Interlace problem has be baffled!!!

[dvddog]

I am trying to produce my own DVD-R's from a JVC MiniDV Camcorder but I am having a problem with interlacing. My problem is that when I play my DVD-R on my APEX 1100W or Bose 321 DVD player, the picture is great, no problems. But when I brought my Sony DVP F21 to my inlaws this weekend, my DVD-R had the jitters. The resolution was fine and there was no block noise, but the picture just jittered badly mostly in high motion scenes. It looks like the field order is incorrect to me but this is a guess. I brought it back home and A-B the DVD players and sure enough, the Sony had the jitters.

How is this possible?? Can the DVD player actually change the interlacing order, or am I missing something else??

Are there any tools to view detailed MPG info such as interlace method and such? I have not had any luck finding anything after looking at the Tools section on this site. AVIsynth looks like it can but I haven't figured out how to use it yet.

This is my work flow:

- Capture AVI from JVC DVL520U to HDD with Pinnacle Studio 7 and firewire at full DV quality.
- Edit/Produce with Studio 7 and create (Make Movie) at full DV quality AVI file using defaults.
- Encode with TMPGEnc 2.57.41.146 using DVD NTSC template and changing to "non-interlace" under Video/Encode Mode
- Author with SpruceUp and create VOBs on HDD.
- Burn to Pioneer A04 with Pioneer/Veritas RecordNow DX.
- Done (Finally)

Any help would be appreciated.

[Poplar]

It's an interesting problem. Maybe it's player related, since it plays great on two DVD players. The tool that tells you everything you need to know about your MPEG-2 stream is Bitrate Viewer. Get free version from:

http://www.tecoltd.com/bitratev.htm

Another clue is that you are using TMPG's deinterlacing filter. I am not confident it's doing a good job. Nowadays, THE deinterlacing filter to use is Donald Graft's Decomb Avisynth plugin. I don't use most of TMPG's built in filters. In fact, I don't use TMPG at all for MPEG-2 encoding.

Good luck.

[vhelp]

dvddog,

first, you don't have to deinterlace your video since you are making an
MPEG-2 encode. NO MPEG-2 video should need to be deinterlaced, as the
support is added into it!! Leave the Interlace ON.
Also, under Video, select Inverse 32 or Interlace.

In answere to your Sony DVP F21 jitters. It's because that Sony
brand doesn't handle the encode method you used. But, you other DVD
player does. That's all!!! So, to aleaviate the jitters:
* return the Sony, and get DVD player that will handle your encoding methods.
* OR, revise your MPEG-2 encoding method and try again. Mystery solved.

-vhelp

[dvddog]

OK, d/l bitrate viewer. The DVD that I am talking about has 4 MPG movies on it. Each was processed seperately by TMPGEnc. bitrate viewer tells me that all but the last were "progressive" encoded. The last was interlaced (so much for consistency on my part). I played back the last video (the interlaced on) one on the Sony DVD and it looks perfect!! (didn't try that earlier).

Now the weird part. I opened the first three mpg's (preogressive) in TMPGEnc and went into "advanced" and double-clicked on "deinterlace" to go into edit mode. Looking at the file frame by frame it definately looks interlaced. So it looks like I have a file that is really interlaced but is being indentified as progressive.

I guess the best bet is to go interlaced as these are destined for TV not the computer. Question is should I let TMPGEnc deinterlace or just leave the defaults. I read elsewhere that converting to non-interlace reduces quality.

Thanks for the help.