Gamma changes after x264 encode

[nekostephan]

Hello there everyone.

The problem is:
After I rip an anime DVD, index it and demux and finally encode it overall gamma somehow gets boosted.

This seems pretty strange since I didn't specify anything about it anywhere. I checked my ffdshow decode settings - any postprocessing was switched off.
When I launch my VOB it looks just fine.

Anyone can tell how to get rid of it? I personally would like to tune gamma a little, but not overlighten it that much.

The software I used is:
DVDDecryper for ripping
DGIndex for indexing and demuxing
Notepad to write the script
meGUI for encoding to x264
Media Player Classic for playback

Maybe this 'll be of some help, so here is my AVS. Though I believe it to be irrelevant.
# Script for SKU
LoadPlugin("D:\PROGRA~1\coding\GORDIA~1\DGMPGDec\DGDecode.dll")
LoadPlugin("D:\PROGRA~1\coding\GORDIA~1\AviSynthPlugins\decomb.dll")
LoadPlugin("D:\PROGRA~1\coding\GORDIA~1\AviSynthPlugins\UnDot.dll")

mpeg2source("D:\21_23_DARKNESS_B\VIDEO_TS\21.d2v")
Telecide(order=1,guide=1)
crop(10,0,700,476)
LanczosResize(640,480)
Undot()

Any help appreciated.

[check]

what video renderer are you using on playback?

[nekostephan]

CoreAVC

[check]

sorry, i mean the output renderer, not the decoder. in MPC, you can check by looking in options -> playback -> output -> directshow video. in zoomplayer: options -> advanced -> filter control -> standard playback. If you don't use one of these players look aorund for a setting that has either overlay or VMR/7/9 options.

[nekostephan]

Ahw, sorry, I misunderstood you. I use VMR9 renderless.

[check]

that will be the cause then - it is scaling your output colour levels to 16,235 instead of keeping them at 0,255. The solution is to use a video render designed for output onto a monitor, which is Overlay or Haali's.

[nekostephan]

Thank you, it worked well with overlay mode ^_^