Thanks for your input, but I successfully converted all the TIFFs to Prores PRIOR to importing and working on them in the Prores timeline. Now I’m exporting the Prores material from that same timeline to a Prores movie, so the conversion is in the past.
In my ignorance, from what I can make out, it’s some kind of frame-specific artifact embedded in the final movie that Quicktime Pro misreads. When the movie is opened in FCP it plays back fine – strange since QT Pro is FCP’s platform, right?
I tried to convert a sample of the luminance surge to H264 to post on this site but the conversion (in QT Pro) did away with the problem entirely. Hmm.
B
Macbook Pro 2.5 Ghz Intel Core 2 Duo
2 GB 667 MHz DDR2 SDRAM
OSX 10.5.7