Hi Ionel,
Ionel POP wrote:
> I work on two encoders (hardware) which are sending MPEG4 and H264 over
> RTSP. I recover MPEG4/H264 data using live555 and I passed it to
> av_decode_video. In both cases, I-frames are well decoded, but I notice
> some problems while decoding P frames. avcodec_decode_video return no
> error, but the objects leave a trail behind while moving.
Is ffplay able to correctly play the "rtsp://..." URL? If yes, then there
is some problem in your code.
> I don't know if this change something: in the case of MPEG4, I received no
> information in fmtp_config. For H264, I got some data in
> fmtp_spropparametersets. I transform this data (similar to the mechanism
> used in VLC) and treat it then like any other input data.
I think this is wrong, and you should put it in extradata instead.
> VLC display both video without problem. If I save raw MPEG4/H264 data to a
> file (in case of H264, spropparametersets are also saved), the file is
> displayed by VLC and both I- and P- frames are decoded properly.
>
> I think I miss something in the configuration of the codec or context, but
> I don't see what.
If ffplay is able to receive the stream, you can have a look at its code...
Luca
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