[FFmpeg-user] Slight blur on converted video

chronek chronek at interia.eu
Thu Mar 23 19:22:56 EET 2017

We still do not know what is his colorspace of input video, if it is 
only yuv420p then conversion to prores_ks profile:v 1 (yuv422p10) will 
be losy, not to mention that prores is itself losy, why not use native 
yuv420p? If you really need change codec why not use utvideo it can 
loseless yuv420,yuv422,yuv422p10,rgb,rgb10,etc.... or just use avisynth 
scrypt and load direct to AME...

+full_chroma_int flag show that you doing conversion of colorspace

W dniu 2017-03-23 o 18:12, Erik Dobberkau pisze:
>> ffmpeg -y -i in.mxf -r 25 -vf settb=1/25 -flags +ilme+ildct -timecode
>> 00:00:00:00 -acodec pcm_s16le -filter_complex "[:1:a][:2:a]amerge=inputs=2[aout]"
>> -map "[aout]" -map 0:0 -qscale:v 6 -vcodec prores_ks -profile:v 1
>> -video_track_timescale 25 -copytb -1 out.mov
> This will give you ProRes LT, I suppose this is intended? Do you also
> generate the same format (i.e. resolution, scan, bitrate/profile) from AME?
>> MP4 Conversion:
>> ffmpeg -y -i in.mp4 -acodec pcm_s16le -vcodec prores_ks -profile:v 1 -vf
>> scale=interl=1 -sws_flags full_chroma_inp+full_chroma_int -copytb -1
>> out.mov
> Same here, and did you test if removing the +full_chroma_int flag made a
> difference?
> Erik
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