Video warble introduced upon burning

[selection7]

I am getting localized video warble (simialr to what you see on some old VHS's) quite often throughout my DVD...and thick alternating horizontal dark/light bars (only for a frame or two at a time, and even then, somewhat rarely...at scene transitions) when I burn a DVD. However, when I check the authored .VOB's still on my PC that I used as my source for the DVD burn, there are no problems it.

It doesn't appear to be media problem since the errors are at exactly the same frames on multiple burns. And it doesn't appear to be a bitrate issue because I also tried lowering the bitrate from 9800+256 to 9000+256 and got no change.

The two most interesting things about it are: that the source .VOB's look great, but when I burn them to DVD, my PC and both my standalones play them with identical errors. Secondly, the horizontal dark/light bar problem only happens at scene transitions.

1st Pic: the horizontal dark/light bar problem on the burned DVD (the capture doesn't look much like the paused video--the bars are MUCH more faint and there are sharp horizontal interlace-like lines in the capture).

2nd Pic: The same frame but from the source .VOB (see the transitioning? it kind of looks like ghosting...or maybe it is ghosting, I'm no expert)

3rd Pic: The warble problem on the DVD (this capture looks NOTHING like it does when it's a paused frame within WinDVD...the warble isn't even there and the interlaced looking horizontal lines are added).

I was hoping someone could shed some light on the situation. I used TMPGEnc Pro, TMPGEnc DVD Author, and Nero Express to create my DVD.

[selection7]

[selection7]

Warble problem doesn't show up in the capture

[lordsmurf]

Warble? I think you mean "blended deinterlace"

I bet NVE is doing it. NVE is crap video software.
Only use the BURNING ROM portion of Nero.

This could be any number of things.
I would need it better described, or a video clip.

[junkmalle]

The first picture is really sick. Look at one field:



The other field is similar but with the light and dark bands reversed:



How did your video get that sick?

Your second picture is simply a blend deinterlace of the first. Not great but that's the least of your worries!

[lordsmurf]

Power issue.

[selection7]

Thanks for your replies. I needed some time to experiment and learn. I think I've been able to get rid of the thick, light/dark horizontal lines. I unfloded the original interlaced picture, resized, and then folded them back together...whereas last time I just resized. I don't know if that actually corrected the problem but the light/dark horizontal lines don't show up on my final burned DVDR anymore. However, I still have the video "warble" which looks sort of like "tracking" problems that you'd get when playing a VHS tape with the tracking setting off.

Below you'll see a capture (from the same frame as before) from the original .VOB's I downloaded from a torrent. As you can see, the guy who recorded it (who admitted he had just bought a video recorder and didn't know how to properly use it) has recorded the video as if it was full screen, but the video was actually broadcast in widescreen, and now when it plays as "full screen" it just looks squished.

Here's what I've done:
I opened the original .VOB's with VirtualDub. Then I null transform cropped the black bars, unfolded, resized, folded, and saved as segmented .AVI's. Then I opened TmpgEnc Pro and converted the .AVI's to .MPG's, used TmpgEnc Pro to "cut & join" the .MPG's together. Then I used TmpgEnc DVD author to author a DVD using these .MPG's. Then I used Nero Express to burn the DVD to a DVD-R.

Buring with a different program didn't help.

Does anyone have any ideas? Could it still just be a burning program issue? Like I said, I tried a different program (ImgTool Burn) and got the same results.

All throughout the process I never changed the video from its original 25fps PAL 720x576 settings.

[selection7]

UPDATE: I've tried different media too...it didn't help. I'm now trying a different tact. I'm changing the display video arrange method instead. It looks like using that method I'll be able to get what I want without any resizing or folding/unfolding necessary. However, the flickery warbled video problem hasn't gone away.

[selection7]

Problem solved!! Turns out I was assuming B field before A field when I needed to be doing A field before B. I changed that and the flicker/warble went away. Thanks everyone.

There was a guide here at videohelp that said basically the only way to know whether you should tell TMPGEnc to encode B field first or A field first was to try it one way and if it looks flickery, then do it the other way instead. When I read that about the flicker I decided it may be talking about the same thing I was calling a "video warble" so I gave it a try. Long story short, it was.

Now I have no dark/light lines or flicker and it's all good.