HELIX codec with CCE

[freelock7]

With this yv12 codec I have good results with interlaced sources without the <converttoyuy2(interlaced=true)> at the end of the script. Colors conversion seems to be better.
What do you think?

[Amnon82]

Helix? I don't remember the name. Have You a link for it? And for what source do You use it?

[buzzqw]

is the decoder for yv12 that Karl (and DarkCracker) published sometime ago.

BHH

[freelock7]

Here the link

http://forum.doom9.org/showthread.php?s=&threadid=56972&highlight=helix+codec

Xvid codec (NIMO codecs f.e.) can do the job too but to avoid conflict I desinstalled them to let only HELIX codec.
RB mentionned them in the CCE FAQ.

"However, one possibility to feed YV12 directly into CCE is some external codec that decodes YV12 data for it. This seems to work reliably only with CCE-SP 2.67.00.10 and newer, both DivX and XviD should do the job, as well as the lite version of the ffvfw codec included in the latest AVISynth 2.5 installers. In my tests however (using the ffvfw codec) and others, there seems to be not any difference in speed or even decreased speed compared to a ConvertToYUY2() in AVISynth. Also, the externals codecs may assume progressive video (at least DivX and XviD do) and mess up chroma for interlaced video for reasons outlined above. So for the time being, my advice is to stick to the conversion in AVISynth, eliminating another source for possible problems by minimizing the number of video processors involved."

But according to RB the Chroma Upsampling Error remains with these codecs-the HELIX too.
The <converttoyuy2(interlaced=true)> seems to be actualy the only solution.

[freelock7]

I found this script to let the HELIX codec working with interlaced source AND it correct chromaupsample too:
ChromaShift(C=-2,L=2)
With this plugin the chromaupsample is corrected without any color conversion by avisynth.

A second solution can work too but I have to convert to yuy2 by avisynth before:
converttoyuy2()
FixBrokenChromaUpsampling()

Beautiful results in both cases.