[FFmpeg-user] Objectively best deinterlacer?

[Paul B Mahol]

On 1/22/14, Leo Izen <leo.izen at gmail.com> wrote:
> Is there any filter which is objectively best at deinterlacing? I like
> the results from -filter:v 'pp=fd' but I didn't know if some others such
> as -filter:v 'w3fdif' were objectively better. Is there some kind of
> metric?
>
> Also, when deinterlacing a fully-interlaced video with -filter:v w3fdif,
> the filter doubles the framerate. I have been dealing with this (rather
> than dropping the frames) via
> -filter:v 'w3fdif,select=outputs=2:expr=mod(n\,2)+1,blend'

This does nothing as blend with no options returns first input.

> although I'm not sure if this is the right way to do this. (Although I
> appreciate that FFmpeg is smart enough to realize that select outputs
> two streams and blend takes two as an input, so I don't have to futz
> with [v] stuff.)
>
> Should I go about this with w3fdif? Should I be happy with -filter:v
> pp=fd? I noticed that w3fdif is very slow, as in I got 13 fps filter
> time on a 1080p/60i input, where yadif and pp=fd encoded as fast as the
> encoder would work (which is faster than realtime.)
>
> Thanks,
>
> Leo Izen
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