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Brightness jumps at beginning/end of dissolves ?
What causes brightness jumps/dips at the beginning & end of dissolves when exporting the sequence to a quicktime movie using the CURRENT SETTINGS?
The rendered transitions look fine when played in the timeline. When the sequence is exported, the QT movie has a jump in brightness at the 1st frame and a dip in brightness at last frames of each dissolve.
Exporting with “recompress all frames” on export or chosing the codec eliminates the jumps/dips. Of course these options are also much slower.
Is there something I need to tweak?
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6 Replies
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Never judge quality using QT Player unless you’ve enabled the High Quality flag.
Go here:
https://web.mac.com/sfcutters/iWeb/fcpworld/news/D4363B62-EFF5-4F30-B719-9A5E93AE4C92.htmlCome back and tell us if that worked for you.
Kevin Monahan
Take My FCP Master’s Workshop!
fcpworld.com
Pres. SF Cutters -
Hi Kevin…
Thanks for this tip. I learned about the high quality option when I 1st saw problems with imported DV footage when viewed in QT.
The high quality is checked, and does not change the jump/dip artifact.
I tried recompressing the problem exports in cleaner, to my online 320×240 review size, and the jumps/dips were also in these files as well.
There definitely seems to be something bad happening when exporting with CURRENT SETTINGS and not recompressing all frames. 1st I thought maybe I had made a mistake in the alignment of lower layers and the higher layer dissolve transitions.
For now, I’ll just recompress. However, I have a long format HDV projec/edit comping up and recompressing will be a major time hog. 🙁
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What are your sequence video render settings? Are you rendering with RGB, White or Super White? It should be White.
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I tried both RGB and the normal YUV 8bit. I made sure I tossed the rendered reference files so they were rebuilt. Both produced the same artifacts.
I never tried to change the WHITE setting which remains in the default WHITE setup.
When I get a minute, I plan to try a new project with some DV and HDV footage, rather than strictly with AE rendered source files of the current project.
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Change the base layer’s composite type to add, fixed it for me.
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