CCE-SP3 to pre-process deinterlace or not?

[Toastie]

I have some video shot with an NTSC camcorder (29.97 and interlaced of course). I now have it as a mpeg-2 file, but it is too big to fit on a standard DVD-5. So I am going to use CCE to re-encode it to fit on the disc.

My approach:

1. Use DGIndex to demux the audio and video, make the index file.

2. AVISynth script:

LoadPlugin("C:\Program Files (x86)\DGMPGDec\DGDecode.dll")
MPEG2Source("D:\DVDs\demuxed \2011-03-12.d2v")
ConvertToYUY2(interlaced=true)

3. load the script into CCE with these settings on the main screen: MPEG-2 for DVD, 5 pass VBR, NTSC, Elementary, 16:9, 29.97, no pulldown, VBR rate set so it will fit easy on a DVD-5

4. re-mux the audio and CCE's re-encoded video

5. author and burn.

Question is that CCE has an option on the main screen with a check box called "Pre-process Deinterlace". Should I check that box so CCE does a deinterlace first - or leave it alone (un-checked, leave it interlaced)??

If the video should be deinterlaced first, is it better to do that witht another line in the avisynth script - or let CCE do it?

The source video is interlaced to start, is not being resized, trimmed, etc - just reencoded to reduce the file size down a bit.

Goal is a standard DVD to play back on an old CRT NTSC tv set.


Thanks in advance!

[SLK001]

Leave it interlaced. Also, 5 passes is way overkill. Stick with 3 passes.