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Problem with udpsrc in gst-rtsp-server

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morrisford

Problem with udpsrc in gst-rtsp-server

I am working on receiving an udpsrc stream and publishing it as an rtsp stream. This gst-launch string works just fine to receive the stream:

gst-launch-0.10 -v udpsrc port=5000 caps="application/x-rtp, media=\(string\)video, clock-rate=\(int\)90000, encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661, clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" ! rtph264depay ! decodebin ! ffmpegcolorspace ! videoscale ! xvimagesink sync=false

but when I try to take that pipeline and put it into a test-launch, I get complaints about not being able to set the caps on udpsrc to application/x-rtp.

Like this:

./test-launch "( udpsrc port=5000 caps="application/x-rtp, media=\(string\)video, clock-rate=\(int\)90000, encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661, clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" ! rtph264depay ! decodebin ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay name-pay0 pt=96 )"

** (lt-test-launch:20772): CRITICAL **: could not parse launch syntax (( udpsrc port=5000 caps=application/x-rtp,): could not set property "caps" in element "udpsrc0" to "application/x-rtp,"

** (lt-test-launch:20772): CRITICAL **: could not create element

I could not find any examples of udpsrc in a test-launch line or udpsrc in a gst-rtsp-server 'c' program so I am not at all sure if what I am trying to do is valid.

Morris

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Marco Ballesio

Re: Problem with udpsrc in gst-rtsp-server

Hi,

On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford <[hidden email]> wrote:

> I am working on receiving an udpsrc stream and publishing it as an rtsp
> stream. This gst-launch string works just fine to receive the stream:
> gst-launch-0.10 -v udpsrc port=5000 caps="application/x-rtp,
> media=\(string\)video, clock-rate=\(int\)90000,
> encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661,
> clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" ! rtph264depay !
> decodebin ! ffmpegcolorspace ! videoscale ! xvimagesink sync=false
> but when I try to take that pipeline and put it into a test-launch, I get
> complaints about not being able to set the caps on udpsrc to
> application/x-rtp.
> Like this:
> ./test-launch "( udpsrc port=5000 caps="application/x-rtp,
> media=\(string\)video, clock-rate=\(int\)90000,

It's just about bash syntax. The way you're using the " make bash
thinking you're passing test-launch a first argument like this:

( udpsrc port=5000 caps=

concatenated to:

application/x-rtp,

and a second argument like:

media=\(string\)video,

useless to say this is not what you should pass to the test-launch
command. I suggest you to try replacing the outmost pair of " with '
or the innermost ones with \"

Regards

> encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661,
> clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" ! rtph264depay !
> decodebin ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay name-pay0
> pt=96 )"
> ** (lt-test-launch:20772): CRITICAL **: could not parse launch syntax ((
> udpsrc port=5000 caps=application/x-rtp,): could not set property "caps" in
> element "udpsrc0" to "application/x-rtp,"
> ** (lt-test-launch:20772): CRITICAL **: could not create element
> I could not find any examples of udpsrc in a test-launch line or udpsrc in a
> gst-rtsp-server 'c' program so I am not at all sure if what I am trying to
> do is valid.
> Morris
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>

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morrisford

Re: Problem with udpsrc in gst-rtsp-server

Thanks a lot for your help. That was the key to getting it to run. I now have a working rtsp-server pipe thus:

./test-launch "( udpsrc port=5000 caps=\"application/x-rtp, media=\(string\)video, clock-rate=\(int\)90000, encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661, clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439\" ! rtph264depay ! ffdec_h264 ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay name=pay0 pt=96 sync=false )"

Problem now is that there is a 3 - 4 second latency when playing using that pipeline and playing the resulting video through vlc or quicktime.

My question: How do I find what is causing the delay and what can I do to reduce the delay?

Thanks

Morris

On Mon, Feb 28, 2011 at 2:33 AM, Marco Ballesio <[hidden email]> wrote:

Hi,

On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford <[hidden email]> wrote:
> I am working on receiving an udpsrc stream and publishing it as an rtsp
> stream. This gst-launch string works just fine to receive the stream:
> gst-launch-0.10 -v udpsrc port=5000 caps="application/x-rtp,
> media=\(string\)video, clock-rate=\(int\)90000,
> encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661,
> clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" ! rtph264depay !
> decodebin ! ffmpegcolorspace ! videoscale ! xvimagesink sync=false
> but when I try to take that pipeline and put it into a test-launch, I get
> complaints about not being able to set the caps on udpsrc to
> application/x-rtp.
> Like this:
> ./test-launch "( udpsrc port=5000 caps="application/x-rtp,
> media=\(string\)video, clock-rate=\(int\)90000,

It's just about bash syntax. The way you're using the " make bash
thinking you're passing test-launch a first argument like this:

( udpsrc port=5000 caps=

concatenated to:

application/x-rtp,

and a second argument like:

media=\(string\)video,

useless to say this is not what you should pass to the test-launch
command. I suggest you to try replacing the outmost pair of " with '
or the innermost ones with \"

