On Wed, Jan 01, 2020 at 12:42:51PM +0800, myp...@gmail.com wrote: > On Wed, Jan 1, 2020 at 8:59 AM Andreas Rheinhardt > <andreas.rheinha...@gmail.com> wrote: > > > > The Matroska muxer currently does not check the return value of > > ff_isom_write_hvcc(), the function used to write mp4-style > > HEVC-extradata as Matroska also uses it. This was intentionally done in > > 7a5356c72 to allow remuxing from mpeg-ts. > > > > But if ff_isom_write_hvcc() fails, it has not output anything and the > > file ends up without CodecPrivate and, if the input was Annex B, with > > Annex B data, which is against the spec. So check the return value > > again. > > > > The underlying issue of not having extradata seems to have been fixed by > > the introduction of the extract_extradata bitstream filter. > > > > Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com> > > --- > > libavformat/matroskaenc.c | 5 ++--- > > 1 file changed, 2 insertions(+), 3 deletions(-) > > > > diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c > > index 76c38b8d09..8cea829b31 100644 > > --- a/libavformat/matroskaenc.c > > +++ b/libavformat/matroskaenc.c > > @@ -748,9 +748,8 @@ static int > > mkv_write_native_codecprivate(AVFormatContext *s, AVIOContext *pb, > > return ff_isom_write_avcc(dyn_cp, par->extradata, > > par->extradata_size); > > case AV_CODEC_ID_HEVC: > > - ff_isom_write_hvcc(dyn_cp, par->extradata, > > - par->extradata_size, 0); > > - return 0; > > + return ff_isom_write_hvcc(dyn_cp, par->extradata, > > + par->extradata_size, 0); > > case AV_CODEC_ID_AV1: > > if (par->extradata_size) > > return ff_isom_write_av1c(dyn_cp, par->extradata, > > -- > > 2.20.1 > LGTM
will apply thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Breaking DRM is a little like attempting to break through a door even though the window is wide open and the only thing in the house is a bunch of things you dont want and which you would get tomorrow for free anyway
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