[FFmpeg-user] HD > SD Down-Convert Prores Color

[James Heliker]

On May 9, 2015, at 1:54 PM, Kevin Wells <kevwells at hotmail.co.uk> wrote:

>>> -vf format=uyvy422,colormatrix=bt709:bt601,scale=720:576:flags=lanczos
>> 
>> This can't be correct unless you know (tested) 
>> something I don't know (didn't test).
> 
> This is the closest I can get, if I emit the format=uyvy422 then the output file contains tiny green artefacts (easily visible my applying a gamma filter in FCP and turning it right up).What's the answer here then to down-convert from HD Prores HQ to SD Prores HQ?            

I didn't know you could encode Apple Prores with FFmpeg. If that is possible I too would like to know how!


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