Horizontal lines/Blindslike effect atedges of moving objects

[Peri]

It is not moire but blinds-like lines forming at the edges as the camera or the objects move horizontally.


The effect appears in final DVD home movies. When playing the corresponding mpegs with Windows Media Player, the effect only appears in small screen mode but dissappears in full screen.

The effect does not occur in lightly blockier SVCD-encoded mpegs.

The movies are encoded for PAL.

This problem has to be in some FAQ.

Can anybody help before I spoil more blank DVDs?

Thanks

[Ripper2860]

Sounds alot like interlacing. Try playing your files using PowerDVD and see if it still has the same effect. PowerDVD will automatically de-interlace video where as media player will not.

[lordsmurf]

Interlace is not a "problem" or "bad thing" either.

http://www.lordsmurf.com/capture/interlace.htm

[Ripper2860]

True ...

Interlace is not a problem or "bad thing".

If you intend on playing the video on a TV as opposed to a computer -- interlaced is the way to go. If you intend on playing it on your computer, then you either need to de-interlace (not preferred) or use a software DVD/SVCD player that supports auto de-interlacing (preferred), such as Power DVD. Windows Media Player does not de-interlace.

BTW -- Leaving the source interlaced and using a software player that auto de-interlaces affords the flexibility of playing the file on your computer or TV with the best visual quality.

Rule of thumb (Which I learned form -- lordsmurf)

* Capture De-interlaced or Interlaced according to whether the source is Interlaced or De-interlaced (progressive).

* Encode De-interlaced or Interlaced (progressive) according to the intented output/viewing device.

[Peri]

I added the same mpegs to a new project with Nero Vision and the lines disappeared completely. I guess it has to do with the default options in Nero rather than its virtues which, on the other hand, seem to be many.

[Mickey79]

Astrum!

I'm having the same problem.
The DVD Movie when played in my DVD Player to view on my TV has those lines forming at the edges when the camera moves horizontally.

It was playing fine on my WinDVD4 on the Computer... in small screen mode. In full screen the edges do appear a bit, but not as much as they do on my TV.

In TMPGEnc when i'm encoding the DivX to m2v file, i use "3:2 Pulldown when playback" in the Encode setting.

What should i do to remove this problem? Am i supposed to give "De-Interlace" while encoding?

Thanks,
Mickey

[lordsmurf]

Your interlace is reversed. Change in the TMPGEnc source setup.

[Mickey79]

Where? What setting in TMPGEnc? I see at least 3 places where i can mess with "Interlace" ... what exactly should i change in TMPGEnc while encoding to .m2v ??

Just to give you a complete picture.. this is what i'm doing..

I had a DivX Video file, here are it's original specs :
Size/Aspect : 720x352 (2.05:1)
Bitrate : 667 kb/s
FPS : 23.976

I used TMPGEnc to convert it to DVD Compliant mpeg2 ..
DVD (NTSC) Template loaded
CBR : 5265 (As calculated by BitRate Calculator)
Frame Rate : 23.976 fps
Encode : 3:2 Pulldown when playback
Source Aspect Ratio : 1:1 VGA
Video Arrange Method : Full Screen (Keep Aspect Ratio)
[i left everything else as default]

I got the .m2v file.
I authored the DVD in DVDMaestro and burned the DVD, with Aspect Ratio defined as 4:3 in Maestro.

Which setting must i change in TMPGEnc ?

Thanks a LOT!
Mickey

[Peri]

TMPenc

The first screen let you choose format.

In the second you choose source file. Once loaded the greyed area
for Expert setting for source boecomes active. The first option has to be "Interlaced". However I think it was when I got the lines and it was NeroVision that got rid of them.

[lordsmurf]

I can't say it enough. Deinterlacing is bad.
Hopefully NeroVision just restored proper order, and not a deinterlace.

[Ripper2860]

Mickey79,

I believe he is referring to changing the "field order". Give that a shot.

[Mickey79]

Astrum Et Securis,

Field Order??
Field Order gives you two options..
A. Top Field First
B. Bottom Field First

What has this got to do with Interlace?

I get "Interlace" or "De-Interlace" in two places...
One... the setting above Field Order called "Video Source Type".
Two... in the "Video" tab, "Encode Mode :"

Which one should be Interlace or De-Interlace... ?

Thanks,
Mickey

[Ripper2860]

I would not de-interlace.

Whatever the FIELD ORDER setting detected by TMPGenc when you load that specific AVI file to convert (the one that does not play properly on your DVD/TV) -- change it to the other FIELD ORDER setting and re-encode/convert. I would leave everything else as is.

If your CD/DVD contains an interlaced file and it looks jerky or jumpy in addition to lines -- it is ususally that it was encoded/converted with the wrong field order.

You can select a short segment via ADVACED SETTINGS/SOURCE RANGE, covert and burn to RW media to test. See if that works.


Addtitonal info (From the GLOSSARY Section) ...

In an interlaced video a field is 1/2 of a complete picture (Frame) consisting of the even or odd scanlines in the frame. Usually each field is labeled ie. Field A and Field B. When working with interlaced video it is important to note the Field Order (if Field A comes before Field B in the video stream) especially when encoding. If you notice flicker after encoding you will want to change the field order in the encoding template and reencode.