Resample Chroma

[Mounir]

Is there a filter to achieve a similar effect explained on this article to resample chroma:

http://imageupload.org/?d=3D9B0C481

the video i work on is vcd mpeg1 so that would be useful i believe

edit:
Virtualdub has such filter it appears but it's internal (can't load it in avisynth)

[Gavino]

It's not clear to me what you want to do (part of the text in your linked image has been cropped off the right), but perhaps using the chromaResample, chromaInPlacement and chromaOutPlacement parameters of the Convert (http://avisynth.org/mediawiki/Convert)XXX functions in v2.60 will help.

[TheSkiller]

If got it right then that page is just about using something more advanced than point-resampling for chroma. Yeah, the right side is cropped off.

If you're dealing with MPEG1 the chroma placement of the source will be different from MPEG2/MPEG4 sources.

In 2.6. you would deal with it like this for example:

ConvertToxxx(ChromaInPlacement="MPEG1")


You can also specify the resizer to use by adding ChromaResample="whatever".


Edit: But don't worry, unless you specify so, point-resampling is never used, this is more a problem of the non-AviSynth world. ;)