[FFmpeg-user] Wanted: Fields-to-frames filter that does not add cosmetics

Paul B Mahol onemda at gmail.com
Fri Mar 5 20:37:57 EET 2021

On Fri, Mar 5, 2021 at 7:13 PM Mark Filipak (ffmpeg) <markfilipak at bog.us>

> On 2021-03-05 10:35, pdr0 wrote:
> > Mark Filipak (ffmpeg) wrote
> >> 'yadif=mode=send_field' is one way to convert fields to frames at the
> same
> >> frame size and twice the
> >> FR. It does it by repeating fields, but it also adds cosmetics -- it is,
> >> after all, a motion
> >> interpolation filter.
> >>
> >> I seek a fields-to-frames filter that does not add cosmetics. In my
> >> pursuit, I look for such a
> >> filter every time I peruse the filter docs for anything. I've yet to
> find
> >> such a filter.
> >>
> >> Do you know of a fields-to-frames filter that does not add cosmetics?
> >
> > Yadif is not a motion interpolation filter
> Okay, not motion interpolation. My bad. I remember "motion adaptive" being
> used to describe what
> yadif does. And there's this: http://avisynth.nl/index.php/Yadif
> "...by Michael Niedermayer. It check pixels of previous, current and next
> frames to re-create the
> missed field by some local adaptive method (edge-directed interpolation)
> and uses spatial check to
> prevent most artifacts."
> I need line doubling that, as its bottom field, simply duplicates the top
> field.
> [A+b] ==> [A+A]   ...if a [b+b] frame is also produced, I'll throw it away.
> I know of several ways to do it with a series of filters but they take
> extra time. A simple,
> dedicated line double would be fast and just what I need.

No, stop trolling. There is not extra time taken whatsoever.

Please go troll elsewhere.

> The filter will be applied to a single frame that's isolated via modulo
> selection.
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