[gst-devel] Simulating a video camera with a file

Stefan Kost ensonic at hora-obscura.de
Thu Feb 11 13:51:15 CET 2010

katarina.balac at usi.ch wrote:
> Hello,
> I am trying to read raw video data from a file and then encode it using theora encoder. I would like to use standard test videos such as these: 
> http://media.xiph.org/video/derf/  (uncompressed YUV4MPEG, says it is the format accepted by the Theora encoder tools)
> http://trace.eas.asu.edu/yuv/
> I have tried with a pipeline like this: filesrc | ffmpegcolorspace | theoraenc | oggmux | filesink and the videos from the links above but I am getting the Error: not negotiated.

Use videoparse for raw files.


> Everything works if I substitute the file source with the test source videotestsrc or a webcam v4l2src but this does not allow me to use standard test videos. 
> Is something missing in my pipeline or am I using the wrong format?
> Any suggestions will be appreciated.
> Thank you in advance,
> Katarina
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