[Libav-user] Criteria for h.264 key-frame detection
Carl Eugen Hoyos
cehoyos at ag.or.at
Tue Oct 22 12:57:17 CEST 2013
Robert Krüger <krueger at ...> writes:
> I just cut away everything from the file until the start
> of the packet containing the 27th frame
> (tail -c4329532 gh1_720p.mts > gh1_720p_cat.mts) and the
> resulting file decodes without artifacts using ffmpeg.
(With or without -flags2 showall?)
> The number of decoded frames is also as expected. So I
> think this is at least an indication that the 27th
> frame is indeed a valid random access point.
I don't think the fact that a frame can be decoded
(correctly) implies that it is a random access point.
More information about the Libav-user