Reading RTP MJPEG stream from a file

[Anton Pryima]

Hello Wolfgang,

Try to move rtpjitterbuffer ! rtpjpegdepay to the first pipeline and dump
to the disk already depayloaded stream.

Best regards,
Anton.

On Thu, Jul 9, 2020 at 5:28 PM Wolfgang Grandegger <wg at grandegger.com>
wrote:

> Hello,
>
> I have recorded a RTP JPEG stream to a file with:
>
>   $ gst-launch-1.0 -v -e udpsrc port=50004 \
>     caps="application/x-rtp, media=(string)video, clock-rate=(int)90000,
> encoding-name=(string)JPEG, payload=(int)26, framerate=(fraction)30/1" \
>     ! filesink location=rtp.img
>
> Is it possible to feed these data into a GStreamer pipleline using
> "filesrc"?
> I tried:
>
>   $ gst-launch-1.0 -v filesrc location=rtp.img \
>       ! application/x-rtp, media=video,clock-rate=90000,
> encoding-name=JPEG, payload=26, framerate=30/1 \
>       ! rtpjitterbuffer ! rtpjpegdepay ! vaapijpegdec ! vaapisink
>   ...
>   0:00:00.891862447 32571 0x560f722b5c50 ERROR        rtpjitterbuffer
> gstrtpjitterbuffer.c:1399:gst_jitter_buffer_sink_parse_caps:<rtpjitterbuffer0>
> Got caps with wrong payload type (got 92, expected 26)
>   Additional debug info:
>   gstrtpjitterbuffer.c(3217): gst_rtp_jitter_buffer_chain ():
> /GstPipeline:pipeline0/GstRtpJitterBuffer:rtpjitterbuffer0:
>   Received invalid RTP payload, dropping
>   0:00:00.891870333 32571 0x560f722b5c50 WARN         rtpjitterbuffer
> gstrtpjitterbuffer.c:3224:gst_rtp_jitter_buffer_chain:<rtpjitterbuffer0> No
> clock-rate in caps!, dropping buffer
>   0:00:00.891881175 32571 0x560f722b5c50 WARN         rtpjitterbuffer
> gstrtpjitterbuffer.c:3217:gst_rtp_jitter_buffer_chain:<rtpjitterbuffer0>
> warning: Received invalid RTP payload, dropping
>   WARNING: from element
> /GstPipeline:pipeline0/GstRtpJitterBuffer:rtpjitterbuffer0: Could not
> decode stream.
>
> "rtpjitterbuffer" seems to get invalid data. Hm, likely I have missed
> something!
>
> Thanks for input...
>
> Wolfgang
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