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Problem with colors

Discussions about problems encountered using ffmpeg.
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Problem with colors

Postby ExpBones » Thu Aug 10, 2017 1:29 pm

Hi.
I have a raw source file (mov)
Image

I need mp4 HD. I do the same output with different programms: TMPGEnc, Adobe Encoder, ffmpeg 3.3.3
And there isn't any difference in colors between TMPGEnc's and Adobe Encoder's output files.
But ffmpeg changes colors. Why?
Image

my command line:
ffmpeg.exe -i input.mov -c:v libx264 -r 25 -profile:v main -level 4.1 -vf format=yuv420p -b:v 10M -s 1920x1080 -y output.mp4

I cann't find any global differnce in mediainfo of all output files
Media info all output files
Image
Please help.
ExpBones
 
Posts: 2
Joined: Tue Aug 08, 2017 3:32 pm

Re: Problem with colors

Postby ExpBones » Fri Aug 18, 2017 11:36 am

One more an intersting history...
I have input file mov raw 1080p. I did 3 output mp4 files with difference picture size 1080p, 720p, 576p

Command line:
"C:\ffmpeg\bin\ffmpeg.exe" -i input.mov -c:v libx264 -b:v 5M -s 1920x1080 -y "C:\ffmpeg\bin\output_1080.mp4"
"C:\ffmpeg\bin\ffmpeg.exe" -i input.mov -c:v libx264 -b:v 5M -s 1280x720 -y "C:\ffmpeg\bin\output_720.mp4"
"C:\ffmpeg\bin\ffmpeg.exe" -i input.mov -c:v libx264 -b:v 5M -s 1024x576 -y "C:\ffmpeg\bin\output_576.mp4"

Please look at the result

Image
Image
Image

Why colors were changed in 720 and 1080 cases and didn't change in 576 case ?
ExpBones
 
Posts: 2
Joined: Tue Aug 08, 2017 3:32 pm


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