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Mr.Ash
Member
Joined: 06 Mar 2004
Location: Switzerland
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Cause there's no answer in the general discusion i post my suggestion here.
As the title says, there's a greentouch in the videopicture everitime i encode a video with ffmpegX. I haven't noticed this a long time but it's realy true! The picture has clear colours before the encoding, but after the process it has a clear visible greentouch all over the picture. It doesent matter witch movieplayer (QT,VLC,MPlayer...) is use, the greentouch ist always visible. I tried to reinstall ffmpegX but that doesen't solved anything. The ffmpeg and mencoder engines produces the worst greentouch of all. This can't be normal can it?
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Toche
Member
Joined: 22 Jun 2003
Location: Belgium
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Could you post more details and may be post some screenshots?
Do you encode in mpg1, mpg2, divx, xvid, etc... ?
I've had a greentouch in the past with mencoder engine when i converted some black&white DVD to xvid... But i think the problem has been resolved...
For me, the problem is a first green frame on every mpg1 and i've no answer 
Toche
_________________
Ti 867 MHz - 768 Mo - Airport - 10.3.4
ffmpegX 0.0.9m [REG]
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Mr.Ash
Member
Joined: 06 Mar 2004
Location: Switzerland
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No this greentouch presists always no green frames or something. Here's a sample picture. I've encoded a .mov to divx .avi using the ffmpeg engine. The left picture shows the origina and in th right picture you can see this slight greentouch.
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Toche
Member
Joined: 22 Jun 2003
Location: Belgium
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Sorry but i don't see the greentouch...
If i take a 5x5 points sample in the background:
LEFT:
R=230
G=230
B=230
RIGHT:
R=251
G=248
B=254
So it's more magenta... 
I can't help you... sorry..
Toche
_________________
Ti 867 MHz - 768 Mo - Airport - 10.3.4
ffmpegX 0.0.9m [REG]
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Mr.Ash
Member
Joined: 06 Mar 2004
Location: Switzerland
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I don't use this technical stuff to discribe a picture. I trust my eyes and what i see. Everyone i asked about this said that the right picture has a slight greentouch. Don't you see this by yourself? Trust your eyes!
The only thing i wonder is why? Why doesn't ffmpegX produce a picture with the same colours as the source? Why change them?
It doesen't matter what those test tools results are, the eye can see the difference very clearly.
I switched my test movie to black/white and encoded it again. If you don't see the greentouch now then you must be blind.
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Toche
Member
Joined: 22 Jun 2003
Location: Belgium
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I'm not blind 
It's more visible on the B&W.
Remember that ffmpegX is just a GUI, so maybe try with an other application that use ffmpeg engine to be sure that's a ffmpegx's problem.
_________________
Ti 867 MHz - 768 Mo - Airport - 10.3.4
ffmpegX 0.0.9m [REG]
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Mr.Ash
Member
Joined: 06 Mar 2004
Location: Switzerland
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Sorry for the blind stuff. I'm aware of it that ffmpegX is just a GUI. But the same happens when i use the mencoder engine. When i use mencoder for itself, there's no greentouch. Also the mpeg2enc engine doesen't produce this green stuff. Witch tool uses the ffmpeg engine too, so i can test it.
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