[Ffmpeg-devel] Seeking with in an MPEGTS
Tue Jun 21 15:48:39 CEST 2005
Nico Sabbi said:
> Andy Parkins wrote:
>>On Tuesday 2005 June 21 14:24, M?ns Rullg?rd wrote:
>>>>I've generated an MPEG transport stream containing an MPEG4 ES using
>>>>libavformat. When playing back using ffplay, it plays back perfectly
>>>>until I perform a seek. After that the stream breaks up for a bit, then
>>>>settles down but I start to get lots of error messages from h263.c; for
>>>MPEG TS doesn't contain information about key frames, so when you seek you
>>>are likely to end up with some P/B frames before the next I frame. Nothing
>>>to be worried about. You could junk the decoder output until the next I
>>>frame comes around. Look at AVFrame.key_frame.
>>Thanks; but I don't think this is the case. I'm happy with the messed up
>>picture, which fixes as soon as there is a key frame. However, the quoted
>>error messages continue well after the next key frame has been passed.
>>Something about seeking is throwing off the decoder permanently.
> isn't there a way to reset the decoders in lavc before seeking,
> and tell them to reprise decoding from the next keyframe?
avcodec_flush_buffers might be what you want.
mru at inprovide.com
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