Regards

> encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661,
> clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" ! rtph264depay !
> decodebin ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay name-pay0
> pt=96 )"
> ** (lt-test-launch:20772): CRITICAL **: could not parse launch syntax ((
> udpsrc port=5000 caps=application/x-rtp,): could not set property "caps" in
> element "udpsrc0" to "application/x-rtp,"
> ** (lt-test-launch:20772): CRITICAL **: could not create element
> I could not find any examples of udpsrc in a test-launch line or udpsrc in a
> gst-rtsp-server 'c' program so I am not at all sure if what I am trying to
> do is valid.
> Morris

> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
_______________________________________________
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[hidden email]
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

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Mailing List SVR

Re: Problem with udpsrc in gst-rtsp-server

Il giorno lun, 28/02/2011 alle 11.14 -0500, Morris Ford ha scritto:

> Thanks a lot for your help. That was the key to getting it to run. I
> now have a working rtsp-server pipe thus:
>
>
> ./test-launch "( udpsrc port=5000 caps=\"application/x-rtp, media=
> \(string\)video, clock-rate=\(int\)90000, encoding-name=\(string
> \)H264, payload=\(int\)96, ssrc=\(guint\)2396357661, clock-base=
> \(guint\)2297066863, seqnum-base=\(guint\)49439\" ! rtph264depay !
> ffdec_h264 ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay
> name=pay0 pt=96 sync=false )"
>

try removing the reencoding part "ffdec_h264 ! ffmpegcolorspace !
videoscale ! x264enc !"

>
> Problem now is that there is a 3 - 4 second latency when playing using
> that pipeline and playing the resulting video through vlc or
> quicktime.

in vlc use --rtsp-caching=100

>
>
> My question: How do I find what is causing the delay and what can I do
> to reduce the delay?
>
>
> Thanks
> Morris
>
> On Mon, Feb 28, 2011 at 2:33 AM, Marco Ballesio <[hidden email]>
> wrote:
> Hi,
>
> On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford
> <[hidden email]> wrote:
> > I am working on receiving an udpsrc stream and publishing it
> as an rtsp
> > stream. This gst-launch string works just fine to receive
> the stream:
> > gst-launch-0.10 -v udpsrc port=5000 caps="application/x-rtp,
> > media=\(string\)video, clock-rate=\(int\)90000,
> > encoding-name=\(string\)H264, payload=\(int\)96, ssrc=
> \(guint\)2396357661,
> > clock-base=\(guint\)2297066863, seqnum-base=\(guint
> \)49439" ! rtph264depay !
> > decodebin ! ffmpegcolorspace ! videoscale ! xvimagesink
> sync=false
> > but when I try to take that pipeline and put it into a
> test-launch, I get
> > complaints about not being able to set the caps on udpsrc to
> > application/x-rtp.
> > Like this:
> > ./test-launch "( udpsrc port=5000 caps="application/x-rtp,
> > media=\(string\)video, clock-rate=\(int\)90000,
>
>
> It's just about bash syntax. The way you're using the " make
> bash
> thinking you're passing test-launch a first argument like
> this:
>
> ( udpsrc port=5000 caps=
>
> concatenated to:
>
> application/x-rtp,
>
> and a second argument like:
>
> media=\(string\)video,
>
> useless to say this is not what you should pass to the
> test-launch
> command. I suggest you to try replacing the outmost pair of "
> with '
> or the innermost ones with \"
>
> Regards
>
> > encoding-name=\(string\)H264, payload=\(int\)96, ssrc=
> \(guint\)2396357661,
> > clock-base=\(guint\)2297066863, seqnum-base=\(guint
> \)49439" ! rtph264depay !
> > decodebin ! ffmpegcolorspace ! videoscale ! x264enc !
> rtph264pay name-pay0
> > pt=96 )"
> > ** (lt-test-launch:20772): CRITICAL **: could not parse
> launch syntax ((
> > udpsrc port=5000 caps=application/x-rtp,): could not set
> property "caps" in
> > element "udpsrc0" to "application/x-rtp,"
> > ** (lt-test-launch:20772): CRITICAL **: could not create
> element
> > I could not find any examples of udpsrc in a test-launch
> line or udpsrc in a
> > gst-rtsp-server 'c' program so I am not at all sure if what
> I am trying to
> > do is valid.
> > Morris
>
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> >
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >
> >
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
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[hidden email]
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morrisford

Re: Problem with udpsrc in gst-rtsp-server

I tried various combinations - this one runs but does not change latency (w/o ffmpegcolorspace ! videoscale):

This one won't run (w/o the whole decode/encode sequence):

** (lt-test-launch:4413): WARNING **: ignoring stream 0 without media type

I suppose I need some caps or something between the depay and pay.

Morris

On Mon, Feb 28, 2011 at 11:42 AM, Mailing List SVR <[hidden email]> wrote:

Il giorno lun, 28/02/2011 alle 11.14 -0500, Morris Ford ha scritto:

> Thanks a lot for your help. That was the key to getting it to run. I
> now have a working rtsp-server pipe thus:
>
>
> ./test-launch "( udpsrc port=5000 caps=\"application/x-rtp, media=
> \(string\)video, clock-rate=\(int\)90000, encoding-name=\(string
> \)H264, payload=\(int\)96, ssrc=\(guint\)2396357661, clock-base=
> \(guint\)2297066863, seqnum-base=\(guint\)49439\" ! rtph264depay !
> ffdec_h264 ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay
> name=pay0 pt=96 sync=false )"
>

try removing the reencoding part "ffdec_h264 ! ffmpegcolorspace !
videoscale ! x264enc !"

