

best
kapil

On Sun, May 16, 2010 at 6:53 PM, Bram Cymet <[hidden email]> wrote:

Hi,

I am working on developing a small video player using gstreamer and pygst.

It works perfectly fine on my laptop but when I move it to my target
hardware I am having some problems.

I have the error "could not open resource for reading"

Is there anyway I can tell what resource this is referring to? Could
this simply be a permissions error on a file or something more hardware
related.

Thanks,

--
Bram Cymet
Software Developer
Canadian Bank Note Co. Ltd.
Cell: 613-608-9752

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http://www.linkedin.com/in/kapilagrawal

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Bram Cymet

Re: Video Problems

Hi Kapil,

It turned out that it was a file path error. I was using a relative filepath instead of an absolute one for the uri property.

Now I am getting a different error:

"Could not determine type of stream"

This is the debug output:

:00:00.036578746 5554 0x836ba28 WARN      GST_PLUGIN_LOADING gstplugin.c:422:gst_plugin_register_func: plugin "/lib/gstreamer-0.10/libgstpython.so" failed to initialise
0:00:00.103071770 5553 0x836ba28 WARN                  ffmpeg gstffmpegenc.c:1162:gst_ffmpegenc_register: Couldn't get source caps for encoder jpegls
0:00:00.112578785 5553 0x836ba28 WARN                  ffmpeg gstffmpegenc.c:1162:gst_ffmpegenc_register: Couldn't get source caps for encoder sgi
0:00:00.112804628 5553 0x836ba28 WARN                  ffmpeg gstffmpegenc.c:1162:gst_ffmpegenc_register: Couldn't get source caps for encoder targa
0:00:00.112881659 5553 0x836ba28 WARN                  ffmpeg gstffmpegenc.c:1162:gst_ffmpegenc_register: Couldn't get source caps for encoder tiff
0:00:00.114539693 5553 0x836ba28 WARN                  ffmpeg gstffmpegenc.c:1162:gst_ffmpegenc_register: Couldn't get source caps for encoder dvbsub
0:00:00.114645116 5553 0x836ba28 WARN                  ffmpeg gstffmpegenc.c:1162:gst_ffmpegenc_register: Couldn't get source caps for encoder dvdsub
0:00:00.114963934 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'bethsoftvid'
0:00:00.115027519 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'bfi'
0:00:00.115128329 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'c93'
0:00:00.115493642 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'dsicinvideo'
0:00:00.115606661 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'dxa'
0:00:00.115662837 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'eacmv'
0:00:00.115715976 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'eatgq'
0:00:00.115768267 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'eatgv'
0:00:00.115820438 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'eatqi'
0:00:00.115937642 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder '8svx_exp'
0:00:00.115993518 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder '8svx_fib'
0:00:00.116046342 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'escape124'
0:00:00.117047213 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'jpegls'
0:00:00.117513599 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'motionpixels'
0:00:00.118274272 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'pcx'
0:00:00.118549527 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'ptx'
0:00:00.118780973 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'rl2'
0:00:00.119138756 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'sgi'
0:00:00.119211362 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'smackvid'
0:00:00.119414198 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'sunrast'
0:00:00.119574530 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'targa'
0:00:00.119696713 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'thp'
0:00:00.119753466 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'tiertexseqvideo'
0:00:00.119814884 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'tiff'
0:00:00.120080054 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'txd'
0:00:00.120222770 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'vb'
0:00:00.122110494 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'dsicinaudio'
0:00:00.124190601 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'smackaud'
0:00:00.128732925 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'dvbsub'
0:00:00.128835386 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'dvdsub'
0:00:00.128891771 5553 0x836ba28 WARN                  ffmpeg gstffmpegdec.c:2718:gst_ffmpegdec_register: Couldn't get sink caps for decoder 'xsub'
0:00:00.134809645 5553 0x836ba28 WARN                  ffmpeg gstffmpegmux.c:820:gst_ffmpegmux_register: Couldn't get sink caps for muxer ass. Most likely because no input format mapping exists.
0:00:00.142418361 5553 0x836ba28 WARN                GST_PADS gstpad.c:697:gst_pad_set_active:<typefind:sink> Failed to activate pad

gsttypefindelement.c(889): gst_type_find_element_activate (): /GstPlayBin:player/GstDecodeBin:decodebin0/GstTypeFindElement:typefind

and my code is attached.

Thanks for your help,

Bram

On 05/17/2010 10:10 AM, Kapil Agrawal wrote:

Bram,

Can you give us more info on your problem, and what pipeline you use ?
>From the error it seems permission issue .

Check your pipeline with GST_DEBUG=*:2

best
kapil

On Sun, May 16, 2010 at 6:53 PM, Bram Cymet <[hidden email]> wrote:

Hi,

I am working on developing a small video player using gstreamer and pygst.

It works perfectly fine on my laptop but when I move it to my target
hardware I am having some problems.

I have the error "could not open resource for reading"

Is there anyway I can tell what resource this is referring to? Could
this simply be a permissions error on a file or something more hardware
related.

