DVD->SVCD for display on TV: Do I need to deinterlace?

[DRP]

What is the Deinterlace filter in TMPGEnc for? Do I need to use it if I'm ripping an interlaced VOB from a DVD and converting it to an interlaced SVCD for display on a conventional 4:3 TV?

[Ripper2860]

Nope. No need to De-interlace unless your TV and DVD player supports progressive scan. While many DVD players do support progressive scan output, most conventional TV's do not have progressive inputs.

If you were to play it with a PC and view it on a PC monitor -- then de-interlacing of an interlaced source would be required as a PC/monitor is a progressive scan device.

Rule of thumb ...

Capture Interlaced/Deinterlaced according to the source and encode Deinterlaced/Interlaced according to the viewing device. Since the TV is interlaced -- do not de-interlace.

Definitions:

Deinterlace: https://www.videohelp.com/glossary#Deinterlace
Interlace: https://www.videohelp.com/glossary#Interlace

[DRP]

Nope. No need to De-interlace unless your TV and DVD player supports progressive scan. While many DVD players do support progressive scan output, most conventional TV's do not have progressive inputs.

If you were to play it with a PC and view it on a PC monitor -- then de-interlacing of an interlaced source would be required as a PC/monitor is a progressive scan device.

Thanks for the answer. On this last sentence you wrote, I don't really understand. I haven't done any deinterlacing as yet but when I watch the interlaced DVDs I've ripped as VOBs to my HDD with PowerDVD on my computer monitor they seem fine to me. I can't see combing effects or anything that looks out of the ordinary. Why is this? According to what you've said here, I should be seeing nasty effects from watching an interlaced source on my computer monitor - yet I don't (at least when playing with PowerDVD).

Thanks.

[Innershield]

That's because PowerDVD deinterlaces on the fly to be view on your monitor..