>

> Problem now is that there is a 3 - 4 second latency when playing using
> that pipeline and playing the resulting video through vlc or
> quicktime.

in vlc use --rtsp-caching=100

>
>
> My question: How do I find what is causing the delay and what can I do
> to reduce the delay?
>
>
> Thanks
> Morris
>
> On Mon, Feb 28, 2011 at 2:33 AM, Marco Ballesio <[hidden email]>
> wrote:
> Hi,
>
> On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford
> <[hidden email]> wrote:
> > I am working on receiving an udpsrc stream and publishing it
> as an rtsp
> > stream. This gst-launch string works just fine to receive
> the stream:
> > gst-launch-0.10 -v udpsrc port=5000 caps="application/x-rtp,
> > media=\(string\)video, clock-rate=\(int\)90000,
> > encoding-name=\(string\)H264, payload=\(int\)96, ssrc=
> \(guint\)2396357661,
> > clock-base=\(guint\)2297066863, seqnum-base=\(guint
> \)49439" ! rtph264depay !
> > decodebin ! ffmpegcolorspace ! videoscale ! xvimagesink
> sync=false
> > but when I try to take that pipeline and put it into a
> test-launch, I get
> > complaints about not being able to set the caps on udpsrc to
> > application/x-rtp.
> > Like this:
> > ./test-launch "( udpsrc port=5000 caps="application/x-rtp,
> > media=\(string\)video, clock-rate=\(int\)90000,
>
>
> It's just about bash syntax. The way you're using the " make
> bash
> thinking you're passing test-launch a first argument like
> this:
>
> ( udpsrc port=5000 caps=
>
> concatenated to:
>
> application/x-rtp,
>
> and a second argument like:
>
> media=\(string\)video,
>
> useless to say this is not what you should pass to the
> test-launch
> command. I suggest you to try replacing the outmost pair of "
> with '
> or the innermost ones with \"
>
> Regards
>
> > encoding-name=\(string\)H264, payload=\(int\)96, ssrc=
> \(guint\)2396357661,
> > clock-base=\(guint\)2297066863, seqnum-base=\(guint
> \)49439" ! rtph264depay !
> > decodebin ! ffmpegcolorspace ! videoscale ! x264enc !
> rtph264pay name-pay0
> > pt=96 )"
> > ** (lt-test-launch:20772): CRITICAL **: could not parse
> launch syntax ((
> > udpsrc port=5000 caps=application/x-rtp,): could not set
> property "caps" in
> > element "udpsrc0" to "application/x-rtp,"
> > ** (lt-test-launch:20772): CRITICAL **: could not create
> element
> > I could not find any examples of udpsrc in a test-launch
> line or udpsrc in a
> > gst-rtsp-server 'c' program so I am not at all sure if what
> I am trying to
> > do is valid.
> > Morris
>
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> >
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >
> >
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
gstreamer-devel mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
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Marco Ballesio

Re: Problem with udpsrc in gst-rtsp-server

In reply to this post by morrisford

Hi,

On Mon, Feb 28, 2011 at 6:14 PM, Morris Ford <[hidden email]> wrote:

> Thanks a lot for your help. That was the key to getting it to run. I now
> have a working rtsp-server pipe thus:
> ./test-launch "( udpsrc port=5000 caps=\"application/x-rtp,
> media=\(string\)video, clock-rate=\(int\)90000,
> encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661,
> clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439\" ! rtph264depay
> ! ffdec_h264 ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay
> name=pay0 pt=96 sync=false )"
> Problem now is that there is a 3 - 4 second latency when playing using that
> pipeline and playing the resulting video through vlc or quicktime.
> My question: How do I find what is causing the delay and what can I do to
> reduce the delay?

what if you don't explicitly set clock-base and seqnum-base?

Regards

> Thanks
> Morris
>
> On Mon, Feb 28, 2011 at 2:33 AM, Marco Ballesio <[hidden email]>
> wrote:
>>
>> Hi,
>>
>> On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford <[hidden email]>
>> wrote:
>> > I am working on receiving an udpsrc stream and publishing it as an rtsp
>> > stream. This gst-launch string works just fine to receive the stream:
>> > gst-launch-0.10 -v udpsrc port=5000 caps="application/x-rtp,
>> > media=\(string\)video, clock-rate=\(int\)90000,
>> > encoding-name=\(string\)H264, payload=\(int\)96,
>> > ssrc=\(guint\)2396357661,
>> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" !
>> > rtph264depay !
>> > decodebin ! ffmpegcolorspace ! videoscale ! xvimagesink sync=false
>> > but when I try to take that pipeline and put it into a test-launch, I
>> > get
>> > complaints about not being able to set the caps on udpsrc to
>> > application/x-rtp.
>> > Like this:
>> > ./test-launch "( udpsrc port=5000 caps="application/x-rtp,
>> > media=\(string\)video, clock-rate=\(int\)90000,
>>
>> It's just about bash syntax. The way you're using the " make bash
>> thinking you're passing test-launch a first argument like this:
>>
>> ( udpsrc port=5000 caps=
>>
>> concatenated to:
>>
>> application/x-rtp,
>>
>> and a second argument like:
>>
>> media=\(string\)video,
>>
>> useless to say this is not what you should pass to the test-launch
>> command. I suggest you to try replacing the outmost pair of " with '
>> or the innermost ones with \"
>>
>> Regards
>>
>> > encoding-name=\(string\)H264, payload=\(int\)96,
>> > ssrc=\(guint\)2396357661,
>> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" !
>> > rtph264depay !
>> > decodebin ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay
>> > name-pay0
>> > pt=96 )"
>> > ** (lt-test-launch:20772): CRITICAL **: could not parse launch syntax ((
>> > udpsrc port=5000 caps=application/x-rtp,): could not set property "caps"
>> > in
>> > element "udpsrc0" to "application/x-rtp,"
>> > ** (lt-test-launch:20772): CRITICAL **: could not create element
>> > I could not find any examples of udpsrc in a test-launch line or udpsrc
>> > in a
>> > gst-rtsp-server 'c' program so I am not at all sure if what I am trying
>> > to
>> > do is valid.
>> > Morris
>> > _______________________________________________
>> > gstreamer-devel mailing list
>> > [hidden email]
>> > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>> >
>> >
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>