Thanks,

--
Bram Cymet
Software Developer
Canadian Bank Note Co. Ltd.
Cell: 613-608-9752

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Bram Cymet
Software Developer
Canadian Bank Note Co. Ltd.
Cell: 613-608-9752

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gsvid.py (1K) Download Attachment

zelalem

How to create a video recording buffer from a live broadcast and read from it at the same time

In reply to this post by Bram Cymet

Hi I want to create a program using gstreamer that when activated starts to record a live broadcast and when requested starts to deliver what is being recorded from the beginning of the record while keeping on recording on the other end (the live broadcast). At some point I want to ignore recording and go live. I hope gstreamer could be used to do this. Basically my problem is to create a buffer of a file that I can read and write into it at the same time. Please advice me how I can do this.

Thank you.

Best regards,

- Zelalem S.

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Marco Ballesio

Re: How to create a video recording buffer from a live broadcast and read from it at the same time

Hi,

On Wed, Nov 24, 2010 at 12:13 PM, Zelalem Sintayehu
<[hidden email]> wrote:
> Hi I want to create a program using gstreamer that when activated starts to
> record a live broadcast and when requested starts to deliver what is being
> recorded from the beginning of the record while keeping on recording on the
> other end (the live broadcast). At some point I want to ignore recording and
> go live. I hope gstreamer could be used to do this. Basically my problem is
> to create a buffer of a file that I can read and write into it at the same
> time. Please advice me how I can do this.

Imo there are many ways for achieving this, some of which being easy,
other more difficult. The freedom you'll have in your design depends
on some variables:

- You'll anyway have to use a signalling protocol (e.g. RTSP, SIP,
XMPP, etc..) to make it working, so you'll have to carefully pick the
one which better suits your requirements (e.g. RTSP is pretty well
supported from GStreamer from both sides, for SIP or XMPP I suggest
you to give a look to the telepathy framework).

- Are you planning to make it compatible with standard clients? If
yes, which protocols do they use? If not, are you planning to write
the client application as well?

- Do you have resource constraints (network bandwidth, CPU, disk, memory)?

- Is it possible that multiple clients will connect to the same server?

If you can clarify the points of above it would be possible to give
you, in turn, an appropriate answer.

Regards

>
> Thank you.
>
> Best regards,
>
> - Zelalem S.
>
>
>
> ------------------------------------------------------------------------------
> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> Tap into the largest installed PC base & get more eyes on your game by
> optimizing for Intel(R) Graphics Technology. Get started today with the
> Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
> http://p.sf.net/sfu/intelisp-dev2dev
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>

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zelalem

Re: How to create a video recording buffer from a live broadcast and read from it at the same time

Hi Dear <span dir="ltr" id="InlineMenuTemplateicTmInlineMenuTemplate0_name" target="_top" href="http://bl157w.blu157.mail.live.com/mail/InboxLight.aspx?n=1420904971#" title="gibrovacco@gmail.com" onclick="i = new Image(); i.src = 'http://g.live.com/_9uxp9en-us/ic_dn??su=http://shared.live.com/Live.Mail';return false;">Marco Ballesio thank you for your prompt response. I'm a student and want to do this as a project. Basically I want to have a kind of network based recorder which is controlled by either SIP or RTSP from an application server. Those are the two protocols that I was thinking about to use. Currently I have an RTSP proxy that I developed which is controlled by a SIP Application Server (AS) and delivers the media to a client. So I want to extend it a little further so that when it is told to pause, it will pause the stream it gets from the server (which basically means recording it for later use) and again when told to resume starts the delivery from the place where it was paused. The client (a SIP) is just a passive media reciever. the media control comes from the application server. I also want to use a client with basic RTSP capability but still the media control comes from the AS or media controller. With regard to bandwith limitation I don't have badndwidth costraints, but I'm thinking that the recorder should have a limited (specified) buffer size. It can't go on recording forever. I also only want this to work for one client. Hope I have attended your queries.

Once again thank you for your support.

Best regards,

- Zelalem S.

> Date: Thu, 25 Nov 2010 13:39:37 +0200
> From: [hidden email]
> To: [hidden email]
> Subject: Re: [gst-devel] How to create a video recording buffer from a live broadcast and read from it at the same time
>
> Hi,
>
> On Wed, Nov 24, 2010 at 12:13 PM, Zelalem Sintayehu
> <[hidden email]> wrote:
> > Hi I want to create a program using gstreamer that when activated starts to
> > record a live broadcast and when requested starts to deliver what is being
> > recorded from the beginning of the record while keeping on recording on the
> > other end (the live broadcast). At some point I want to ignore recording and
> > go live. I hope gstreamer could be used to do this. Basically my problem is
> > to create a buffer of a file that I can read and write into it at the same
> > time. Please advice me how I can do this.
>
> Imo there are many ways for achieving this, some of which being easy,
> other more difficult. The freedom you'll have in your design depends
> on some variables:
>
> - You'll anyway have to use a signalling protocol (e.g. RTSP, SIP,
> XMPP, etc..) to make it working, so you'll have to carefully pick the
> one which better suits your requirements (e.g. RTSP is pretty well
> supported from GStreamer from both sides, for SIP or XMPP I suggest
> you to give a look to the telepathy framework).
>
> - Are you planning to make it compatible with standard clients? If
> yes, which protocols do they use? If not, are you planning to write
> the client application as well?
>
> - Do you have resource constraints (network bandwidth, CPU, disk, memory)?
>
> - Is it possible that multiple clients will connect to the same server?
>
> If you can clarify the points of above it would be possible to give
> you, in turn, an appropriate answer.
>
> Regards
>
> >
> > Thank you.
> >
> > Best regards,
> >
> > - Zelalem S.
> >
> >
> >
> > ------------------------------------------------------------------------------
> > Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> > Tap into the largest installed PC base & get more eyes on your game by
> > optimizing for Intel(R) Graphics Technology. Get started today with the
> > Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
> > http://p.sf.net/sfu/intelisp-dev2dev
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
>
> ------------------------------------------------------------------------------
> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> Tap into the largest installed PC base & get more eyes on your game by
> optimizing for Intel(R) Graphics Technology. Get started today with the
> Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
> http://p.sf.net/sfu/intelisp-dev2dev
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

