Working with Interlaced Video

[Torrential]

I captured some material using my capture card. I want to burn it to DVD. I capped it using Huffyuv AVI. The reason for AVI Capture was I need to do some filtering with AVISynth and TMPGEnc. How do I filter in AVISynth and preserve the interlacing? Do I just apply the filters or is there a special way I need to do it? I know I shouldn't deinterlace and then apply filters because Deinterlacing throws away parts of the picture and causes incorrect display on TV.

[junkmalle]

Some filter have an interlace mode. With others you should pull the two fields apart with Bob, apply the filters, then Weave them back together.

[Abond]

The easiest way is to use JDL fuctions called JDL_UnfoldFieldsVertical and JDL_FoldFieldsVertical.
The use is
JDL_UnfoldFieldsVertical()
Your filters here...(+ resizing)
JDL_FoldFieldsVertical()
For more information and the functions:
http://forum.doom9.org/showthread.php?t=86394&page=3&pp=20
http://www.avisynth.org/stickboy/jdl-interlace.avsi
And you need another function for both to work, called SetParity
http://www.avisynth.org/stickboy/jdl-util.avsi
Good luck.

[junkmalle]

Or SeparateFields and Weave:

SeparateFields()
Filter....
Weave()