_______________________________________________
gstreamer-devel mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

morrisford

Re: Problem with udpsrc in gst-rtsp-server

I get:

(lt-test-launch:21084): GStreamer-CRITICAL **: gst_poll_set_flushing: assertion `set != NULL' failed

Morris

On Tue, Mar 1, 2011 at 3:11 AM, Marco Ballesio <[hidden email]> wrote:

Hi,

On Mon, Feb 28, 2011 at 6:14 PM, Morris Ford <[hidden email]> wrote:
> Thanks a lot for your help. That was the key to getting it to run. I now
> have a working rtsp-server pipe thus:
> ./test-launch "( udpsrc port=5000 caps=\"application/x-rtp,
> media=\(string\)video, clock-rate=\(int\)90000,
> encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661,
> clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439\" ! rtph264depay
> ! ffdec_h264 ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay
> name=pay0 pt=96 sync=false )"
> Problem now is that there is a 3 - 4 second latency when playing using that
> pipeline and playing the resulting video through vlc or quicktime.
> My question: How do I find what is causing the delay and what can I do to
> reduce the delay?

what if you don't explicitly set clock-base and seqnum-base?

Regards

> Thanks
> Morris
>
> On Mon, Feb 28, 2011 at 2:33 AM, Marco Ballesio <[hidden email]>
> wrote:
>>
>> Hi,
>>
>> On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford <[hidden email]>
>> wrote:
>> > I am working on receiving an udpsrc stream and publishing it as an rtsp
>> > stream. This gst-launch string works just fine to receive the stream:
>> > gst-launch-0.10 -v udpsrc port=5000 caps="application/x-rtp,
>> > media=\(string\)video, clock-rate=\(int\)90000,
>> > encoding-name=\(string\)H264, payload=\(int\)96,
>> > ssrc=\(guint\)2396357661,
>> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" !
>> > rtph264depay !
>> > decodebin ! ffmpegcolorspace ! videoscale ! xvimagesink sync=false
>> > but when I try to take that pipeline and put it into a test-launch, I
>> > get
>> > complaints about not being able to set the caps on udpsrc to
>> > application/x-rtp.
>> > Like this:
>> > ./test-launch "( udpsrc port=5000 caps="application/x-rtp,
>> > media=\(string\)video, clock-rate=\(int\)90000,
>>
>> It's just about bash syntax. The way you're using the " make bash
>> thinking you're passing test-launch a first argument like this:
>>
>> ( udpsrc port=5000 caps=
>>
>> concatenated to:
>>
>> application/x-rtp,
>>
>> and a second argument like:
>>
>> media=\(string\)video,
>>
>> useless to say this is not what you should pass to the test-launch
>> command. I suggest you to try replacing the outmost pair of " with '
>> or the innermost ones with \"
>>
>> Regards
>>
>> > encoding-name=\(string\)H264, payload=\(int\)96,
>> > ssrc=\(guint\)2396357661,
>> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" !
>> > rtph264depay !
>> > decodebin ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay
>> > name-pay0
>> > pt=96 )"
>> > ** (lt-test-launch:20772): CRITICAL **: could not parse launch syntax ((
>> > udpsrc port=5000 caps=application/x-rtp,): could not set property "caps"
>> > in
>> > element "udpsrc0" to "application/x-rtp,"
>> > ** (lt-test-launch:20772): CRITICAL **: could not create element
>> > I could not find any examples of udpsrc in a test-launch line or udpsrc
>> > in a
>> > gst-rtsp-server 'c' program so I am not at all sure if what I am trying
>> > to
>> > do is valid.
>> > Morris
>> > _______________________________________________
>> > gstreamer-devel mailing list
>> > [hidden email]
>> > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>> >
>> >
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
_______________________________________________
gstreamer-devel mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
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morrisford

Re: Problem with udpsrc in gst-rtsp-server

This morning I cranked up my test and I was seeing about 10 second latency. After rebooting all the systems involved I am still seeing about 7 - 8 second latency. This is really strange.

Any insight?

