wackman
23rd November 2005, 11:06
Hey all,
I used to use pretty much just tmpeg for avi->mpg2 conversions. For the last couple of months, I've been using Avisynth and Quenc. So far, they've only been the simple:
AviSource("movie.avi")
LanczosResize(720,480)
ConvertToYV12
A lot of the dvd rips I convert seem rather dark on my monitor, so I want a way to tweak the brightness/contrast levels. Tonight, I found on another post, the following line:
colorYUV(gamma_y=64, gamma_u=68, gamma_v=72, off_y=-4, gain_y=-8)
I know those values are not necessarily going to work everywhere, but it seemed good for the conversion I was doing, so I ran with it. Now, I'm trying one movie which is RGB32 colorspace. I can't use that line or play around with it because it says that colorYUV doesn't support RGB32. I'm having trouble finding anything comparable.
One thing I like about Tmpgenc (I'm using the 2.5x version) is the simple color correction. I'd like a way I can just find my brightness/contrast/gamma values and plug them into a line in my avs.
I don't necessarily need a long explanation or anything. If there's any links the gurus could send me to figure all this out, that'd be great.
Also, one more barely related question. A long time ago, I learned how to read histograms (eg: tmpgenc's custom color correction). I have since forgotten how. On a histogram, do I want there to be peaks on the ends? Do I want to get it as close to flat as possible? Do I want to adjust so the middle comes up? ???
Thanks for any and all help.
Wackman
PS: These conversions are for burning to dvd to play on my standalone player. I used to get over zealous and end up with what would look fine on my monitor, but overly bright (almost 'shiny') on my tv. I just thought I'd throw that in.
I used to use pretty much just tmpeg for avi->mpg2 conversions. For the last couple of months, I've been using Avisynth and Quenc. So far, they've only been the simple:
AviSource("movie.avi")
LanczosResize(720,480)
ConvertToYV12
A lot of the dvd rips I convert seem rather dark on my monitor, so I want a way to tweak the brightness/contrast levels. Tonight, I found on another post, the following line:
colorYUV(gamma_y=64, gamma_u=68, gamma_v=72, off_y=-4, gain_y=-8)
I know those values are not necessarily going to work everywhere, but it seemed good for the conversion I was doing, so I ran with it. Now, I'm trying one movie which is RGB32 colorspace. I can't use that line or play around with it because it says that colorYUV doesn't support RGB32. I'm having trouble finding anything comparable.
One thing I like about Tmpgenc (I'm using the 2.5x version) is the simple color correction. I'd like a way I can just find my brightness/contrast/gamma values and plug them into a line in my avs.
I don't necessarily need a long explanation or anything. If there's any links the gurus could send me to figure all this out, that'd be great.
Also, one more barely related question. A long time ago, I learned how to read histograms (eg: tmpgenc's custom color correction). I have since forgotten how. On a histogram, do I want there to be peaks on the ends? Do I want to get it as close to flat as possible? Do I want to adjust so the middle comes up? ???
Thanks for any and all help.
Wackman
PS: These conversions are for burning to dvd to play on my standalone player. I used to get over zealous and end up with what would look fine on my monitor, but overly bright (almost 'shiny') on my tv. I just thought I'd throw that in.