On Tue, Sep 10, 2019 at 1:03 AM Aman Gupta <ffm...@tmm1.net> wrote: > On Mon, Sep 9, 2019 at 3:19 PM Hendrik Leppkes <h.lepp...@gmail.com> > wrote: > > > On Tue, Sep 10, 2019 at 12:00 AM Aman Gupta <ffm...@tmm1.net> wrote: > > > > > > On Mon, Sep 9, 2019 at 2:47 PM Carl Eugen Hoyos <ceffm...@gmail.com> > > wrote: > > > > > > > Am Mo., 9. Sept. 2019 um 22:19 Uhr schrieb Aman Gupta < > ffm...@tmm1.net > > >: > > > > > > > > > > From: Aman Gupta <a...@tmm1.net> > > > > > > > > > > These are simple algorithms which can be run efficiently > > > > > on low powered devices to produce deinteraced images. > > > > > > > > Please provide some numbers about the performance > > > > (and subjective visual quality) of the new C code in > > > > comparison to existing deinterlacers in FFmpeg. > > > > > > > > > > Comparison of visual quality can be seen on VLC's website: > > > https://wiki.videolan.org/Deinterlacing > > > > > > Regarding performance- none of the filters currently available in > ffmpeg > > > are fast enough to deinterlace video in real time on ARM chips used by > > > popular Android or iOS devices. They're all very computationally > > expensive, > > > and do not have any ARM SIMD implementations. The deinterlacers from > VLC > > > use simple mathematical averages optimized by SIMD, and have been used > by > > > VLC on such devices for many years. I don't have any hard numbers to > > share, > > > but in my experience I can decode+deinterlace video for real time > > playback > > > in VLC on any cheap Android phone, whereas other ffmpeg-based players > > > cannot. > > > > > > > None of those algorithms are really worth using, none are actual > > "deinterlacers". Blend and Mean are just plain out terrible, and the > > other options are just dumb bob'ers which you can do with avfilter > > as-is today with a combination of the separatefields filter (which is > > zero-copy based on frame metadata only) and optional scaling > > afterwards. > > > > I don't disagree that many of them are overly simplistic. I only copied > them all for completeness sake. > > However, as terrible as they may be they're not as bad as displaying > interlaced frames directly. Blend and Linear produce acceptable image > quality imho. > > Linear averages lines from both fields to generate a new image. Is > something like this possible with any existing filter combined with > separatefields? >
I do not think its currently possible, anyway just add only linear variant and be done. > > Aman > > > > > > - Hendrik > > _______________________________________________ > > 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". _______________________________________________ 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".