Morris

On Tue, Mar 1, 2011 at 8:24 AM, Morris Ford <[hidden email]> wrote:

I get:
(lt-test-launch:21084): GStreamer-CRITICAL **: gst_poll_set_flushing: assertion `set != NULL' failed

Morris

On Tue, Mar 1, 2011 at 3:11 AM, Marco Ballesio <[hidden email]> wrote:

Hi,

On Mon, Feb 28, 2011 at 6:14 PM, Morris Ford <[hidden email]> wrote:
> Thanks a lot for your help. That was the key to getting it to run. I now
> have a working rtsp-server pipe thus:
> ./test-launch "( udpsrc port=5000 caps=\"application/x-rtp,
> media=\(string\)video, clock-rate=\(int\)90000,
> encoding-name=\(string\)H264, payload=\(int\)96, ssrc=\(guint\)2396357661,
> clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439\" ! rtph264depay
> ! ffdec_h264 ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay
> name=pay0 pt=96 sync=false )"
> Problem now is that there is a 3 - 4 second latency when playing using that
> pipeline and playing the resulting video through vlc or quicktime.
> My question: How do I find what is causing the delay and what can I do to
> reduce the delay?

what if you don't explicitly set clock-base and seqnum-base?

Regards

> Thanks
> Morris
>
> On Mon, Feb 28, 2011 at 2:33 AM, Marco Ballesio <[hidden email]>
> wrote:
>>
>> Hi,
>>
>> On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford <[hidden email]>
>> wrote:
>> > I am working on receiving an udpsrc stream and publishing it as an rtsp
>> > stream. This gst-launch string works just fine to receive the stream:
>> > gst-launch-0.10 -v udpsrc port=5000 caps="application/x-rtp,
>> > media=\(string\)video, clock-rate=\(int\)90000,
>> > encoding-name=\(string\)H264, payload=\(int\)96,
>> > ssrc=\(guint\)2396357661,
>> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" !
>> > rtph264depay !
>> > decodebin ! ffmpegcolorspace ! videoscale ! xvimagesink sync=false
>> > but when I try to take that pipeline and put it into a test-launch, I
>> > get
>> > complaints about not being able to set the caps on udpsrc to
>> > application/x-rtp.
>> > Like this:
>> > ./test-launch "( udpsrc port=5000 caps="application/x-rtp,
>> > media=\(string\)video, clock-rate=\(int\)90000,
>>
>> It's just about bash syntax. The way you're using the " make bash
>> thinking you're passing test-launch a first argument like this:
>>
>> ( udpsrc port=5000 caps=
>>
>> concatenated to:
>>
>> application/x-rtp,
>>
>> and a second argument like:
>>
>> media=\(string\)video,
>>
>> useless to say this is not what you should pass to the test-launch
>> command. I suggest you to try replacing the outmost pair of " with '
>> or the innermost ones with \"
>>
>> Regards
>>
>> > encoding-name=\(string\)H264, payload=\(int\)96,
>> > ssrc=\(guint\)2396357661,
>> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" !
>> > rtph264depay !
>> > decodebin ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay
>> > name-pay0
>> > pt=96 )"
>> > ** (lt-test-launch:20772): CRITICAL **: could not parse launch syntax ((
>> > udpsrc port=5000 caps=application/x-rtp,): could not set property "caps"
>> > in
>> > element "udpsrc0" to "application/x-rtp,"
>> > ** (lt-test-launch:20772): CRITICAL **: could not create element
>> > I could not find any examples of udpsrc in a test-launch line or udpsrc
>> > in a
>> > gst-rtsp-server 'c' program so I am not at all sure if what I am trying
>> > to
>> > do is valid.
>> > Morris
>> > _______________________________________________
>> > gstreamer-devel mailing list
>> > [hidden email]
>> > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>> >
>> >
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
_______________________________________________
gstreamer-devel mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
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[hidden email]
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Tim-Philipp Müller-2

Re: Problem with udpsrc in gst-rtsp-server (latency)

On Tue, 2011-03-01 at 08:43 -0500, Morris Ford wrote:
> This morning I cranked up my test and I was seeing about 10 second
> latency. After rebooting all the systems involved I am still seeing
> about 7 - 8 second latency. This is really strange.
>
> Any insight?

