De-Interlacing Questions?

[pp05629]

Greetings...Are there any cases when I should not de-interlace? It seems that if I encode as MPEG1 and do not interlace, I always seem to get combing artifacts. If I de-interlace, encode as MPEG-1, and burn...it seems to look OK. I normally capture AVI clips from my Digital and Analog CamCorders as 720x480 and 704x480 respectively. Should I always de-interlace? I am ultimately going go the DVD burning route, so if I encode as MPEG-2, do I still need to de-interlace?

Any advice would be appreciated

[Jestorius]

Mpeg2 is interlace.
For Mpeg1 I use deinterlace, interpolation. It makes a motion blur effect and looks good on the tv.

[Sulik]

MPEG2 supports interlaced content as well as progressive (MPEG1 is only progressive).
You typically will get better results with deinterlacing turned on even for MPEG2 at low bitrates (SVCD).

[Jestorius]

Sulik,

Are you using Tmpgenc (2.5 ???) for encoding? If yes, what kind of deinterlacing are you using for SVCD?

[Sulik]

I do most of my captures in MMC 7.5, since it has a very good deinterlacing (better than TMPGENC).

I personally don't really care for TMPGENC (don't flame me).
Even with 2-pass VBR or CQ VBR, the quality of I-frames is very good, but B frames are very bad, and P-frames somewhere in the middle.

I found the VBR in MMC better at keeping a constant quality accross all frames. The only advantage I see in TMPGENC or other non-realtime encoders is the possibility to use preprocessing filters.