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Regarding camcoder exit using gst-launch

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Manish Sharma-5

Regarding camcoder exit using gst-launch

Hi All,

I am using following camcoder gst-pipeline on my board with gst-launch application.

gst-launch avimux name=mux bigfile=true ! filesink location=cam_vga_20.avi { alsasrc blocksize=4096 ! 'audio/x-raw-int,endianness=1234,signed=true,width=16,depth=16,rate=44100,channel=2' ! queue ! omx_aacenc ! mux. } { v4l2src queue-size=16 ! 'video/x-raw-yuv,framerate=20/1,width=640,height=480' ! tee name=tvv tvv. ! queue ! xvimagesink tvv. ! queue max-size-buffers=1 ! omx_mpeg4enc ! mux.}

It works fine but when I press ctrl+C, the v4l2 and alsa src are closed properly. To over come this I have used 'num-buffers' property in v4l2src and alsasrc. Now the application exits after encoding the mentioned number of buffers. Following is the command:

gst-launch avimux name=mux bigfile=true ! filesink location=cam_vga_20.avi { alsasrc blocksize=4096 num-buffers=300 ! 'audio/x-raw-int,endianness=1234,signed=true,width=16,depth=16,rate=44100,channel=2' ! queue ! omx_aacenc ! mux. } { v4l2src num-buffers=150 queue-size=16 ! 'video/x-raw-yuv,framerate=20/1,width=640,height=480' ! tee name=tvv tvv. ! queue ! xvimagesink tvv. ! queue max-size-buffers=1 ! omx_mpeg4enc ! mux.}

Now the issue is everytime I need to calculate the 'num-buffers' based on audio and video parameters otherwise the EOS of audio and video will not be similar and cause problem during playback.

Is there any altenate way to acheive EOS?

Thanks and Regards,

Manish

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Nie Jun

Re: Regarding camcoder exit using gst-launch

Write an application and create a thread to interact with user input to send eos event to the pipeline. Pipeline will send eos to every source plugin in pipeline.

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Manish Sharma-5

Re: Regarding camcoder exit using gst-launch

One doubt I am using gst-launch it should also send EOS event to pipeline when ctrl+C is pressed.

On Fri, Nov 28, 2008 at 2:54 PM, Nie Jun <[hidden email]> wrote:

Write an application and create a thread to interact with user input to send eos event to the pipeline. Pipeline will send eos to every source plugin in pipeline.

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Felipe Contreras

Re: [Gstreamer-openmax] Regarding camcoder exit using gst-launch

In reply to this post by Manish Sharma-5

On Fri, Nov 28, 2008 at 8:28 AM, Manish Sharma <[hidden email]> wrote:

> Hi All,
>
> I am using following camcoder gst-pipeline on my board with gst-launch
> application.
>
> gst-launch avimux name=mux bigfile=true ! filesink location=cam_vga_20.avi {
> alsasrc blocksize=4096 !
> 'audio/x-raw-int,endianness=1234,signed=true,width=16,depth=16,rate=44100,channel=2'
> ! queue ! omx_aacenc ! mux. } { v4l2src queue-size=16 !
> 'video/x-raw-yuv,framerate=20/1,width=640,height=480' ! tee name=tvv tvv. !
> queue ! xvimagesink tvv. ! queue max-size-buffers=1 ! omx_mpeg4enc ! mux.}

First of all, {} are old style, then, it's 'channels', not 'channel',
also, it would be better if you specify the YUV format, queues should
be before the muxer AFAIK, and last, maybe you should try first
without the xvimagesink

gst-launch-0.10 avimux name=mux bigfile=true ! filesink
location=cam_vga_20.avi \
alsasrc blocksize=4096 !
'audio/x-raw-int,endianness=1234,signed=true,width=16,depth=16,rate=44100,channels=2'
! omx_aacenc ! queue ! mux. \
v4l2src queue-size=16 !
'video/x-raw-yuv,framerate=20/1,width=640,height=480,format=(fourcc)I420'
! omx_mpeg4enc ! queue ! mux.

How does that works?

> It works fine but when I press ctrl+C, the v4l2 and alsa src are closed
> properly.

I guess you meant "aren't closed properly".

--
Felipe Contreras

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Manish Sharma-5

Re: [Gstreamer-openmax] Regarding camcoder exit using gst-launch

HI Felipe,

First of all, {} are old style, then, it's 'channels', not 'channel',
also, it would be better if you specify the YUV format, queues should
be before the muxer AFAIK, and last, maybe you should try first
without the xvimagesink

gst-launch-0.10 avimux name=mux bigfile=true ! filesink

location=cam_vga_20.avi \
alsasrc blocksize=4096 !
'audio/x-raw-int,endianness=1234,signed=true,width=16,depth=16,rate=44100,channels=2'
! omx_aacenc ! queue ! mux. \
v4l2src queue-size=16 !
'video/x-raw-yuv,framerate=20/1,width=640,height=480,format=(fourcc)I420'
! omx_mpeg4enc ! queue ! mux.

How does that works?

Thank for the above information it works fine. It is playing fine with the media player. How to add the xvimagesink where to put the queue.

> It works fine but when I press ctrl+C, the v4l2 and alsa src are closed
> properly.

I guess you meant "aren't closed properly".

Yup it is a mistake... :)

Regards,

Manish