Deinterlace method ?

ghosty6 wrote on 6/25/2004, 1:55 AM
In the Project properties, there is an option for Deinterlace method.
Should this be set to None ?

The reason I ask is that that my footage is interlaced(DV) and I will rendering for DVD to watch on Normal TV. When I render in Procoder I always use interlaced with top field first.

Should the above setting only be used when you want to render in progressive ?

Comments

jaegersing wrote on 6/25/2004, 2:10 AM
I've found it makes a difference when I have some clips with speed change applied. Some clips look better with blend fields, other with interpolate fields. For cuts and dissolves of DV source material at normal speed, I would usually leave it set to none, but I suspect it has no effect in this case anyway.

Richard Hunter
farss wrote on 6/25/2004, 2:45 AM
Unless Vegas needs to de-interlace or merge fields it makes no difference. This may happen with velocity envelopes and frame rate changes. And by the way all video that goes into a TV should be lower field first.
kerrying wrote on 6/25/2004, 3:34 AM
Take note that you are able to specify a deinterlacing method in Project properties, media properties and within the Render as [custom] window (when you render to MPEG2, let's say), so, I reckon, while they look simply like different places from which you may specify one same setting, I suspect they may be different. Someone maybe can help confirm this.

Specifying a deinterlacing method in Project properties window tells Vegas how to handle your source footages, while specifying a deinterlacing method in custom widow, allows you to specify field order (setting a flag) in the final output.

Depending on how your capture card capture footages, you may have to set the field order to upper field first sometimes.
erratic wrote on 6/25/2004, 6:57 AM
Yep, upper field first works just fine on a TV. I've often used upper field first video. I've converted it to upper field first MPEG-2 and authored it that way. It plays just fine in my standalone DVD player. There's nothing wrong with upper field first.

By the way, Cinemacraft Encoder always creates upper field first MPEG-2 files. If you supply lower field first video (DV) it line-shifts to change the field order to upper field first. The default setting in Canopus ProCoder for DVD is upper field first. Canopus claim that upper field first is more compatible with some (probably older) DVD players. In ProCoder you can easily change that setting however.

This is a quote from someone in the Canopus ProCoder forum:
This was discussed a while back, essentially DVD players are supposed to handle either upper or lower field first. However, we have found that upper field first encoded MPEG tends to have less problems, thus we have the target set for that. ProCoder will automatically fix the field order.