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Weird video artifact in Canvas and Viewer playback
Hi guys,
Yesterday I loaded up some GH1 footage I shot of a friend’s apartment. I noticed when I played back some footage in the Canvas at full-screen on my second display, I got a strange horizontal distortion that moves up and down the image and then disappears. I don’t know how to get a screen shot, as it’s happening only during playback. I tried the footage on my laptop screen, and in the viewer also, and it still has the distortion. However, if I playback the quicktime file in capture scratch, or export the clip, it is clean, so I don’t think it’s a camera problem. It doesn’t happen on all the clips in FCP either, and not throughout the whole clip when it does happen. It happens at the same places every-time, however.
I took more footage later on and logged it, on a different drive, and I’m still seeing the problem. It looks almost like an old bad tape problem, except of course there was no tape capture.
I’m running the latest FCP on Snow Leopard on a couple month old 17 inch Macbook pro, and haven’t had a problem before.
The only new addition to my system is a g-tech Raid connected by a dynex eSata/express-card adapter, and to try and control things, I’ve unplugged it and the adapter and captured footage on a different drive.
I’ve trashed preferences, restarted, I’ve still got the problem. It’s annoying and scary. Any ideas?
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7 Replies
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I have the same problem, and it seems to happen only when I go full screen on AVCHD clips. I have a GH1 but that is not the problem, as this happens also with Canon HF s100 clips.
I personally think this happened after Snow leopard. Have you gotten any other feedback..
If you take the same clip, reveal it in finder and just “preview” it by hitting the space bar, does it do the same strange thing? Mine does not. Only inside of FCP….interested in knowing if anybody else have this problem. It is irritating..
THomas
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Thomas, I’m glad I’m not crazy!
It only happens inside FCP and I’ve only noticed it after Snow Leopard. I also have an HFS100 and I’ve edited hours of hours of footage before Snow Leopard (well, before the new FCS too) and never had a problem.
Just these latest GH1 clips and it’s definitely not file corruption, as the log and transferred pro res clips play fine anywhere outside of final cut.
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Hey Guys,
I get the same weird banding issue when viewing 1080p footage in it’s native codec, but I tested something and found that if it’d been converted to ProRes422 I don’t get it when doing playbacks from the timeline.
That being said, when I export the final footage, I’m not getting the banding in my output files at all, so I’m pretty sure it’s a FCP issue that just needs some help, but yes, it would be delightful if it gets fixed.
Long way to say you’re not alone, but there it is.
kev~!
Kevin Hamm
Video, Web, Print, coloring books, jam and socks. -
I wasn’t aware that Final Cut could view AVCHD files natively, unless you mean in log and transfer.
At any rate, it’s happening to me with my transcoded to pro-res stuff, but yeah, only in final cut.
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Since I see this issue so often, I think Apple needs to create a big nag screen that displays the first 100 times you open Final Cut Pro:
THE CANVAS WAS NOT DESIGNED TO SHOW ACCURATE OUTPUT. WHAT YOU SEE ON THE CANVAS IS ONLY AN APPROXIMATION. THE ONLY WAY TO VIEW YOUR ACTUAL VIDEO IS TO USE A BROADCAST MONITOR ATTACHED TO A DEDICATED VIDEO BROADCAST CARD. -
Understood, it’s just odd that it never did it before, with higher data rate footage converted from AVCHD, and now, with the GH1, it does.
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Any resolution to this on-going problem? It cropped up for me and I fixed it using the replacement of DesktopVideoout.component as indicated in another COW post. That seemed to work fine for months.
Now, the problem is back again. I can play the same res file directly in QT with no problem, but in FCP7, I get weird horizontal scanning problems almost like a rolling shutter in the Canvass and when going full screen.
Has Apple weighed in on this anywhere?
Thanks, in advance, for an help…
Don
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