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Prores 422 transitions brightness difference, between clips.
I’ve been experiencing some weird disturbances in the last two-three frame before chanceing to another clip in a sequence. It’s like the brightness drops or rises a bit, just before the other clip displays. In Apple prores HD
I’ve had this problem before! When i was working somewhere else.
Also i’ve experienced when using very bright transitions like dip to color dissolve (White) , it sometimes just cuts out in 2-3 black frames, in the quicktime expert! Even in 8-bit uncompressed!
Now please help me! This old ghost have been haunting me FOREVER!!!
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6 Replies
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[Max Christensen] “Also i’ve experienced when using very bright transitions like dip to color dissolve (White) , it sometimes just cuts out in 2-3 black frames, in the quicktime expert! Even in 8-bit uncompressed!”
The problem is that this transition (if I’m not wrong), works in 8b RGB. There is an unavoidable change in color space for the duration of the transition.
rafael -
Is there a definitive list of which transitions in FCP are at what bit depth? I know in the manual it tells you which filters are, but what about transitions? Also, how does the video processing mode affect this?
thanks!
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Have you found the problem? I’m having this same issue, where the brightness is different for a few frames around a cut. It only happens around some clips that are retimed. Thing is, they do it around clips that are retimed in FCP. I pulled the clips into Shake and output them, re-importing into FCP, and the same thing happens. I only see it when I watch a it in QT. It looks fine in Final Cut. Driving me nuts!
23.98 fps ProRes and imported Shake clips are 23.98 Animation codec.
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No i never solved this issue! And frankly i’m waaay to annoyed with it to even talk about it! 😀
No seriously. I’ve tryed everything and never solved this mystery.
For the sake of the lord, let me know if you figure it out!
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Don’t know exactly what the problem might be… I’m sure it has something to do with FCP rendering some things at other bit rates.
I do all of my projects in ProRes 4444, with 10-bit and super white enabled, with high-quality motion rendering. I don’t seem to have too many problems.
There is an brightness/saturation jump in all my clips when final cut opens. As the program opens and you see the various sequences popping up, you see them jump in brightness and saturation… I believe this is due to the difference between the information in the video file, and how it can actually be displayed.
Supposedly much of this is addressed in the new FCP. (Which I frankly wonder about… Marketed as a pro tool, sold as a consumer app? Strange.)
Another thing to think about is which version of quicktime you’re watching. Quicktime X plays at crappy bitrates.
Hope some of this helps. I would love insight into what’s going on with all these issues.
-Tom
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Hi Max,
I am encountering the same problem. Any solutions yet?
Thanks
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