Marco Ballesio

Re: How to create a video recording buffer from a live broadcast and read from it at the same time

Hi,

On Thu, Nov 25, 2010 at 3:33 PM, Zelalem Sintayehu <[hidden email]> wrote:

> Hi Dear Marco Ballesio thank you for your prompt response. I'm a student and
> want to do this as a project. Basically I want to have a kind of network
> based recorder which is controlled by either SIP or RTSP from an application
> server. Those are the two protocols that I was thinking about to use.
> Currently I have an RTSP proxy that I developed which is controlled by a SIP
> Application Server (AS) and delivers the media to a client. So I want to
> extend it a little further so that when it is told to pause, it will pause
> the stream it gets from the server (which basically means recording it for
> later use) and again when told to resume starts the delivery from the place
> where it was paused. The client (a SIP) is just a passive media reciever.

in my understanding it should be possible to do all of this with RTSP
only. Do you have special requirements about using SIP in your AS
media controller?

> the media control comes from the application server. I also want to use a
> client with basic RTSP capability but still the media control comes from the
> AS or media controller. With regard to bandwith limitation I don't have
> badndwidth costraints, but I'm thinking that the recorder should have a
> limited (specified) buffer size. It can't go on recording forever. I also
> only want this to work for one client. Hope I have attended your queries.
>
> Once again thank you for your support.

A few ideas. Disclaimer: I've not personally tried them, so your
mileage to get the thing working may vary..

Wim's rtsp streaming server will probably help you with all of this:

http://people.freedesktop.org/~wtay/

in my understanding, you would need to setup two servers:

- the first one streaming from the camera AND locally saving to file
(through, between the others, a tee element and an mp4mux with the
option "faststart" set to true).

- the second one providing the file saved from the first one.

by periodically looping (through a timer) on the first server you may
implement a basic way to re-start the file each n minutes. More
elegant ways may involve a valve element and transitions to NULL
state/eos for the filesink element only.

Regards

>
> Best regards,
>
> - Zelalem S.
>
>
>
>
>> Date: Thu, 25 Nov 2010 13:39:37 +0200
>> From: [hidden email]
>> To: [hidden email]
>> Subject: Re: [gst-devel] How to create a video recording buffer from a
>> live broadcast and read from it at the same time
>>
>> Hi,
>>
>> On Wed, Nov 24, 2010 at 12:13 PM, Zelalem Sintayehu
>> <[hidden email]> wrote:
>> > Hi I want to create a program using gstreamer that when activated starts
>> > to
>> > record a live broadcast and when requested starts to deliver what is
>> > being
>> > recorded from the beginning of the record while keeping on recording on
>> > the
>> > other end (the live broadcast). At some point I want to ignore recording
>> > and
>> > go live. I hope gstreamer could be used to do this. Basically my problem
>> > is
>> > to create a buffer of a file that I can read and write into it at the
>> > same
>> > time. Please advice me how I can do this.
>>
>> Imo there are many ways for achieving this, some of which being easy,
>> other more difficult. The freedom you'll have in your design depends
>> on some variables:
>>
>> - You'll anyway have to use a signalling protocol (e.g. RTSP, SIP,
>> XMPP, etc..) to make it working, so you'll have to carefully pick the
>> one which better suits your requirements (e.g. RTSP is pretty well
>> supported from GStreamer from both sides, for SIP or XMPP I suggest
>> you to give a look to the telepathy framework).
>>
>> - Are you planning to make it compatible with standard clients? If
>> yes, which protocols do they use? If not, are you planning to write
>> the client application as well?
>>
>> - Do you have resource constraints (network bandwidth, CPU, disk, memory)?
>>
>> - Is it possible that multiple clients will connect to the same server?
>>
>> If you can clarify the points of above it would be possible to give
>> you, in turn, an appropriate answer.
>>
>> Regards
>>
>> >
>> > Thank you.
>> >
>> > Best regards,
>> >
>> > - Zelalem S.
>> >
>> >
>> >
>> >
>> > ------------------------------------------------------------------------------
>> > Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
>> > Tap into the largest installed PC base & get more eyes on your game by
>> > optimizing for Intel(R) Graphics Technology. Get started today with the
>> > Intel(R) Software Partner Program. Five $500 cash prizes are up for
>> > grabs.
>> > http://p.sf.net/sfu/intelisp-dev2dev
>> > _______________________________________________
>> > gstreamer-devel mailing list
>> > [hidden email]
>> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>> >
>> >
>>
>>
>> ------------------------------------------------------------------------------
>> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
>> Tap into the largest installed PC base & get more eyes on your game by
>> optimizing for Intel(R) Graphics Technology. Get started today with the
>> Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
>> http://p.sf.net/sfu/intelisp-dev2dev
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
> ------------------------------------------------------------------------------
> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> Tap into the largest installed PC base & get more eyes on your game by
> optimizing for Intel(R) Graphics Technology. Get started today with the
> Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
> http://p.sf.net/sfu/intelisp-dev2dev
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>

zelalem

Re: How to create a video recording buffer from a live broadcast and read from it at the same time

Hi Marco Ballesio thank you again for the support. Before I start to implement your proposals, I want to ask you some questions. Let me respond to your request first
> only. Do you have special requirements about using SIP in your AS
> media controller?
No, I don't have. I can use RTSP.

