[FFmpeg-devel] Encoding video stream into CIF and 25 fps video format
Fri Oct 5 15:43:13 CEST 2007
I'm a beginner with video codecs and ffmpeg so I'd appreciate some help.^^
I'm doing some devel on a program which encode a video stream provided
by a webcam using h263 codec from libavcodec library. Until today, the
program has been working perfectly fine and encoded the video into QCIF
and 10fps video format.
However, I wish to change those settings and encode the video into CIF
and 25 fps video format. And this is my big problem !!! Firstly I'm
unable to get 25 fps, the video stream don't go over 15 fps...
Secondary, when I try to encode the video into CIF I got a lot of error
- rc buffer underflow
- concealing xxx DC, xxx AC, xxx MV errors
And something weird is that the video quality is really good during a
few seconds and after that it's full of grey pixels.So do you know how I
could solve this problem ? is there some setting I didn't well like
buffer size, bit rate or something else... ?
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