DVD2avi says Interlaced, but no combing?

[Ned]

I've found this happen with the U2 - Elevations tour DVD and another concert DVD I'm doing now.

DVD2AVI says it's interlaced NTSC but I can do my .avs without any deinterlace plugin and there is no combing. I tested IVTC to decimate to 23.976 but then there is obvious stuttering (good frames being discarded).

Could the source actually be a progressive NTSC camera running at 29.97fps? When I test the deinterlace settings in Tmpeg there is no combing in the preview mode and using field even or odd causes a loss in detail and creates more jaggies. But still no combing even on obvious scenes like guitar strings being plucked.

I've done lots of other music concerts that needed just deinterlacing but these 2 have me stumped.

extra note:

Powerdvd shows tons of combing and it won't deinterlace properly when set to auto/bob/weave. Windvd however shows no combing.

[Hanty]

The possibility of it being progressive is possible. Though the reports of NTSC DVDs being such are so rare they are almost legend. have you tried just decimate(5) without telecide? 30 fps gives great smooth playback but expect the file size to be somewhat bloated, nthing I'd do for a 1 CD rip.

[DJ Bobo]

The framerate has NO influence on the file size. YOU determine the bitrate, so YOU determine the size. Just go down with the resolution a bit to get decent quality.

As about your DVD, you gotta hit F5 in DVD2AVI and watch it for a couple of minutes. If you don't see any combing, you're lucky. Encode without deinterlacing.

You may also encode to DivX without deinterlacing, if the DivX video don't have any combing, your video is definitely progressive.

[Hanty]

More frames = more content, no?
Their onscreen time is less but they are still there.
If what you say it's true then could you elaborate against that logic of mine?

...and what DVD would that be that you're ripping? I'd be interested in checking it out.

[Lord Sandwich]

@Ned

If you don't have a hardware decoder, I think your best bet would be to pop the DVD into a standalone player and see what it looks like on a TV. 29.97p is very distinct from either 23.976p or 29.97i.

[Pko]

Originally posted by Hanty
More frames = more content, no?
Their onscreen time is less but they are still there.
If what you say it's true then could you elaborate against that logic of mine?

...and what DVD would that be that you're ripping? I'd be interested in checking it out.

When you say to CCE to compress at 2200kbps a stream 10 seconds long, it will make a file of approx. 22000kb, does not matter what the framerate or the resolution is. If framerate is higher, each individual frame will be more compressed. Since MPEG is a lossy compression codec, more compression means you loose more information and so the visual quality wil be worse.

Of course, if you tell CCE not to compress at 2200 (CBR or VBR multipass), but to compress maintaining some quality factor, more information at same quality requires more bitrate.