[gst-devel] How to save a stream from a network into a file

Mon Jun 1 14:13:34 CEST 2009

Hi Sudarshan, thank you again for the prompt response. I tried your suggestion but still got error. When i try the first suggestion, I got the following error:
WARNING: erroneous pipeline: could not parse caps "video/x-h263,width=176,height=144,framerate=25\"
And then I removed the space after 25 (the frame rate - please look at the suggested caps below) and got the following error: WARNING: erroneous pipeline: could not link rtph263pdepay0 to avimux0. It considers as if the caps is not there.

When I use the second suggestion again with the space after 263, i got the same kind of error as above. When i delete the space, I got the following error:
streaming task paused, reason not-negotiated (-4)

I don't know what is hapening.

BTW, on the sender side I used the following command:
gst-launch v4l2src ! video/x-raw-rgb,width=320,height=240 ! queue ! videorate ! video/x-raw-rgb,rate=15/1 ! ffmpegcolorspace! ffenc_h263p ! rtph263ppay ! udpsink port=5000

I hope this will give you the clue about the problem. I run the command on Ubuntu Interpid.

Thank you.

- Zelalem S. 

Date: Mon, 1 Jun 2009 13:52:34 +0530
From: bisht.sudarshan at gmail.com
To: gstreamer-devel at lists.sourceforge.net
Subject: Re: [gst-devel] How to save a stream from a network into a file

Hi ,

 for exapmle try these  :- 

         gst-launch-0.10 udpsrc port=5000 caps="application/x-rtp, media=(string)video,clock-rate=(int)90000, encoding-name=(string)H263-1998" num-buffers=5000 ! queue ! rtph263pdepay !  'video/x-h263,width=176,height=144,framerate=25 '   !    avimux ! filesink location=test.avi

or 

 gst-launch-0.10 udpsrc port=5000 caps="application/x-rtp, media=(string)video,clock-rate=(int)90000, encoding-name=(string)H263-1998" num-buffers=5000 ! queue ! rtph263pdepay !  'video/x-h263 '   !    avimux ! filesink location=test.avi

On Mon, Jun 1, 2009 at 1:00 PM, Zelalem Sintayehu <zelalems at hotmail.com> wrote:

Hi Sudarshan, thank you for your prompt response. But, I am new to gstream and I think I don't understand your comment. Sorry to bother you again. I tried to set the caps property of the rtpdepayloader by putting caps="application/x-rtp, media...." for the rtph263pdepay element, but I get the following error: WARNING: erroneous pipeline: no property "caps" in element "rtph263pdepay0". So, do i need to include a new element in between the two elements (rtp263depay and avimux) or how can i provide caps? 

Thank you again for your assistance.

- Zelalem S. 

Date: Sun, 31 May 2009 10:58:31 +0530
From: bisht.sudarshan at gmail.com
To: gstreamer-devel at lists.sourceforge.net

Subject: Re: [gst-devel] How to save a stream from a network into a file 

Hi, 
          Hi ,,
         Try providing caps between  rtph263pdepay and avimux .

On Sat, May 30, 2009 at 8:28 PM, Zelalem Sintayehu <zelalems at hotmail.com> wrote:

Hi, I was trying to transfer video and audio using network. I used teh examples from the net to do that and succeeded. But now I wanted to save the stream into file and faced with some problem. Please look at the following command:

gst-launch-0.10 udpsrc port=5000 caps="application/x-rtp, media=(string)video,clock-rate=(int)90000, encoding-name=(string)H263-1998" num-buffers=5000 ! queue ! rtph263pdepay ! ffdec_h263 ! xvimagesink   ----- this is what i used to accept and display a video stream. 

So, to save the stream into a file I changed the last two elements (the ffmpeg decoder and xvimake sink). I thought that since the packet coming from the other machine is already encoded in h263p codec, replacing these two elements  with the following elements would solve my problem: I used these elments: avimux ! filesink location=testnet.avi . That is, i connected the rtph263pdepay element to the avimux element and to the file sink element sequentially as follows. 

 gst-launch-0.10 udpsrc port=5000 caps="application/x-rtp, media=(string)video,clock-rate=(int)90000, encoding-name=(string)H263-1998" num-buffers=5000 ! queue ! rtph263pdepay ! avimux ! filesink location=test.avi

But I got an error, that says: streaming task paused, reason not-negotiated (-4)

Please help me on how I can save a stream. 

Thank you.

- Zelalem S. 

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