-----Original Message-----
From: Carl Eugen Hoyos <ceffm...@gmail.com>
To: FFmpeg user questions <ffmpeg-user@ffmpeg.org>
Sent: Tue, Jan 21, 2020 11:03 am
Subject: Re: [FFmpeg-user] Submitting a Feature Request
Am Di., 21. Jan. 2020 um 19:33 Uhr schrieb Chris via ffmpeg-user
<ffmpeg-user@ffmpeg.org>:
> FILE *pipein = popen("ffmpeg -i C0015.MP4 -f image2pipe -vcodec rawvideo
> -pix_fmt rgb24 -s 1280x720 -", "r");
> FILE *pipeout = popen("ffmpeg -y -f rawvideo -vcodec rawvideo -pix_fmt rgb24
> -s 1280x720 -r 59.94 -i - -f mp4 -q:v 5 -vcodec rawvideo -pix_fmt rgb24 -an
> output.avi", "w");
(Complete, uncut console output missing)
Which of those two commands (why are there two?) changes the video level?
I don't think they are supposed to change the level...
Carl Eugen
My last message contained a comment line which explains why there are two
command lines:
// Open an input pipe from ffmpeg and an output pipe to a second instance of
ffmpeg
One is an input pipe for reading video frames; the other is an output pipe for
writing video frames.
The output pipe is the one modifying the video levels I have written in the C
program.
out_range=full causes ffmpeg to force video levels to 0 - 255.
out_range=tv causes ffmpeg to force video levels to 16 - 235.
I want an option for ffmpeg to leave the video levels alone: out_range=unity.
How do I submit this feature request?
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