Try: x264enc tune=zerolatency

Cheers
-Tim

>
> Morris
>
> On Tue, Mar 1, 2011 at 8:24 AM, Morris Ford <[hidden email]>
> wrote:
> I get:
> (lt-test-launch:21084): GStreamer-CRITICAL **:
> gst_poll_set_flushing: assertion `set != NULL' failed
>
>
> Morris
>
>
> On Tue, Mar 1, 2011 at 3:11 AM, Marco Ballesio
> <[hidden email]> wrote:
> Hi,
>
> On Mon, Feb 28, 2011 at 6:14 PM, Morris Ford
> <[hidden email]> wrote:
> > Thanks a lot for your help. That was the key to
> getting it to run. I now
> > have a working rtsp-server pipe thus:
> > ./test-launch "( udpsrc port=5000 caps=
> \"application/x-rtp,
> > media=\(string\)video, clock-rate=\(int\)90000,
> > encoding-name=\(string\)H264, payload=\(int\)96,
> ssrc=\(guint\)2396357661,
> > clock-base=\(guint\)2297066863, seqnum-base=\(guint
> \)49439\" ! rtph264depay
> > ! ffdec_h264 ! ffmpegcolorspace ! videoscale !
> x264enc ! rtph264pay
> > name=pay0 pt=96 sync=false )"
> > Problem now is that there is a 3 - 4 second latency
> when playing using that
> > pipeline and playing the resulting video through vlc
> or quicktime.
> > My question: How do I find what is causing the delay
> and what can I do to
> > reduce the delay?
>
>
> what if you don't explicitly set clock-base and
> seqnum-base?
>
> Regards
>
>
> > Thanks
> > Morris
> >
> > On Mon, Feb 28, 2011 at 2:33 AM, Marco Ballesio
> <[hidden email]>
> > wrote:
> >>
> >> Hi,
> >>
> >> On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford
> <[hidden email]>
> >> wrote:
> >> > I am working on receiving an udpsrc stream and
> publishing it as an rtsp
> >> > stream. This gst-launch string works just fine to
> receive the stream:
> >> > gst-launch-0.10 -v udpsrc port=5000
> caps="application/x-rtp,
> >> > media=\(string\)video, clock-rate=\(int\)90000,
> >> > encoding-name=\(string\)H264, payload=\(int\)96,
> >> > ssrc=\(guint\)2396357661,
> >> > clock-base=\(guint\)2297066863, seqnum-base=
> \(guint\)49439" !
> >> > rtph264depay !
> >> > decodebin ! ffmpegcolorspace ! videoscale !
> xvimagesink sync=false
> >> > but when I try to take that pipeline and put it
> into a test-launch, I
> >> > get
> >> > complaints about not being able to set the caps
> on udpsrc to
> >> > application/x-rtp.
> >> > Like this:
> >> > ./test-launch "( udpsrc port=5000
> caps="application/x-rtp,
> >> > media=\(string\)video, clock-rate=\(int\)90000,
> >>
> >> It's just about bash syntax. The way you're using
> the " make bash
> >> thinking you're passing test-launch a first
> argument like this:
> >>
> >> ( udpsrc port=5000 caps=
> >>
> >> concatenated to:
> >>
> >> application/x-rtp,
> >>
> >> and a second argument like:
> >>
> >> media=\(string\)video,
> >>
> >> useless to say this is not what you should pass to
> the test-launch
> >> command. I suggest you to try replacing the outmost
> pair of " with '
> >> or the innermost ones with \"
> >>
> >> Regards
> >>
> >> > encoding-name=\(string\)H264, payload=\(int\)96,
> >> > ssrc=\(guint\)2396357661,
> >> > clock-base=\(guint\)2297066863, seqnum-base=
> \(guint\)49439" !
> >> > rtph264depay !
> >> > decodebin ! ffmpegcolorspace ! videoscale !
> x264enc ! rtph264pay
> >> > name-pay0
> >> > pt=96 )"
> >> > ** (lt-test-launch:20772): CRITICAL **: could not
> parse launch syntax ((
> >> > udpsrc port=5000 caps=application/x-rtp,): could
> not set property "caps"
> >> > in
> >> > element "udpsrc0" to "application/x-rtp,"
> >> > ** (lt-test-launch:20772): CRITICAL **: could not
> create element
> >> > I could not find any examples of udpsrc in a
> test-launch line or udpsrc
> >> > in a
> >> > gst-rtsp-server 'c' program so I am not at all
> sure if what I am trying
> >> > to
> >> > do is valid.
> >> > Morris
> >> > _______________________________________________
> >> > gstreamer-devel mailing list
> >> > [hidden email]
> >> >
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >> >
> >> >
> >> _______________________________________________
> >> gstreamer-devel mailing list
> >> [hidden email]
> >>
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >
> >
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> >
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >
> >
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
>
>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
gstreamer-devel mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

morrisford

Re: Problem with udpsrc in gst-rtsp-server (latency)

Doing x264enc tune=zerolatency made the video quite pixelated but really didn't affect the latency.

A brief explanation of what I am doing:

I am using AppSrc from gstreamer-java to grab rgb buffers from a large java app and putting them out as x264enc / rtph264pay / udpsink. That is the stream I am picking up with the test-launch pipeline I am working on. I can attach a gst-launch pipeline to the AppSrc output and display with very low latency so the delay is in the test-launch pipeline. I just reduced the size of the captured buffers in the AppSrc interface from 640x480 to 320x240 with improved latency so it appears that the amount of data in the pipeline is important. I have checked cpu usage everwhere with nothing showing over about 3 -5 % usage. All the involved computers are connected by gigabit connections.

Morris

On Tue, Mar 1, 2011 at 9:00 AM, Tim-Philipp Müller <[hidden email]> wrote:

On Tue, 2011-03-01 at 08:43 -0500, Morris Ford wrote:
> This morning I cranked up my test and I was seeing about 10 second
> latency. After rebooting all the systems involved I am still seeing
> about 7 - 8 second latency. This is really strange.
>
> Any insight?

