----- Original Message ----- > From: "Kieran Kunhya" <kier...@obe.tv> > To: "Wiebe Cazemier" <wi...@halfgaar.net> > Cc: "Kieran Kunhya" <kier...@obe.tv> > Sent: Sunday, 29 March, 2015 10:03:05 PM > Subject: Re: [FFmpeg-devel] [PATCH] Dolby Digital dynamic range compression > (drc_scale) is now 0 by default > > > There was another thread about it (discussed with Michael Niedermayer, > > among others). In short, developers don't seem to know about or don't > > implement the feature. Kodi developers denied that it applied DRC on AC3, > > not knowing that ffmpeg did it. This meant that DRC couldn't be turned > > off. VLC also lacks the option, but does apply it. > > > > If applications want DRC, they should set the drc_scale option. Having > > ffmpeg do it creates mystery behavior. > > DRC is in the spec, if you want to violate the spec, then turn it off > yourself.
How? It's in the spec as an *option*, to cater to those who have bad sound systems. If ffmpeg already applies DRC, and software using ffmpeg doesn't set 'drc_scale', it's no longer an option, it becomes mandatory. That's the issue. Madshi's explanation is spot on. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
