Disaster with wrong MPlayer

[Selur]

Problem is that I need to either see the problem in the avs file that is used during the preview or need to be able to reproduce the issue.
Sadly the effect you describe doesn't happen here and the avisynth script I posted from your debug output in Post #38 shows the following (removed old comments added new once to describe what's happening):

Source = Import("/tmp/convert/merged-mp4-test.avs") # Input .avs is loaded
SourceFiltered = Source # Input is copied to SourceFiltered , so Source and SourceFiltered contain the same content
SourceFiltered = SourceFiltered.Tweak(sat=2.00) # Tweak is applied to SourceFiltered
SourceFiltered = SourceFiltered.ConvertToRGB32(matrix="Rec709") # SourceFiltered  is converted to RGB32 using the Rec709 matrix
Source = Source.ConvertToRGB32(matrix="Rec709")  # Sourceis converted to RGB32 using the Rec709 matrix
StackHorizontal(Source, SourceFiltered) # Source and SourceFiltered are stacked horizontally
return last # the stacked sources are returned

From this everything looks fine. Tweak only gets applied to the right side of the preview image.
Problem is for some reason, I do not understand and can't reproduce, the sides look the same for you.
I looked at the source code of Hybrid and [/url]avsViewer and nothing should have this effect once the above script is fed to avsViewer.

This is how I try to reproduce your issue:

1. Start Hybrid
   
2. load a source file
   
3. switch to Filtering->Avisynth
   
4. make sure Filtering->Support is set to 'Avisynth'
   
5. I look at the script by pressing 'Filtering->Avisynth->Show current avisynth script', which shows:
   
   LoadCPlugin("/usr/bin/hybrid-bin/avisynthPlugins/ffms2.dll")
# loading source: /home/selur/test.mp4
#  input color sampling YV12
#  input luminance scale tv
Source = FFVideoSource("/home/selur/test.mp4",cachefile="/tmp/mp4_064533b12340540cfe9q4ceb031df893_125145377_1_0.ffindex")
# current resolution: 720x576
return last
6. I copy and paste this script into an file I name '/home/selur/test.avs'.
   
7. I press the 'Avisynth preview' button to make sure the ffindex file gets generated and the preview works. Then I close the preview.
   
8. I load '/home/selur/test.avs' as source in Hybrid (Main->Base->Open File)
   
9. I enable 'Filtering->Avisynth->Tweak'
   
10. I set 'Filtering->Avisynth->Tweak->Staturation' from '1.00' to '2.00'
    
11. I enable 'Filtering->Filter view'
    
12. I start the 'Avisynth preview' again. (only the right side is show oversaturated here)
    
13. I look at the script inside the temp folder which is used for the preview (in my case '/tmp/tempPreviewAvisynthFile08_29_54_346_tmp.avs') and look at it's content
    
    #  input color sampling YV12
#  input luminance scale tv
Source = Import("/home/selur/test.avs")
# current resolution: 720x576
SourceFiltered = Source
# deinterlacing
# filtering
# color modifications
# Current color sampling before 'Tweak' is 'YV12'
# Supported color samplings for 'Tweak' are: 'YUY2, Y8, YV411, YV12, YV16, YV24'
SourceFiltered = SourceFiltered.Tweak(sat=2.00)
# adjust color to(2):
RGB32SourceFiltered = SourceFiltered.ConvertToRGB32(matrix="Rec709")
Source = Source.ConvertToRGB32(matrix="Rec709")
StackHorizontal(Source, SourceFiltered)
return last

-> Over here everything works like it is meant to be.

Assuming you didn't make a mistake and fed Hybrid with the already filtered Avisynth script I have no idea what is running wrong that you get the effect that you describe.

Seeing that you seem to got MeGui running and we seem to be running in circles here I would recommend to you to use MeGui.

Cu Selur