Help on a script that fix color only to specific frames of the video

[Altruo]

Hello

I like to get some advice on how to write a script in avisynth, that fix the color only to specific frames of the video, and by using some virtualdub filter to fix that color. Is it possible ?

Let say that I want to fix the color from the frame 22000 to 25000, and not touch the rest, how do I do that ?
I know how to fix the colors, I have the numbers for those virtualdub filter So I dont need advise on the filters nor the numbers, but just how to use the virtualdub filter to fix color from one specific frame to an other.

These are the plugins I'd like to use in my script

FFVideoSource(source="C:\Users\Cartoon.mkv")

#To be applyied only to a certain numbers of frame (ex:frame 22000 to 25000)
ConverttoRGB32()
LoadVirtualDubPlugin("C:\Users\Virtualdub\Plugins\ ColorMill.vdf", "ColorMill")
ColorMill(25954, 25187, 25954, 24412, 25697, 23650, 25956, 24420, 25956, 25188, 25697, 25700, 25700, 1129, 8197)
LoadVirtualDubPlugin("C:\Users\Virtualdub\Plugins\ COLOREQU.VDF", "CEQ")
CEQ(256, 256, 256, 0, 0, 0)
converttoYV12()

#continuing normal process
TemporalDegrain(degrain=3, ov=4, blksize=16)
Hysteria()



Thank you for your time, it is really appreciated

[amaipaipai]

Without a sample, it's quite hard to "imagine" a way to help you out, there are hundreds of colors issues we can think of.
Send a screenshot, a few seconds video...

[Altruo]

I know how to fix the colors, I have the numbers for those virtualdub plugins. What I want is to apply those filter to a specific numbers of frame. Ex from the frame 22000 to 25000, I want those filter to be apply, but not the rest of the video. So basically I like to know what to write in my script to make those filter work from one frame to an other, exclusively.

[jagabo]

Let say that I want to fix the color from the frame 22000 to 25000, and not touch the rest, how do I do that ?

One way:

# assuming last
part1 = Trim(0,21999)
part2 = Trim(22000,25000).FixColor()
part3 = Trim(25001,0)

part1++part2++part3

Another way:

# assuming last
fixed = Fixcolor()
ReplaceFramesSimple(last, fixed, Mappings="[22000 25000]")

http://avisynth.nl/index.php/RemapFrames

[Altruo]

Good thank you Jagabo!

Just a quick question, because I am confuse where I should load the virtualdub filter in all this?

part2 = Trim(22000,25000).LoadVirtualDubPlugin("C:\Users\Virtualdub\Plugins\ COLOREQU.VDF", "CEQ"). CEQ(256, 256, 256, 0, 0, 0) ?

Or do I need to load the filter higher in the script and then use the "part2 = Trim(22000,25000). CEQ(256, 256, 256, 0, 0, 0)"

Sorry about that question but I am not use to call virtualdub plugins

Thank you

[johnmeyer]

My advice is to do this in your NLE. It is much better suited for cutting the video into scenes, and then do your color grading scene-by-scene.

[themaster1]

sony vegas v12 and later has an excellent plugin called Color Match, that's what you need otherwise with avisynth plugin color like i believe

[jagabo]

where I should load the virtualdub filter in all this?

part2 = Trim(22000,25000).LoadVirtualDubPlugin("C:\Users\Virtualdub\Plugins\ COLOREQU.VDF", "CEQ").CEQ(256, 256, 256, 0, 0, 0) ?

Or do I need to load the filter higher in the script and then use the "part2 = Trim(22000,25000). CEQ(256, 256, 256, 0, 0, 0)"

You can't load it as you indicated in red because LoadVirtualDubPlugin() doesn't handle video, it simple makes the CEQ() function available. Load the plugin elsewhere in your script. I usually do all such imports at the top of the script. Then yes, it's called as you wrote (bolded). I don't have that VirtualDub filter so I don't know if those parameters are correct.