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View Full Version : avisynth chroma correction filter order.


troy
29th April 2004, 21:25
I captured some video from my minidv cam with premiere. I then cut and exported the movie with no recompression to an avi file. I changed the fourcc of this file from dvsd to cdvc to use the mainconcept codec with avisynth. I used the following two scripts and I can not see any difference between the two scripts m2v video outputs.

Script1:
Avisource("D:\test\finalavi_no_recompress.avi")
converttoyuy2(interlaced=true)
fixbrokenchromaupsampling()
doubleweave().selectodd()
ConverttoYuy2()

Script2:
Avisource("D:\test\finalavi_no_recompress.avi")
doubleweave().selectodd()
ConverttoYuy2()

Did I put the order of the filters in script1 correctly. Should I see a noticable difference on the ouput m2vs for these two different scripts.

troy
1st May 2004, 15:22
wow no one has any ideas about this. I am mainly interested in the order of these commands. Does it matter what order they are in.

converttoyuy2(interlaced=true)
fixbrokenchromaupsampling()

Also I was thinking about using reinterpolate411() command. Is this likely to help and where would I put this command if I was going to use it.

Mug Funky
2nd May 2004, 16:50
load the file in virtualdub and check it's colourspace.

if it's in a yuv format, there's no need to fix chroma upsampling.

(also, you can use ffdshow for DV decoding if you like... that will decode to YV12, making chroma upsampling a moot point)