Am Mi., 11. März 2020 um 13:44 Uhr schrieb Fu, Linjie <[email protected]>: > > > From: ffmpeg-devel <[email protected]> On Behalf Of > > Carl Eugen Hoyos > > Sent: Wednesday, March 11, 2020 18:48 > > To: FFmpeg development discussions and patches <ffmpeg- > > [email protected]> > > Subject: Re: [FFmpeg-devel] [PATCH] lavc/vp9: fix reference frame > > dimensions check > > > > Am Mi., 11. März 2020 um 11:44 Uhr schrieb Linjie Fu <[email protected]>: > > > > > > With the description in frame size with refs semantics (SPEC 7.2.5), > > > it is a requirement of bitstream conformance that for at least one > > > reference frame has the valid dimensions. > > > > > > Modify the check to make sure the decoder works well in the condition > > > that not all references frames have valid dimensions. > > > > > > Signed-off-by: Linjie Fu <[email protected]> > > > --- > > > Fix the the decoding faiure for frames with dimension-ilegal refs. > > > Verifying with native vp9 and libvpx-vp9 decoder, the md5 result matches. > > > > > https://github.com/webmproject/libvpx/blob/master/vp9/decoder/vp9_de > > codeframe.c#L1580 > > > > Did you provide a sample? > > > I'd like to, but to be honest, it seems kind of hard to produce such a stream > available > for public (compared with setting TU depth for one frame), hence I could not > promise > but will try. (any hints for this?) > > To elaborate more, one of the failure case is a 480x272 inter frame with two > refs: > Ref[0]: 1920x1088 key frame, invalid; > Ref[1]: 960x 544 inter frame, valid; > > Which reports: > [vp9 @ 0x55b18d9be280] Invalid ref frame dimensions 1920x1088 for frame size > 480x272
This should be even more part of the commit message if you cannot provide a sample. Carl Eugen _______________________________________________ ffmpeg-devel mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
