[FFmpeg-user] In and out-range Scale option able to correct 0-255 video to 0-235?

Carl Eugen Hoyos cehoyos at ag.or.at
Tue May 19 23:06:05 CEST 2015

Christoph Gerstbauer <christoph.gerstbauer <at> gmail.com> writes:

> C:\Windows\System32>ffmpeg -i
> C:\Users\Administrator\Desktop\big_buck_bunny_ffvhuff.avi -vf
> "scale=in_range=full:out_range=tv" -vcodec ffvhuff

It seems to me that the scale filter is so smart 
that it doesn't scale if the input and output 
resolution and input and output colourspace 
are identical.

Even worse, both the filter and the software 
scaler are smart enough to skip actual scaling, 
so fixing the issue in the scale filter is not 

I am not 100% sure if this is a bug, but it 
seems so;-)

(Please try to understand that I had no idea 
what you are talking about until seeing your 
- imo sensible - command line.)

I hope you mean "to correct 0-255 to 16-235".

Carl Eugen

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