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I've been trying for a few days to design a command line that will allow me to convert all video files '.ts' of a directory into '.mp4' files of good quality on which I will have made settings, especially on the contrast, the saturation, the volume ...

So I wrote the command line (which I will integrate later in a loop 'for'):

ffmpeg.exe -y -report -i "video-1.ts" -vf eq=brightness=-0.08:contrast=0.8:saturation=1.3 -c:v libx264 -b:v 1500k -bt 3000k -r 30 -acodec aac -ar 44100 -ab 128k -ac 1 -filter:a "volume=0.5" -async 1 -ss 00:00:00.000 -t 00:00:30.000 "video-1.mp4"

It works.

But there is something that annoys me and that I can not solve: from the moment I integrate the filter -vf where I adjust the brightness, contrast and saturation, I have a warning that appears:

deprecated pixel format used, make sure you set range correctly...

I do not understand why and I would like to understand to deepen my knowledge about ffmpeg.

I tried everything (well I think): pix_fmt, color_range, scale forced ... I even danced in slip on polka music hoping that it can help ... No. Impossible: I can not delete this warning.

Would someone have the extreme kindness to help me please?

slhck
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Willis-007
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  • Some comments: -b:v 1500k is not ideal. If you want good quality and efficient file size, use -crf 21 instead. See here for more info. I don't know what -bt is – remove it. -ac 1 should be removed unless you want mono audio? -async 1 should not be needed. – slhck Nov 20 '18 at 13:25
  • Thank you very much for your comments. I replaced -b:v to -crf : it is better :). I want mono audio, right. -async : If i don't use it, I have some audio error and some crash in the vidéo – Willis-007 Nov 20 '18 at 13:59

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