> Wim's rtsp streaming server will probably help you with all of this:
Thank you. I'll download and check it.

My questions are:
- Is it possible to read from a file that is being written by another process? I mean the second server is going to read from teh file that the first server is writing to.

> by periodically looping (through a timer) on the first server you may
> implement a basic way to re-start the file each n minutes.

Please clarify what you mean by restart the file.

> More elegant ways may involve a valve element and transitions to NULL
> state/eos for the filesink element only.

What will this (valve) element do?

Thank you.

Best regards,

- Zelalem S.

> Date: Thu, 25 Nov 2010 19:59:05 +0200
> From: [hidden email]
> To: [hidden email]
> Subject: Re: [gst-devel] How to create a video recording buffer from a live broadcast and read from it at the same time
>
> Hi,
>
> On Thu, Nov 25, 2010 at 3:33 PM, Zelalem Sintayehu <[hidden email]> wrote:
> > Hi Dear Marco Ballesio thank you for your prompt response. I'm a student and
> > want to do this as a project. Basically I want to have a kind of network
> > based recorder which is controlled by either SIP or RTSP from an application
> > server. Those are the two protocols that I was thinking about to use.
> > Currently I have an RTSP proxy that I developed which is controlled by a SIP
> > Application Server (AS) and delivers the media to a client. So I want to
> > extend it a little further so that when it is told to pause, it will pause
> > the stream it gets from the server (which basically means recording it for
> > later use) and again when told to resume starts the delivery from the place
> > where it was paused. The client (a SIP) is just a passive media reciever.
>
> in my understanding it should be possible to do all of this with RTSP
> only. Do you have special requirements about using SIP in your AS
> media controller?
>
> > the media control comes from the application server. I also want to use a
> > client with basic RTSP capability but still the media control comes from the
> > AS or media controller. With regard to bandwith limitation I don't have
> > badndwidth costraints, but I'm thinking that the recorder should have a
> > limited (specified) buffer size. It can't go on recording forever. I also
> > only want this to work for one client. Hope I have attended your queries.
> >
> > Once again thank you for your support.
>
> A few ideas. Disclaimer: I've not personally tried them, so your
> mileage to get the thing working may vary..
>
> Wim's rtsp streaming server will probably help you with all of this:
>
> http://people.freedesktop.org/~wtay/
>
> in my understanding, you would need to setup two servers:
>
> - the first one streaming from the camera AND locally saving to file
> (through, between the others, a tee element and an mp4mux with the
> option "faststart" set to true).
>
> - the second one providing the file saved from the first one.
>
> by periodically looping (through a timer) on the first server you may
> implement a basic way to re-start the file each n minutes. More
> elegant ways may involve a valve element and transitions to NULL
> state/eos for the filesink element only.
>
> Regards
>
> >
> > Best regards,
> >
> > - Zelalem S.
> >
> >
> >
> >
> >> Date: Thu, 25 Nov 2010 13:39:37 +0200
> >> From: [hidden email]
> >> To: [hidden email]
> >> Subject: Re: [gst-devel] How to create a video recording buffer from a
> >> live broadcast and read from it at the same time
> >>
> >> Hi,
> >>
> >> On Wed, Nov 24, 2010 at 12:13 PM, Zelalem Sintayehu
> >> <[hidden email]> wrote:
> >> > Hi I want to create a program using gstreamer that when activated starts
> >> > to
> >> > record a live broadcast and when requested starts to deliver what is
> >> > being
> >> > recorded from the beginning of the record while keeping on recording on
> >> > the
> >> > other end (the live broadcast). At some point I want to ignore recording
> >> > and
> >> > go live. I hope gstreamer could be used to do this. Basically my problem
> >> > is
> >> > to create a buffer of a file that I can read and write into it at the
> >> > same
> >> > time. Please advice me how I can do this.
> >>
> >> Imo there are many ways for achieving this, some of which being easy,
> >> other more difficult. The freedom you'll have in your design depends
> >> on some variables:
> >>
> >> - You'll anyway have to use a signalling protocol (e.g. RTSP, SIP,
> >> XMPP, etc..) to make it working, so you'll have to carefully pick the
> >> one which better suits your requirements (e.g. RTSP is pretty well
> >> supported from GStreamer from both sides, for SIP or XMPP I suggest
> >> you to give a look to the telepathy framework).
> >>
> >> - Are you planning to make it compatible with standard clients? If
> >> yes, which protocols do they use? If not, are you planning to write
> >> the client application as well?
> >>
> >> - Do you have resource constraints (network bandwidth, CPU, disk, memory)?
> >>
> >> - Is it possible that multiple clients will connect to the same server?
> >>
> >> If you can clarify the points of above it would be possible to give
> >> you, in turn, an appropriate answer.
> >>
> >> Regards
> >>
> >> >
> >> > Thank you.
> >> >
> >> > Best regards,
> >> >
> >> > - Zelalem S.
> >> >
> >> >
> >> >
> >> >
> >> > ------------------------------------------------------------------------------
> >> > Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> >> > Tap into the largest installed PC base & get more eyes on your game by
> >> > optimizing for Intel(R) Graphics Technology. Get started today with the
> >> > Intel(R) Software Partner Program. Five $500 cash prizes are up for
> >> > grabs.
> >> > http://p.sf.net/sfu/intelisp-dev2dev
> >> > _______________________________________________
> >> > gstreamer-devel mailing list
> >> > [hidden email]
> >> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >> >
> >> >
> >>
> >>
> >> ------------------------------------------------------------------------------
> >> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> >> Tap into the largest installed PC base & get more eyes on your game by
> >> optimizing for Intel(R) Graphics Technology. Get started today with the
> >> Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
> >> http://p.sf.net/sfu/intelisp-dev2dev
> >> _______________________________________________
> >> gstreamer-devel mailing list
> >> [hidden email]
> >> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> > ------------------------------------------------------------------------------
> > Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> > Tap into the largest installed PC base & get more eyes on your game by
> > optimizing for Intel(R) Graphics Technology. Get started today with the
> > Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
> > http://p.sf.net/sfu/intelisp-dev2dev
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
>
> ------------------------------------------------------------------------------
> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> Tap into the largest installed PC base & get more eyes on your game by
> optimizing for Intel(R) Graphics Technology. Get started today with the
> Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
> http://p.sf.net/sfu/intelisp-dev2dev
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

