Video Artifacts on playback

[Roland R. kahlenberg]

[Chris Ricci] “I am getting video artifacts when I render out some projects from AE”

So, not all comps render with this glitch?

Have you tried rendering to an uncompressed CODEC? Try different formats – AVI, QT, Image Sequences. If the renders are long, then identify a segment for the test renders.

If the renders done as per the para above are faulty as well then there might be an issue with the source footage. You can read additional metadata of your source footage by selecting it with a click+ALT combo selection – the CODEC information will appear in the Project Panel.

BTW, you’ll do well to post a JPG of the glitch.

Cheers
RoRK

Intensive AE & Mocha Training in Singapore and Malaysia
Adobe ACE/ACI (version 7) & Imagineer Systems Inc Approved Mocha Trainer

[Chris Ricci]

That’s the other crazy part. I can’t print screen it. I just tried for 15 minutes. It looks fine at rest. It is only when it moves?!?!?

I tried uncompress AVI and Image sequence. This is what the image looks like without the error.

pic.jpg

[Chris Ricci]

After 50 tries I can see this line. This is only minor to what comes up. Can someone please offer some solution?

artifacts.jpg

[Thomas Leong]

Looks like “video tearing” –
https://en.wikipedia.org/wiki/Screen_tearing

[Chris Ricci]

thanks Thomas!

I am reminded of the Tommy Boy line “now that we’ve identified the problem, how do we fix it?”

I updated all my software and video driver. If I play the video on other computers I get it too. Any ideas? I looked at SA COLOR FINESSE 3
and the BROADCAST COLOR filter to fix with no success but I could be using them incorrectly.

Any ideas?

[Roland R. kahlenberg]

Are the errors consistently on the same frames? I have a feeling that the problem resides in the source material, within a field. When viewed via frame mode, you won’t see it but when rendered with fields, the problem appears.

There is a smaller chance that it could be a memory issue if it’s not a field/source issue. Try rebooting and start rendering as soon as you launch AE – just to ensure that memory isn’t used up by prior AE activity. Of course don’t launch other apps etc while this is rendering – again, only if it’s likely to be a memory issue.

HTH
RoRK

Intensive AE & Mocha Training in Singapore and Malaysia
Adobe ACE/ACI (version 7) & Imagineer Systems Inc Approved Mocha Trainer

[Thomas Leong]

Chris,

If I read you correctly, it is only visible on playback, but not as a still frame (pause mode)? If so, this would mean it is not present in the file, but surfaces only during playback. Then it is very likely merely a timing issue between the graphics card and the refresh rate of the monitor you are using, and not a render-to-file issue (To double check, I’d render a problematic section out into a Targa sequence and check the Targa files individually).

If it is a timing issue, try:
– another graphics card
– another monitor (or 2 monitors side by side in clone mode being fed by the same graphics card/settings
– force/change refresh rates on the monitor (60Hz,90Hz, etc…basically multiples of your video’s frame-rates)
– read the wiki again for other more complicated solutions (double-buffering, etc)

Thomas

[Chris Ricci]

Thanks Dave. I’ll get the rest of the answers tonight but the reason for the 30 FPS is the video is for loops. Is that the best frame rate for seemless loops?

I am playing it in Quick Time.

[Jacques Languedoc]

I am not sure if it’s a CS6 bug or not but I do occasionally have the same type of problem or worse, I get artifacts and noise appearing on the exported video.

It doesn’t happen all the time but I notice that if my assets are on a USB 3.0 drive and that I render on the same drive, I do sometime end up with issues.

Solution: export to a different internal drive. It’s the only work around I found so far and 100% of the time it solve the issue.

All my assets are AVCHD / MPEG2 and they are always exported to uncompress .avi out of after FX.

I have a Nvidia 570 with latest drivers in my system and all SSD drive inside and USB 3.0 external drives.

[Karla Braithwaite]

Did you ever get the solution for this problem. I have it right now and it’ driving me crazy!!!