encoded SVCD video is jerky even after Field Order change

[C0G0N3]

I have encoded many of my (NTSC) DVD home movie collection into SVCD without too many problems. Everything is going smooth thanks to the info I read here.

However I am getting a problem I haven't encountered before.
After encoding the video playback is jerky (not INTERLACED at all). This occur's when I play it on my PC or on the Standalone.

The SVCDInfo.txt tells me DVD2SVCD performed a IVTC on the video. (I have the DVD2AVI tab set to [x] Automatic)
I check the video in DVD2AVI and it indeed has 2 interlaced fames followed by 3 progressive frames. No Interlace problems though...

Just for the fun of it I ran DVD2SVCD again but this time selected the [x] Force Film box and tried again only to get the same jerky results. No Interlace problems her either (forcefilm seems to remove the interlace frames as well as IVTC)

I read the forum and saw info that this may be a Field order problem.
I checked the SVCDInfo.txt and saw that SVCD2SVCD was not selecting the upper field first. (Upper field first: No)

I tried again but this time selected "Field Order: Top Field First (A)" under the encoder tab.
I then reset the DVD2AVI tab to [x] Automatic.
The resulting encode still turned out jerky despite the SVCDInfo.txt stating: Upper field first: Yes

Like a dumbass I tossed my mpeg/m2v/mp2 files so I cannot fix them now. I'd have to re-encode. I'm not even sure if the m2v before the pulldown plays jerky or not, cause I tossed it :(

My question is,... How can I fix this within DVD2SVCD (v1.09 build 3)?

And if I cannot fix it, can I do a correct pulldown with another program like "ReStream" etc, assuming the non-pulldown m2v plays ok? and if so how?


I am thirsty for your knowledge...

[Kedirekin]

Sounds like you may have a title that can't be inverse telecined. It may be mixed footage (24 fps telecined cell animation mixed with 30 fps CGI animation for example) - that would explain why you found the 2/3 pattern but still can't IVTC it.

Your only choice is probably to encode it as 30 fps and not apply pulldown (and hope that it doesn't have changing field order).

Incidentally, the 'wrong field order' problem can't really occur with progressive 24 fps video, including properly done IVTC. It's part of the way pulldown works; fields from later frames will never play before fields from earlier frames. Since the underlying footage is progressive you never get the temporal forward/back/forward that manifests as jerkiness.

Also, how did you check for the 2/3 pattern in DVD2AVI? In my experience, preview (F5) in DVD2AVI is far too fast to be able to see the pattern, and using the jump (right cursor) button only shows I frames, so again you can't see the pattern.

[C0G0N3]

yeah I made a project and went through it 1 frame at a time in VDub..

It's a Documentary, no anime or CG.

[Kedirekin]

Typically in a documentary, the interview and commentary portions are recorded using TV or DV cams, and are 30 fps interlaced. The documentary may intermix clips from film, and the clips are telecined. As with mixed cell/CG animation, the end result is mixed footage that can't be inverse telecined.

[hendrix]

ya..i make documentaries here in japan and i shoot with the panasonic ag-dvx100 at 24p and use a lot of interlaced file footage.
and during dvd authoring we mix interlaced and progressive clips together - it's easier.

you may need to demux the dvd per vobid - and encode accordingly - progressive and interlaced, it's a pain but the end result is eye candy...hope this helps