Try: x264enc tune=zerolatency

Cheers
-Tim
>
> Morris
>
> On Tue, Mar 1, 2011 at 8:24 AM, Morris Ford <[hidden email]>
> wrote:
> I get:
> (lt-test-launch:21084): GStreamer-CRITICAL **:
> gst_poll_set_flushing: assertion `set != NULL' failed
>
>
> Morris
>
>
> On Tue, Mar 1, 2011 at 3:11 AM, Marco Ballesio
> <[hidden email]> wrote:
> Hi,
>
> On Mon, Feb 28, 2011 at 6:14 PM, Morris Ford
> <[hidden email]> wrote:
> > Thanks a lot for your help. That was the key to
> getting it to run. I now
> > have a working rtsp-server pipe thus:
> > ./test-launch "( udpsrc port=5000 caps=
> \"application/x-rtp,
> > media=\(string\)video, clock-rate=\(int\)90000,
> > encoding-name=\(string\)H264, payload=\(int\)96,
> ssrc=\(guint\)2396357661,
> > clock-base=\(guint\)2297066863, seqnum-base=\(guint
> \)49439\" ! rtph264depay
> > ! ffdec_h264 ! ffmpegcolorspace ! videoscale !
> x264enc ! rtph264pay
> > name=pay0 pt=96 sync=false )"
> > Problem now is that there is a 3 - 4 second latency
> when playing using that
> > pipeline and playing the resulting video through vlc
> or quicktime.
> > My question: How do I find what is causing the delay
> and what can I do to
> > reduce the delay?
>
>
> what if you don't explicitly set clock-base and
> seqnum-base?
>
> Regards
>
>
> > Thanks
> > Morris
> >
> > On Mon, Feb 28, 2011 at 2:33 AM, Marco Ballesio
> <[hidden email]>
> > wrote:
> >>
> >> Hi,
> >>
> >> On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford
> <[hidden email]>
> >> wrote:
> >> > I am working on receiving an udpsrc stream and
> publishing it as an rtsp
> >> > stream. This gst-launch string works just fine to
> receive the stream:
> >> > gst-launch-0.10 -v udpsrc port=5000
> caps="application/x-rtp,
> >> > media=\(string\)video, clock-rate=\(int\)90000,
> >> > encoding-name=\(string\)H264, payload=\(int\)96,
> >> > ssrc=\(guint\)2396357661,
> >> > clock-base=\(guint\)2297066863, seqnum-base=
> \(guint\)49439" !
> >> > rtph264depay !
> >> > decodebin ! ffmpegcolorspace ! videoscale !
> xvimagesink sync=false
> >> > but when I try to take that pipeline and put it
> into a test-launch, I
> >> > get
> >> > complaints about not being able to set the caps
> on udpsrc to
> >> > application/x-rtp.
> >> > Like this:
> >> > ./test-launch "( udpsrc port=5000
> caps="application/x-rtp,
> >> > media=\(string\)video, clock-rate=\(int\)90000,
> >>
> >> It's just about bash syntax. The way you're using
> the " make bash
> >> thinking you're passing test-launch a first
> argument like this:
> >>
> >> ( udpsrc port=5000 caps=
> >>
> >> concatenated to:
> >>
> >> application/x-rtp,
> >>
> >> and a second argument like:
> >>
> >> media=\(string\)video,
> >>
> >> useless to say this is not what you should pass to
> the test-launch
> >> command. I suggest you to try replacing the outmost
> pair of " with '
> >> or the innermost ones with \"
> >>
> >> Regards
> >>
> >> > encoding-name=\(string\)H264, payload=\(int\)96,
> >> > ssrc=\(guint\)2396357661,
> >> > clock-base=\(guint\)2297066863, seqnum-base=
> \(guint\)49439" !
> >> > rtph264depay !
> >> > decodebin ! ffmpegcolorspace ! videoscale !
> x264enc ! rtph264pay
> >> > name-pay0
> >> > pt=96 )"
> >> > ** (lt-test-launch:20772): CRITICAL **: could not
> parse launch syntax ((
> >> > udpsrc port=5000 caps=application/x-rtp,): could
> not set property "caps"
> >> > in
> >> > element "udpsrc0" to "application/x-rtp,"
> >> > ** (lt-test-launch:20772): CRITICAL **: could not
> create element
> >> > I could not find any examples of udpsrc in a
> test-launch line or udpsrc
> >> > in a
> >> > gst-rtsp-server 'c' program so I am not at all
> sure if what I am trying
> >> > to
> >> > do is valid.
> >> > Morris
> >> > _______________________________________________
> >> > gstreamer-devel mailing list
> >> > [hidden email]
> >> >
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >> >
> >> >
> >> _______________________________________________
> >> gstreamer-devel mailing list
> >> [hidden email]
> >>
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >
> >
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> >
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >
> >
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
>
>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
gstreamer-devel mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
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[hidden email]
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Marco Ballesio

Re: Problem with udpsrc in gst-rtsp-server

In reply to this post by morrisford

Hi,

On Tue, Mar 1, 2011 at 3:24 PM, Morris Ford <[hidden email]> wrote:
> I get:
> (lt-test-launch:21084): GStreamer-CRITICAL **: gst_poll_set_flushing:
> assertion `set != NULL' failed

Pretty strange. A very basic set of pipelines working on almost all
the gstreamer powered devices I've been hacking with so far:

gst-launch videotestsrc ! x264enc ! rtph264pay ! udpsink
host=127.0.0.1 port=1234

gst-launch udpsrc port=1234 ! "application/x-rtp, payload=96" !
rtph264depay ! ffdec_h264 ! xvimagesink sync=false

Just replace encoder, decoder and video sink with whatever your
platform provides.