Marco Ballesio

Re: How to create a video recording buffer from a live broadcast and read from it at the same time

Hi,

a few pointers below, but I suggest you to anyway read the online
documentation/check the sources to know something more.

On Fri, Nov 26, 2010 at 11:40 AM, Zelalem Sintayehu
<[hidden email]> wrote:

> Hi Marco Ballesio thank you again for the support. Before I start to
> implement your proposals, I want to ask you some questions. Let me respond
> to your request first
>> only. Do you have special requirements about using SIP in your AS
>> media controller?
> No, I don't have. I can use RTSP.
>
>> Wim's rtsp streaming server will probably help you with all of this:
> Thank you. I'll download and check it.
>
> My questions are:
> - Is it possible to read from a file that is being written by another
> process? I mean the second server is going to read from teh file that the
> first server is writing to.

Yes it is and it *should* work as long as the consumer is not faster
than the producer. What I don't exactly know is if the server
connected to the camera will continue recording even when no rtsp
clients are connected to it, but maybe you could give it a try.

>
>> by periodically looping (through a timer) on the first server you may
>> implement a basic way to re-start the file each n minutes.
>
> Please clarify what you mean by restart the file.

In GStreamer terms, going to NULL, and then to PLAYING again. Check
the "Application development manual":

http://www.gstreamer.net/data/doc/gstreamer/head/manual/html/index.html

for more info.

>
>> More elegant ways may involve a valve element and transitions to NULL
>> state/eos for the filesink element only.
>
> What will this (valve) element do?

Here it is:

http://www.gstreamer.net/data/doc/gstreamer/head/gst-plugins-bad-plugins/html/gst-plugins-bad-plugins-valve.html

basically you can dynamically connect/disconnect elements to a
pipeline when setting it to drop buffers. I'd suggest you to
investigate on it only after you've maturised a basic knowledge about
gstreamer.

