[FFmpeg-user] Need help to find "proper" way to get deinterlaced 1080p30 from lossless and 1080p60 sources.

[Andrey Aleksandrovich]

Try to do some screenshots or dynamic scenes - you will see it's
interlaced/progressive/telecined.

On 12/6/13, Timur Zaripov <zaript at gmail.com> wrote:
> Hello everyone!
>
> I spent quite a bit of time trying to wrap my head around
> interlacing/deinterlacing, but can't seem to get any clarity on an issue.
>
> Practical problems I am trying to solve are:
> - encoding lossless lagarith 1080p30 source to x264 1080p30 which
> guaranteed to have progressed frames (as youtube requires);
> - re-encoding 1080p60 x264 encoded Nvidia Shadowplay source in the same
> way.
>
> Main issue I have is that I can't tell if original sources are interlaced
> or not and if they are not, than may be I am just wasting time and
> resources using -deinterlace option?
>
> Command line I am using to encode looks like this:
> ffmpeg.exe -i %1 -map 0:0 -c:v libx264 -crf 18 -preset slow -pix_fmt
> yuv420p -deinterlace -r 30 -map 0:1 -c:a copy %targetVid%
>
> Any help will be appreciated.
>
> WBR,
>     Timur Zaripov
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