[FFmpeg-user] De-interlacing and Inverse Telecining Questions

[Andrey Aleksandrovich]

> fieldmatch is a modern inverse telecine filter that is
> said to beat MPlayer's pullup filter for every kind of
> source file (but needs more resources).

FFmpeg 1.0.7 - I don't have that filter (fieldmatch) available.
Is that filter new feature of latest versions?

On 8/2/13, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> Young Kim <shadowing71 <at> gmail.com> writes:
>
>> I've been reading through the ffmpeg documentation
>> about deinterlacing and inverse telecining, and it's
>> a bit confusing. In particular, there seems to be a
>> myriad ways of achieving this (i.e. yadif, fieldmatch,
>> and kerndeint). Does anyone happen to know what the
>> difference is among these
>
> You first have to understand that while interlaced and
> telecined video look similar they are fundamentally
> different: Deinterlacing means inventing 50% of the
> image where no image was, inverse telecine brings the
> original frames back that were used as input for the
> telecine process.
> (Or in other words: The telecine process only duplicates
> some information while interlacing means throwing
> away 50% of the video information - this may even
> happen within camera equipment.)
>
> You should not deinterlace telecined material and you
> cannot inverse telecine interlaced videos.
>
> kerndeint is an old deinterlacer that you should only
> use if you have a specific reason. (performance on arm?)
>
> yadif is a good deinterlacer and has simd optimization
> on x86.
>
> fieldmatch is a modern inverse telecine filter that is
> said to beat MPlayer's pullup filter for every kind of
> source file (but needs more resources).
>
>> and if there is a way to automatically deinterlace /
>> inverse telecine an input accordingly?
>
> Not really because while it is technically possible to
> detect if your video is interlaced or telecined (see
> the idet filter), it is significantly easier and less
> error-prone if you do it (visually) before transcoding.
>
> Carl Eugen
>
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