2016-12-30 12:07 GMT+03:00 Miroslav Slugeň <thunde...@email.cz>: > Dne 30.12.2016 v 05:48 Ali KIZIL napsal(a): > >> 2016-12-30 0:02 GMT+03:00 Miroslav Slugeň <thunde...@email.cz>: >> >> >> Somebody changed AUD to active in NVENC by default, which is not very >>> clever, libx264 also has this future disabled, so we should stay in sync >>> with libx264 behavior. >>> >>> Enabled AUD will work only without B-frames. There is BUG in Nvidia NVENC >>> when you use AUD for H264 with B-frames, it will return corrupted stream, >>> because NVIDIA is inserting AUD type 0 (I-frame) before B-frames instead >>> of >>> AUD type 7 (any-frame). >>> >>> H264 encoded with B-frames and AUD active will not play for example on >>> Panasonic TX-AS640E, other decoders just ignore wrong AUD type. >>> >>> >>> -- >>> Miroslav Slugeň >>> >>> >>> AUD set to active by default was for LG and Sony like UHD TVs which could >> not decode NVENC encoded HEVC MPEGTS properly. >> If patch sets AUD active by default if there is no B-Frames (as so in >> NVENC >> HEVC encoding), patch will be ok in common. >> _______________________________________________ >> ffmpeg-devel mailing list >> ffmpeg-devel@ffmpeg.org >> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel >> >> I checked how libx264 and libx265 works > > For libx265 default is off: > > void x265_param_default(x265_param* param) { > param->bEnableAccessUnitDelimiters = 0; > } > > Only for UHD BLURAY is on: > > if (p->uhdBluray) { > p->bEnableAccessUnitDelimiters = 1; > } > > For libx264 default is off: > > void x264_param_default( x264_param_t *param ) { > param->b_aud = 0; > } > > Only for BLURAY and AVC-Intra compat > > if( h->param.b_bluray_compat ) { > h->param.b_aud = 1; > } > > /* 200,100,50 */ > if( h->param.i_avcintra_class ) { > h->param.b_aud = 1; > } > > So how we should implement this to NVENC? :) > > I still think we should default AUD to off and set in on only in special > cases like BLURAY and AVC-Intra. > > > -- > Miroslav Slugeň > +420 724 825 885 > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel >
From my opinion, we can set AUD on by default for HEVC as there is no B-Frames. When AUD is on at HEVC, I checked many TVs (Samsung, LG, Sony, Philips etc.) all look OK. It will be better to hear comments from others as well. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