Regards

>
> Thank you.
>
> Best regards,
>
>
> - Zelalem S.
>
>
>> Date: Thu, 25 Nov 2010 19:59:05 +0200
>> From: [hidden email]
>> To: [hidden email]
>> Subject: Re: [gst-devel] How to create a video recording buffer from a
>> live broadcast and read from it at the same time
>>
>> Hi,
>>
>> On Thu, Nov 25, 2010 at 3:33 PM, Zelalem Sintayehu <[hidden email]>
>> wrote:
>> > Hi Dear Marco Ballesio thank you for your prompt response. I'm a student
>> > and
>> > want to do this as a project. Basically I want to have a kind of network
>> > based recorder which is controlled by either SIP or RTSP from an
>> > application
>> > server. Those are the two protocols that I was thinking about to use.
>> > Currently I have an RTSP proxy that I developed which is controlled by a
>> > SIP
>> > Application Server (AS) and delivers the media to a client. So I want to
>> > extend it a little further so that when it is told to pause, it will
>> > pause
>> > the stream it gets from the server (which basically means recording it
>> > for
>> > later use) and again when told to resume starts the delivery from the
>> > place
>> > where it was paused. The client (a SIP) is just a passive media
>> > reciever.
>>
>> in my understanding it should be possible to do all of this with RTSP
>> only. Do you have special requirements about using SIP in your AS
>> media controller?
>>
>> > the media control comes from the application server. I also want to use
>> > a
>> > client with basic RTSP capability but still the media control comes from
>> > the
>> > AS or media controller. With regard to bandwith limitation I don't have
>> > badndwidth costraints, but I'm thinking that the recorder should have a
>> > limited (specified) buffer size. It can't go on recording forever. I
>> > also
>> > only want this to work for one client. Hope I have attended your
>> > queries.
>> >
>> > Once again thank you for your support.
>>
>> A few ideas. Disclaimer: I've not personally tried them, so your
>> mileage to get the thing working may vary..
>>
>> Wim's rtsp streaming server will probably help you with all of this:
>>
>> http://people.freedesktop.org/~wtay/
>>
>> in my understanding, you would need to setup two servers:
>>
>> - the first one streaming from the camera AND locally saving to file
>> (through, between the others, a tee element and an mp4mux with the
>> option "faststart" set to true).
>>
>> - the second one providing the file saved from the first one.
>>
>> by periodically looping (through a timer) on the first server you may
>> implement a basic way to re-start the file each n minutes. More
>> elegant ways may involve a valve element and transitions to NULL
>> state/eos for the filesink element only.
>>
>> Regards
>>
>> >
>> > Best regards,
>> >
>> > - Zelalem S.
>> >
>> >
>> >
>> >
>> >> Date: Thu, 25 Nov 2010 13:39:37 +0200
>> >> From: [hidden email]
>> >> To: [hidden email]
>> >> Subject: Re: [gst-devel] How to create a video recording buffer from a
>> >> live broadcast and read from it at the same time
>> >>
>> >> Hi,
>> >>
>> >> On Wed, Nov 24, 2010 at 12:13 PM, Zelalem Sintayehu
>> >> <[hidden email]> wrote:
>> >> > Hi I want to create a program using gstreamer that when activated
>> >> > starts
>> >> > to
>> >> > record a live broadcast and when requested starts to deliver what is
>> >> > being
>> >> > recorded from the beginning of the record while keeping on recording
>> >> > on
>> >> > the
>> >> > other end (the live broadcast). At some point I want to ignore
>> >> > recording
>> >> > and
>> >> > go live. I hope gstreamer could be used to do this. Basically my
>> >> > problem
>> >> > is
>> >> > to create a buffer of a file that I can read and write into it at the
>> >> > same
>> >> > time. Please advice me how I can do this.
>> >>
>> >> Imo there are many ways for achieving this, some of which being easy,
>> >> other more difficult. The freedom you'll have in your design depends
>> >> on some variables:
>> >>
>> >> - You'll anyway have to use a signalling protocol (e.g. RTSP, SIP,
>> >> XMPP, etc..) to make it working, so you'll have to carefully pick the
>> >> one which better suits your requirements (e.g. RTSP is pretty well
>> >> supported from GStreamer from both sides, for SIP or XMPP I suggest
>> >> you to give a look to the telepathy framework).
>> >>
>> >> - Are you planning to make it compatible with standard clients? If
>> >> yes, which protocols do they use? If not, are you planning to write
>> >> the client application as well?
>> >>
>> >> - Do you have resource constraints (network bandwidth, CPU, disk,
>> >> memory)?
>> >>
>> >> - Is it possible that multiple clients will connect to the same server?
>> >>
>> >> If you can clarify the points of above it would be possible to give
>> >> you, in turn, an appropriate answer.
>> >>
>> >> Regards
>> >>
>> >> >
>> >> > Thank you.
>> >> >
>> >> > Best regards,
>> >> >
>> >> > - Zelalem S.
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > ------------------------------------------------------------------------------
>> >> > Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
>> >> > Tap into the largest installed PC base & get more eyes on your game
>> >> > by
>> >> > optimizing for Intel(R) Graphics Technology. Get started today with
>> >> > the
>> >> > Intel(R) Software Partner Program. Five $500 cash prizes are up for
>> >> > grabs.
>> >> > http://p.sf.net/sfu/intelisp-dev2dev
>> >> > _______________________________________________
>> >> > gstreamer-devel mailing list
>> >> > [hidden email]
>> >> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>> >> >
>> >> >
>> >>
>> >>
>> >>
>> >> ------------------------------------------------------------------------------
>> >> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
>> >> Tap into the largest installed PC base & get more eyes on your game by
>> >> optimizing for Intel(R) Graphics Technology. Get started today with the
>> >> Intel(R) Software Partner Program. Five $500 cash prizes are up for
>> >> grabs.
>> >> http://p.sf.net/sfu/intelisp-dev2dev
>> >> _______________________________________________
>> >> gstreamer-devel mailing list
>> >> [hidden email]
>> >> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>> >
>> >
>> > ------------------------------------------------------------------------------
>> > Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
>> > Tap into the largest installed PC base & get more eyes on your game by
>> > optimizing for Intel(R) Graphics Technology. Get started today with the
>> > Intel(R) Software Partner Program. Five $500 cash prizes are up for
>> > grabs.
>> > http://p.sf.net/sfu/intelisp-dev2dev
>> > _______________________________________________
>> > gstreamer-devel mailing list
>> > [hidden email]
>> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>> >
>> >
>>
>>
>> ------------------------------------------------------------------------------
>> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
>> Tap into the largest installed PC base & get more eyes on your game by
>> optimizing for Intel(R) Graphics Technology. Get started today with the
>> Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
>> http://p.sf.net/sfu/intelisp-dev2dev
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
> ------------------------------------------------------------------------------
> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> Tap into the largest installed PC base & get more eyes on your game by
> optimizing for Intel(R) Graphics Technology. Get started today with the
> Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
> http://p.sf.net/sfu/intelisp-dev2dev
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>

zelalem

Re: How to create a video recording buffer from a live broadcast and read from it at the same time

Dear Marco Ballesio thanks a lot for the comment. I'll try to do what you advised me. By the way, I have some expereince with gstreamer. I had written a code that captures and saves a video from a webcam into a file and also send it across the network. Another program I wrote was for videomail recorder. But this was last year. So I'll read the manual again for more info. I'll try and come back if i get a problem.

