Tearing in Quicktime

[tuomok]

If you really have checked that all QuickTime formats (including uncompressed) plays back with the same artifact, then it might have something to do with your display card / drivers or something in that arena.

Go to QuickTime settings > video and enable Safe Mode and try again. Don't know if it helps at all, but it doesn't hurt to try anyway :shrug:

[akika]

If you really have checked that all QuickTime formats (including uncompressed) plays back with the same artifact, then it might have something to do with your display card / drivers or something in that arena.

Thanx for your answer! I´ve checked uncompressed: nothing.
The problem occurs on at least 3 different computers.




Go to QuickTime settings > video and enable Safe Mode and try again. Don't know if it helps at all, but it doesn't hurt to try anyway :shrug:

You were right: It did not hurt, but it did not solve the problem either ;-)

[Integrity]

Check your field settings...everywhere. Through the Interpret Footage command on each clip, within the Render Queue, and the Output format. It might be because of the interlacing of your footage, and AE is converting fields incorrectly based on your settings.

[akika]

Check your field settings...everywhere.

I´ve checked it everywhere, it´s set on OFF, just like it should...

[tuomok]

Proxies disabled? All quality/resolution settings at full?

[akika]

yes. Proxies off - output on full quality.

[Angryman]

I`ve had a similar problem last week, it was caused by different footage resolutions... I used TV Footage/PAL (Upper Lines first, maybe in english it's called upper field) and Screenshot Footage which used (Lower line first, caused by the codec)...

I only could solve the problem by prerendering some of the footage and playing around with different settings at each render (Upper/Lower)...

And another hint... Do u use SA Color Finesse??? If yes, uncheck effect and check it again... its buggy and causes timt by time flickering when its directly applied to .mov .avi etc

[akika]

Thanx for the advices:

My input material are TGA sequences (495*257), I used no upper/lower fields because the movie is not meant to be shown on a TV. I don´t use color finess.

[tuomok]

If you can, post a screencapture of the prob for us to see. That could help in finding the cause of it...

[akika]

I´ve put 2 videos online for download. One as a MOV www.akika.de/tearing_test.mov (http://www.akika.de/tearing_test.mov) (1.3 MB) and one as an AVI/XVID (1.1 MB) www.akika.de/tearing_test.avi (http://www.akika.de/tearing_test.avi). The strange thing is, my AVI has the same tearing effect in VLC Player, in BSPlayer it plays smoothly, while it´s jerking in Mediaplayer.

Sounds like a playback problem ...

[dbates]

Huh. . . I can't see anything strange in the .mov file. I can't play the .avi, but that's a problem with my system. Did you try playing the .mov on another computer?

[akika]

Yes, i´ve tested it on 3 different computers.

You can see the problem best in the sequence when the white papers come into view. It looks like the vertical blank tears the animation.

[dbates]

Ah. . . I think I see it now. It comes and goes; I played it once and it looked perfect, played it again and it tore, again and it was perfect. . . strange. But the AVI codec works, right? Have you tried another compositing program?

[akika]

Yes. I tried combustion and Quicktime itself. Same result...

[dbates]

I have no idea if this will work or not, but maybe you could try saving all your Targa files as TIFFs or JPEGs. The problem can't be with the program, as you've tried multiple ones; it can't be the codec, for the same reason; it isn't the player, is it? There aren't that many more options!

-dbates

[akika]

I tried different input formats (JPG, TGA, BMP) - no effect :-(

[tuomok]

Aha. I see.
The tearing is just the way computer screen refreshes with QuickTime-player during playback. So it's kinda a playback problem. Nothing to do with the program that generated the clip.
I'm so used to it that I don't mind that at all when previewing my own renders. It's just... erm... the way it is. :shrug:

So there isn't anything technical to fix there, really... You can do one thing ofcourse: change the animation / speed (vertical screen movement) of the objects. But I wouldn't.

[akika]

I think this effect is very annoying, don´t you think? Isn´t there a possibility to tell Quicktime to wait for the vertical blank? I mean, the other players like BSPlayer can do it, why can´t quicktime?

I think I will fall back on "plan B" and slow my animation down :-(

Thanx for the answer Tuomok!

[Rapier]

I watched them both and they both seemed fine. Playback was fine and went smoothly, colors were strong. There was a little washing out of the whites when the elements get near the top left of the screen, but I think it was probably intentional.

[akika]

Thanx for testing rapier!


I watched them both and they both seemed fine. Playback was fine and went smoothly, colors were strong.
You did not see kind of "vertical blank" tearing that occurs when the white papers come into view? Strange! I tested it on ~6 Systems (win2k, xp, MAC, Monitor/TFT ...) and everywhere problems occured, especially visible in fullscreen. Which system do you use? Do you have a special quicktime version etc?



There was a little washing out of the whites when the elements get near the top left of the screen, but I think it was probably intentional.
that´s right.

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