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Old 28th August 2012, 11:55   #1  |  Link
Pringles
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Megui: the output picture is always too bright!

Hi,

I'm having a problem with MeGui, each time I'm encoding something, the output image is always brighter than the original. I'm only using standard settings in MeGui, like:

LoadPlugin("C:\Program Files (x86)\MeGUI_1989_x86\tools\dgindex\DGDecode.dll")
DGDecode_mpeg2source("I:\DVD\RIP\Citesdor\DVD1\VTS_02_1.d2v")
#deinterlace
crop(10, 0, -8, 0)
Spline36Resize(720,544) # Spline36 (Neutral)
LoadPlugin("C:\Program Files (x86)\MeGUI_1989_x86\tools\avisynth_plugin\UnDot.dll")
Undot() # Minimal Noise

And for the encoder:
program --preset slow --crf 20 --output "output" "input"

DVD:


MeGui:


I'm having this problem with other DVDs:
http://forum.doom9.org/showthread.php?t=165143

How is it possible to correct this?
Thanks
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Old 28th August 2012, 12:12   #2  |  Link
Atak_Snajpera
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Do you have enabled DYNAMIC CONTRAST in graphic driver?
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Old 28th August 2012, 16:19   #3  |  Link
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I couldn't find this setting. I have an ATI card, so I'm using the Catalyst Center.

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Old 28th August 2012, 16:54   #4  |  Link
mastrboy
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Have you checked the luminance or the PC/TV scale settings in DGindex?
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Old 29th August 2012, 11:01   #5  |  Link
Pringles
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I couldn't find DGindex in MeGui or is it another program?
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Old 29th August 2012, 11:37   #6  |  Link
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That YUV->RGB setting is not used by Avisynth or MeGUI.
Think was mainly used by eg TmpGenc when reading RGB.
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Old 29th August 2012, 16:02   #7  |  Link
Pringles
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Any idea for the brighter render?
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Old 29th August 2012, 16:59   #8  |  Link
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disable everything regarding video (color vibrance and so on)
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Old 30th August 2012, 15:26   #9  |  Link
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That's what I did, did some captures and the x264 picture vs the DVD pic appears still too bright.

Here is a 30 sec sample of my DVD:
https://www.box.com/s/5663d0d8920979633013

And the result encoded by MeGui:
https://www.box.com/s/211e7328a05612ec4fd0

Settings:
Code:
LoadPlugin("C:\Program Files (x86)\MeGUI_1989_x86\tools\ffms\ffms2.dll")
FFVideoSource("I:\DVD\RIP\Citesdor\DVD2\SAMPLE\VTS_02_1_cut-012.vob", threads=1)
#deinterlace
crop(10, 0, -8, 0)
Spline36Resize(720,544) # Spline36 (Neutral)
#denoise
program --crf 18 --output "output" "input"

The picture is still too bright:
DVD:


MeGui:
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Old 30th August 2012, 16:48   #10  |  Link
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maybe its the decoder ?
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Old 30th August 2012, 21:39   #11  |  Link
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Your first file isn't a vob, is a mkv with MPEG2 video.

When MeGUI File Indexer open a VOB (or m2v) with DGIndex add some color correction with ColorMatrix.
Try with:

LoadPlugin("C:\Program Files (x86)\MeGUI_1989_x86\tools\dgindex\DGDecode.dll")
DGDecode_mpeg2source("I:\DVD\RIP\Citesdor\DVD1\VTS_02_1.d2v", info=3)
LoadPlugin("C:\Program Files (x86)\MeGUI_1989_x86\tools\avisynth_plugin\ColorMatrix.dll")
ColorMatrix(hints=true, threads=0)
#deinterlace
crop(10, 0, -8, 0)
Spline36Resize(720,544) # Spline36 (Neutral)
LoadPlugin("C:\Program Files (x86)\MeGUI_1989_x86\tools\avisynth_plugin\UnDot.dll")
Undot() # Minimal Noise
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Old 31st August 2012, 12:53   #12  |  Link
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Quote:
Here is a 30 sec sample of my DVD:
https://www.box.com/s/5663d0d8920979633013

And the result encoded by MeGui:
https://www.box.com/s/211e7328a05612ec4fd0
on my pc both look like this (NV12)


However if I force RGB32 in ffdshow both look like this

Last edited by Atak_Snajpera; 31st August 2012 at 13:00.
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Old 31st August 2012, 17:29   #13  |  Link
Pringles
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Thanks guys. tebasuna51, I'll check the script you suggested.

So Atak_Snajpera you confirm that this is only a playback matter, thanks.
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Old 31st August 2012, 18:11   #14  |  Link
vdcrim
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Quote:
Originally Posted by Atak_Snajpera View Post
on my pc both look like this [brightest capture]
On mine it's the opposite (Catalyst 12.8 with all 'improve' options off, mpc-hc with different renderers and decoders, also tried mplayer2 and ffms on AvsP).

Turning on the Catalyst options alters the result a bit, but it's still nowhere as bright as that capture.

Last edited by vdcrim; 31st August 2012 at 18:21.
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