Once again thank you for the direction.

Best regards,

- Zelalem S.

> Date: Fri, 26 Nov 2010 12:33:09 +0200
> From: [hidden email]
> To: [hidden email]
> Subject: Re: [gst-devel] How to create a video recording buffer from a live broadcast and read from it at the same time
>
> Hi,
>
> a few pointers below, but I suggest you to anyway read the online
> documentation/check the sources to know something more.
>
> On Fri, Nov 26, 2010 at 11:40 AM, Zelalem Sintayehu
> <[hidden email]> wrote:
> > Hi Marco Ballesio thank you again for the support. Before I start to
> > implement your proposals, I want to ask you some questions. Let me respond
> > to your request first
> >> only. Do you have special requirements about using SIP in your AS
> >> media controller?
> > No, I don't have. I can use RTSP.
> >
> >> Wim's rtsp streaming server will probably help you with all of this:
> > Thank you. I'll download and check it.
> >
> > My questions are:
> > - Is it possible to read from a file that is being written by another
> > process? I mean the second server is going to read from teh file that the
> > first server is writing to.
>
> Yes it is and it *should* work as long as the consumer is not faster
> than the producer. What I don't exactly know is if the server
> connected to the camera will continue recording even when no rtsp
> clients are connected to it, but maybe you could give it a try.
>
> >
> >> by periodically looping (through a timer) on the first server you may
> >> implement a basic way to re-start the file each n minutes.
> >
> > Please clarify what you mean by restart the file.
>
> In GStreamer terms, going to NULL, and then to PLAYING again. Check
> the "Application development manual":
>
> http://www.gstreamer.net/data/doc/gstreamer/head/manual/html/index.html
>
> for more info.
>
> >
> >> More elegant ways may involve a valve element and transitions to NULL
> >> state/eos for the filesink element only.
> >
> > What will this (valve) element do?
>
> Here it is:
>
> http://www.gstreamer.net/data/doc/gstreamer/head/gst-plugins-bad-plugins/html/gst-plugins-bad-plugins-valve.html
>
> basically you can dynamically connect/disconnect elements to a
> pipeline when setting it to drop buffers. I'd suggest you to
> investigate on it only after you've maturised a basic knowledge about
> gstreamer.
>
> Regards
>
> >
> > Thank you.
> >
> > Best regards,
> >
> >
> > - Zelalem S.
> >
> >
> >> Date: Thu, 25 Nov 2010 19:59:05 +0200
> >> From: [hidden email]
> >> To: [hidden email]
> >> Subject: Re: [gst-devel] How to create a video recording buffer from a
> >> live broadcast and read from it at the same time
> >>
> >> Hi,
> >>
> >> On Thu, Nov 25, 2010 at 3:33 PM, Zelalem Sintayehu <[hidden email]>
> >> wrote:
> >> > Hi Dear Marco Ballesio thank you for your prompt response. I'm a student
> >> > and
> >> > want to do this as a project. Basically I want to have a kind of network
> >> > based recorder which is controlled by either SIP or RTSP from an
> >> > application
> >> > server. Those are the two protocols that I was thinking about to use.
> >> > Currently I have an RTSP proxy that I developed which is controlled by a
> >> > SIP
> >> > Application Server (AS) and delivers the media to a client. So I want to
> >> > extend it a little further so that when it is told to pause, it will
> >> > pause
> >> > the stream it gets from the server (which basically means recording it
> >> > for
> >> > later use) and again when told to resume starts the delivery from the
> >> > place
> >> > where it was paused. The client (a SIP) is just a passive media
> >> > reciever.
> >>
> >> in my understanding it should be possible to do all of this with RTSP
> >> only. Do you have special requirements about using SIP in your AS
> >> media controller?
> >>
> >> > the media control comes from the application server. I also want to use
> >> > a
> >> > client with basic RTSP capability but still the media control comes from
> >> > the
> >> > AS or media controller. With regard to bandwith limitation I don't have
> >> > badndwidth costraints, but I'm thinking that the recorder should have a
> >> > limited (specified) buffer size. It can't go on recording forever. I
> >> > also
> >> > only want this to work for one client. Hope I have attended your
> >> > queries.
> >> >
> >> > Once again thank you for your support.
> >>
> >> A few ideas. Disclaimer: I've not personally tried them, so your
> >> mileage to get the thing working may vary..
> >>
> >> Wim's rtsp streaming server will probably help you with all of this:
> >>
> >> http://people.freedesktop.org/~wtay/
> >>
> >> in my understanding, you would need to setup two servers:
> >>
> >> - the first one streaming from the camera AND locally saving to file
> >> (through, between the others, a tee element and an mp4mux with the
> >> option "faststart" set to true).
> >>
> >> - the second one providing the file saved from the first one.
> >>
> >> by periodically looping (through a timer) on the first server you may
> >> implement a basic way to re-start the file each n minutes. More
> >> elegant ways may involve a valve element and transitions to NULL
> >> state/eos for the filesink element only.
> >>
> >> Regards
> >>
> >> >
> >> > Best regards,
> >> >
> >> > - Zelalem S.
> >> >
> >> >
> >> >
> >> >
> >> >> Date: Thu, 25 Nov 2010 13:39:37 +0200
> >> >> From: [hidden email]
> >> >> To: [hidden email]
> >> >> Subject: Re: [gst-devel] How to create a video recording buffer from a