I haven't been able to retrieve the "test-launch" sources. As in all
the commands you're posted so far there are no hints about sink
elements, I'm beginning to suspect it's using its own logic to handle
the depayloaded buffers (maybe an appsink). Have you tried to check
whether the buffering is actually occurring there?

Regards

>
> Morris
> On Tue, Mar 1, 2011 at 3:11 AM, Marco Ballesio <[hidden email]> wrote:
>>
>> Hi,
>>
>> On Mon, Feb 28, 2011 at 6:14 PM, Morris Ford <[hidden email]>
>> wrote:
>> > Thanks a lot for your help. That was the key to getting it to run. I now
>> > have a working rtsp-server pipe thus:
>> > ./test-launch "( udpsrc port=5000 caps=\"application/x-rtp,
>> > media=\(string\)video, clock-rate=\(int\)90000,
>> > encoding-name=\(string\)H264, payload=\(int\)96,
>> > ssrc=\(guint\)2396357661,
>> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439\" !
>> > rtph264depay
>> > ! ffdec_h264 ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay
>> > name=pay0 pt=96 sync=false )"
>> > Problem now is that there is a 3 - 4 second latency when playing using
>> > that
>> > pipeline and playing the resulting video through vlc or quicktime.
>> > My question: How do I find what is causing the delay and what can I do
>> > to
>> > reduce the delay?
>>
>> what if you don't explicitly set clock-base and seqnum-base?
>>
>> Regards
>>
>> > Thanks
>> > Morris
>> >
>> > On Mon, Feb 28, 2011 at 2:33 AM, Marco Ballesio <[hidden email]>
>> > wrote:
>> >>
>> >> Hi,
>> >>
>> >> On Mon, Feb 28, 2011 at 3:05 AM, Morris Ford <[hidden email]>
>> >> wrote:
>> >> > I am working on receiving an udpsrc stream and publishing it as an
>> >> > rtsp
>> >> > stream. This gst-launch string works just fine to receive the stream:
>> >> > gst-launch-0.10 -v udpsrc port=5000 caps="application/x-rtp,
>> >> > media=\(string\)video, clock-rate=\(int\)90000,
>> >> > encoding-name=\(string\)H264, payload=\(int\)96,
>> >> > ssrc=\(guint\)2396357661,
>> >> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" !
>> >> > rtph264depay !
>> >> > decodebin ! ffmpegcolorspace ! videoscale ! xvimagesink sync=false
>> >> > but when I try to take that pipeline and put it into a test-launch, I
>> >> > get
>> >> > complaints about not being able to set the caps on udpsrc to
>> >> > application/x-rtp.
>> >> > Like this:
>> >> > ./test-launch "( udpsrc port=5000 caps="application/x-rtp,
>> >> > media=\(string\)video, clock-rate=\(int\)90000,
>> >>
>> >> It's just about bash syntax. The way you're using the " make bash
>> >> thinking you're passing test-launch a first argument like this:
>> >>
>> >> ( udpsrc port=5000 caps=
>> >>
>> >> concatenated to:
>> >>
>> >> application/x-rtp,
>> >>
>> >> and a second argument like:
>> >>
>> >> media=\(string\)video,
>> >>
>> >> useless to say this is not what you should pass to the test-launch
>> >> command. I suggest you to try replacing the outmost pair of " with '
>> >> or the innermost ones with \"
>> >>
>> >> Regards
>> >>
>> >> > encoding-name=\(string\)H264, payload=\(int\)96,
>> >> > ssrc=\(guint\)2396357661,
>> >> > clock-base=\(guint\)2297066863, seqnum-base=\(guint\)49439" !
>> >> > rtph264depay !
>> >> > decodebin ! ffmpegcolorspace ! videoscale ! x264enc ! rtph264pay
>> >> > name-pay0
>> >> > pt=96 )"
>> >> > ** (lt-test-launch:20772): CRITICAL **: could not parse launch syntax
>> >> > ((
>> >> > udpsrc port=5000 caps=application/x-rtp,): could not set property
>> >> > "caps"
>> >> > in
>> >> > element "udpsrc0" to "application/x-rtp,"
>> >> > ** (lt-test-launch:20772): CRITICAL **: could not create element
>> >> > I could not find any examples of udpsrc in a test-launch line or
>> >> > udpsrc
>> >> > in a
>> >> > gst-rtsp-server 'c' program so I am not at all sure if what I am
>> >> > trying
>> >> > to
>> >> > do is valid.
>> >> > Morris
>> >> > _______________________________________________
>> >> > gstreamer-devel mailing list
>> >> > [hidden email]
>> >> > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>> >> >
>> >> >
>> >> _______________________________________________
>> >> gstreamer-devel mailing list
>> >> [hidden email]
>> >> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>> >
>> >
>> > _______________________________________________
>> > gstreamer-devel mailing list
>> > [hidden email]
>> > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>> >
>> >
>> _______________________________________________
>> gstreamer-devel mailing list
>> [hidden email]
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>

_______________________________________________
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