On Wed, Oct 13, 2021 at 9:58 AM Soft Works <softwo...@hotmail.com> wrote:
> > > > -----Original Message----- > > From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On Behalf Of > > Soft Works > > Sent: Wednesday, October 13, 2021 9:36 AM > > To: FFmpeg development discussions and patches <ffmpeg- > > de...@ffmpeg.org> > > Subject: Re: [FFmpeg-devel] [PATCH 2/5] fftools/cmdutils: Print > > filter input/output formats in help output > > > > > > > > > -----Original Message----- > > > From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On Behalf Of > > > Paul B Mahol > > > Sent: Wednesday, October 13, 2021 9:27 AM > > > To: FFmpeg development discussions and patches <ffmpeg- > > > de...@ffmpeg.org> > > > Subject: Re: [FFmpeg-devel] [PATCH 2/5] fftools/cmdutils: Print > > > filter input/output formats in help output > > > > > > scale, extractplanes, alphaextract, waveform, vectorscope. > > > > See the results below. Nothing is flawed. Of course there can't be an > > output in all cases, as you have pointed out correctly. > > > > But for the remaining 95% of filters, the formats output is very > > useful. > > (and correct) > As proved by above, this is big hack and should not be applied, its also ugly. > > I'd also like to point out that this information is currently completely > inaccessible for anybody without looking it up in the source code. > > Knowing about a filter's supported formats is important for building > efficient filter chains and avoiding unexpected auto format > conversions. > > I had added this output years ago and the information (which is > parsed from the help output) is an important prerequisite for our > automated filter-string-building (outside of ffmpeg). > > I also use it regularly for looking up filter formats and I think > it might be useful for others as well. > > Kind regards, > softworkz > > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
