some B frames are themselves reference frames, and some are not. if I am not mistaken one of the is signalled as 'B' while the other is 'b'
On Tue, Nov 25, 2008 at 11:38 AM, Vladimir Eremeev <[EMAIL PROTECTED]> wrote: > > > Aviad Rozenhek wrote: > > > > what about B frames, and even better, knowing if a B frame is a reference > > frame or not? > > > > I derive such information from the analysis of AVPacket.data. > Just scan for sequences of 0x00 0x00 0x01 and analyze bits following them. > Here is the quick reference of MPEG2 headers: > http://dvd.sourceforge.net/dvdinfo/mpeghdrs.html > > And what is "B frame is a reference frame"? > > -- > View this message in context: > http://www.nabble.com/getting-video-pict_type-without-decoding-tp20596279p20677882.html > Sent from the libav-users mailing list archive at Nabble.com. > > _______________________________________________ > 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
