Hi. My 2 cents on this that many other decoder implementations seems to have same problem
For example, the Flash 10 decoder has these issues - it's especially visible on YouTube movies. Regards. 2009/7/8 Stephan Assmus <[email protected]> > Hi, > > On 2009-07-08 at 19:42:01 [+0200], Mediasystems GmbH <[email protected] > > > wrote: > > Now I probably have a proof of fact that frame accurate seeking on H.264 > > video (transport) streams is apparently not possible with ffmpeg until > > now: I tried out VLC media player V 1.0.0 and noticed that VLC also has > > problems with frame accurate seeking. When I open H.264 mts files and > > scroll the slider most frames are not decoded properly and show > > artifacts. Under assumption that VLC uses ffmpeg to decode H.264 I can > > assume that frame accurate seeking on H.264 doesn't work with ffmpeg. Can > > anybody confirm that? > > From what I heard, H.264 can reference frames completely outside of the > current GOP, which may be the problem here. If those are flushed with the > rest of the buffers, or haven't even been decoded yet, then it should be a > problem. I am using the API to give the time stamp for a keyframe backwards > of a requested time stamp, but as far as I can tell, the code searches the > index to find the next timestamp, it doesn't seem to take into account more > advanced requirements of the current decoder. > > Best regards, > -Stephan > _______________________________________________ > libav-user mailing list > [email protected] > https://lists.mplayerhq.hu/mailman/listinfo/libav-user > _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
