On Fri, Jul 24, 2015 at 1:34 PM, Ivan Uskov <ivan.us...@nablet.com> wrote: > Hello All, > > The current implementation of libavcodec/qsvdec_h264.c does not store > original extradata buffer. At the same time the > \libavcodec\h264_mp4toannexb_bsf filter does modify extradata buffer > inplace and fails to process it next time if decoder reinitializes. > So it is not possible to decode mp4 or mkv container using ffmpeg > command line with h264_qsv decoder. > The attached patch solves this issue. The corresponded code was taken > from \libavcodec\crystalhd.c which also uses the h264_mp4toannexb_bsf > filter. >
I'm slightly confused by the entire concept here. - Why does the decoder need to re-init anyway? - You want the bsf to convert the bitstream to annexb, but not the extradata? Why not? - Ideally, a decoder should support both bitstream syntax without the bsf, since the bsf is a hack for re-muxing, and many playback applications do not use the bsf since practically no decoder otherwise needs them. - Hendrik _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
