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Compositing glitch when burning thru iDVD
I’m having an odd problem putting my short on DVD.
There are many shots which were multi-layer composites; and they look fine (or as fine as an amateur like myself could get them) in the rendered Quicktime files. But when I burn the Quicktime to a DVD via iDVD, I get this weird grainy pink artifact problem with some of the shots. Not all of them, just a few, but always the same few. To make matters stranger, there are other shots using exactly the same elements which are fine, so I don’t know where the problem is coming from. Here’s a link to a pair of examples:
https://www.bobforward.com/iDVDglitch.jpg
I’m assuming it’s a compression glitch. Burning the DVD via Toast does *not* have this problem, so I’m not in a total panic. But the iDVD disks seem to play better, so I’d like to find a solution or workaround if possible.
Has anyone else experienced (and more importantly, solved) this? There are many things I could try; re-rendering the original with a different codec; exporting the original back to tape and recapturing it; I’m willing to do anything that works but trial and error will take days so if anyone has an answer I’d be grateful.
Bob
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3 Replies
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Sorry no one ever got back to you but I think you’ve stumped the band. I can tell you that I have seen such artifacts but I have no idea where, when or if anyone ever figured them out.
If you were using DVDSP3 you could set compression markers at those scenes and that might convince the encoder to rethink the compressor settings.bogiesan
This is my standard sigfile so do not take it personally: “For crying out loud, read the freakin’ manual.”
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Well, at least I don’t feel alone. I *can* say that in every instance the layer giving trouble was one that I had, at some point, done some cleaning up in AE, usually hand-painting. But as stated, this does not happen every single time with such layers in composite.
By using a combination of Sorenson Squeeze and Toast I can get a DVD that works; but I’m really puzzled. Here’s how weird it is. From FCP, I actually EXPORTED THE FRAMES AS INDIVIDUAL BMPS, all of which looked fine, dragged them back in, reassembled them as single frames in the timeline, rerendered, output as DV NTSC video, burned it to a DVD — AND IT GLITCHED AGAIN.
Man, I’m ready to bellive there’s something to holistic remedies after all. 🙂 Somehow the glitch manages to infuse the very essence of the image, even when all the data has been changed to different formats.
Bob
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> Man, I’m ready to bellive there’s something to holistic remedies after all. 🙂 Somehow the glitch manages to infuse the very essence of the image, even when all the data has been changed to different formats. < That's not really possible so there's something else going on at the project file level. There is something in your timeline that is causing this whether you can see it or not. Or, even more bizarre, there is something hidden in the data associated with the original or second generation render. Do you have a chapter or other marker at that location in the timline? Can you open a copy of the timeline and then delete the rendered file? It might not be worth debugging. bogiesan This is my standard sigfile so do not take it personally: "For crying out loud, read the freakin' manual."
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