What are these "vibration" lines?

[kadzbiz]

I had some 8mm film transferred to DVD recently. The movie played fine. Then I copied the files to my PC. I used Womble Video Wizard to edit the movie. So far so good. When I authored the movie with Womble Video Wizard or TMPEG DVD Author Pro, then either used TMPEG DVD Author Pro or Nero Express to burn the movie to a DVD, I noticed that on playback, the movie had these "vibration" lines appear whenever there was movement in the film. It was fine if the scene was fairly still, but as soon as any panning etc occurred, the lines would appear. I tried re-encoding the bitrate from the original 9800 to 8000, but it made no difference. Any suggestions?

[Soopafresh]

Like this ?



In this case, I believe the person who re-encoded the footage didn't take into account how resizing would affect the interlaced source. Why he decided to change a 4x3 source into bad looking 16x9 is beyond me, but every time the camera pans, the effect occurs. Too bad, the above is pretty amazing historical footage.

[kadzbiz]

Yes, that's what they look like. Maybe a little fatter. It's not 16:9 though.

[Soopafresh]

I think you'll quite possibly need to deinterlace, resize, then re-interlace "properly". Avisynth would be the perfect app for that purpose, but you'll probably need to post 10-20 seconds of your original VOB (what the transfer people gave you) for us to recommend the specifics to (hopefully) fix it.

[kadzbiz]

I've run out of time today to do anything more and won't have the chance for a few days to do that, but in any case, can you tell me how I would go about posting the short movie on here please? Please keep a watch on this so you don't forget me. I'll be back in a few days. Cheers.

[Soopafresh]

Videohelp has a 2MB limit, so you might want to upload a clip to the free www.bestsharing.com instead.

[thecoalman]

You may have inadvertently switched the field order somewhere along the way during one of the reencodes. There's a thread somewhere describing how to determine it with virtualdub or TMPGenc. Generally you take the source into account, https://forum.videohelp.com/viewtopic.php?t=257631&highlight=

[kadzbiz]

I've just got TMPGEnc, so I'll try a few things that have come to my attention from another post and see how I go. I'll be sure to come back and ask for more help if I need it. Thanks so much.

[kadzbiz]

Took me a while to get back to this, but I have solved it with your help guys. I de-interlaced the movie tmpegenc3 and it worked fine. Cheers all.

[thecoalman]

I de-interlaced the movie tmpegenc3

You shouldn't deintelace if the destination is for TV playback, you may be "fixing" it but that's not the way to do it.. You're also basically throwing away half the resolution.

If the original files on DVD look fine on the TV you're creating a problem during your process then fixing using a method that should only be used if you have too instead of doing it right to begin with. As mentioned above you're either reencoding the source with the wrong field order or resizing improperly.. You're just using the wrong settings in in the enecoder.

[kadzbiz]

Oh. I haven't gone thru the whole process yet, so I don't know what it looks like on the TV. I only discovered the "correction" to the image by accident actually. After editing the perfect original with womble video wizard, the resulting "vibrated" movie I opened in tmpegenc3 and looked at each and every filtering option. It was when I chose "de-interlace" that the image was as the original, so I've saved that resultant file ready for authoring. As long as the image is fine on the TV, I don't mind how I did it.

P.S. I've never had this problem with any other movie.

[thecoalman]

After editing the perfect original with womble video wizard,

You're missing my point, if you have a perfect original you shouldn't have to deinterlace. Deinterlacing is a destructive process. You are creating the problem then fixing it after the fact instead of eliminating what is causing the problem to begin with.

[kadzbiz]

Hmm, strange. I've played the movie on the TV now and it is as perfect as the original. I don't know why Womble Video Wizard had created the lines in movie in the first place as I've not done anything different to any other movie I've created. All I know is that tmpgenc resolved the line problem and the result plays on TV fine. But this sort of anomoly is typical of my life! I thank you for all your help and advice.

Are you able to help at all with my other posted question?

https://forum.videohelp.com/viewtopic.php?t=327264&highlight=