> >> >> live broadcast and read from it at the same time
> >> >>
> >> >> Hi,
> >> >>
> >> >> On Wed, Nov 24, 2010 at 12:13 PM, Zelalem Sintayehu
> >> >> <[hidden email]> wrote:
> >> >> > Hi I want to create a program using gstreamer that when activated
> >> >> > starts
> >> >> > to
> >> >> > record a live broadcast and when requested starts to deliver what is
> >> >> > being
> >> >> > recorded from the beginning of the record while keeping on recording
> >> >> > on
> >> >> > the
> >> >> > other end (the live broadcast). At some point I want to ignore
> >> >> > recording
> >> >> > and
> >> >> > go live. I hope gstreamer could be used to do this. Basically my
> >> >> > problem
> >> >> > is
> >> >> > to create a buffer of a file that I can read and write into it at the
> >> >> > same
> >> >> > time. Please advice me how I can do this.
> >> >>
> >> >> Imo there are many ways for achieving this, some of which being easy,
> >> >> other more difficult. The freedom you'll have in your design depends
> >> >> on some variables:
> >> >>
> >> >> - You'll anyway have to use a signalling protocol (e.g. RTSP, SIP,
> >> >> XMPP, etc..) to make it working, so you'll have to carefully pick the
> >> >> one which better suits your requirements (e.g. RTSP is pretty well
> >> >> supported from GStreamer from both sides, for SIP or XMPP I suggest
> >> >> you to give a look to the telepathy framework).
> >> >>
> >> >> - Are you planning to make it compatible with standard clients? If
> >> >> yes, which protocols do they use? If not, are you planning to write
> >> >> the client application as well?
> >> >>
> >> >> - Do you have resource constraints (network bandwidth, CPU, disk,
> >> >> memory)?
> >> >>
> >> >> - Is it possible that multiple clients will connect to the same server?
> >> >>
> >> >> If you can clarify the points of above it would be possible to give
> >> >> you, in turn, an appropriate answer.
> >> >>
> >> >> Regards
> >> >>
> >> >> >
> >> >> > Thank you.
> >> >> >
> >> >> > Best regards,
> >> >> >
> >> >> > - Zelalem S.
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> >> >> > ------------------------------------------------------------------------------
> >> >> > Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> >> >> > Tap into the largest installed PC base & get more eyes on your game
> >> >> > by
> >> >> > optimizing for Intel(R) Graphics Technology. Get started today with
> >> >> > the
> >> >> > Intel(R) Software Partner Program. Five $500 cash prizes are up for
> >> >> > grabs.
> >> >> > http://p.sf.net/sfu/intelisp-dev2dev
> >> >> > _______________________________________________
> >> >> > gstreamer-devel mailing list
> >> >> > [hidden email]
> >> >> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >> >> >
> >> >> >
> >> >>
> >> >>
> >> >>
> >> >> ------------------------------------------------------------------------------
> >> >> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> >> >> Tap into the largest installed PC base & get more eyes on your game by
> >> >> optimizing for Intel(R) Graphics Technology. Get started today with the
> >> >> Intel(R) Software Partner Program. Five $500 cash prizes are up for
> >> >> grabs.
> >> >> http://p.sf.net/sfu/intelisp-dev2dev
> >> >> _______________________________________________
> >> >> gstreamer-devel mailing list
> >> >> [hidden email]
> >> >> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >> >
> >> >
> >> > ------------------------------------------------------------------------------
> >> > Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> >> > Tap into the largest installed PC base & get more eyes on your game by
> >> > optimizing for Intel(R) Graphics Technology. Get started today with the
> >> > Intel(R) Software Partner Program. Five $500 cash prizes are up for
> >> > grabs.
> >> > http://p.sf.net/sfu/intelisp-dev2dev
> >> > _______________________________________________
> >> > gstreamer-devel mailing list
> >> > [hidden email]
> >> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >> >
> >> >
> >>
> >>
> >> ------------------------------------------------------------------------------
> >> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> >> Tap into the largest installed PC base & get more eyes on your game by
> >> optimizing for Intel(R) Graphics Technology. Get started today with the
> >> Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
> >> http://p.sf.net/sfu/intelisp-dev2dev
> >> _______________________________________________
> >> gstreamer-devel mailing list
> >> [hidden email]
> >> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> > ------------------------------------------------------------------------------
> > Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> > Tap into the largest installed PC base & get more eyes on your game by
> > optimizing for Intel(R) Graphics Technology. Get started today with the
> > Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
> > http://p.sf.net/sfu/intelisp-dev2dev
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
>
> ------------------------------------------------------------------------------
> Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
> Tap into the largest installed PC base & get more eyes on your game by
> optimizing for Intel(R) Graphics Technology. Get started today with the
> Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
> http://p.sf.net/sfu/intelisp-dev2dev
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel