[FFmpeg-user] ffmpeg Changing Video Levels
Carl Eugen Hoyos
ceffmpeg at gmail.com
Thu Jan 2 01:17:30 EET 2020
Am Mi., 1. Jan. 2020 um 23:48 Uhr schrieb Chris via ffmpeg-user
<ffmpeg-user at ffmpeg.org>:
> Is there a way for ffmpeg to encode video without altering the video levels?
> I know about full- (0 - 255) and limited- (16 - 235) range video. I am working
> on a C program to modify video levels, using ffmpeg to read video frames
> into my program and to write them out. No matter what I do, ffmpeg modifies
> the output video levels to either 16 - 235 or 0 - 255 and this defeats what I'm
> trying to do. Is there any way to defeat this behavior in ffmpeg?
If you want to use the libraries, there is another mailing list for
If you can reproduce your issue with ffmpeg (the command line utility) please
provide the command line together with the complete, uncut console output
so we have a chance to understand your issue.
PS: FFmpeg's v210 encoder surprisingly limits the video levels, if you
want to change this, you have to edit the FFmpeg source code.
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