We've been getting an occasional issue with some of our footage. It's happened both when writing to CF card, as well as to RED drives (we're about to move over to solid state drives. But for the moment, still using either CF cards or hard drives (all RED brand) depending on the preference of the DP). This has all been from the same RED One camera, with the MX sensor. Firmware, I think is latest build, if not it's about 6-9 months old. We thought the issue was happening because we were writing Redcode 42. We toned back down to Redcode 36 and that has helped, but we still get it occasionally.
What happens is, the proxys look fine, but upon transcoding the footage to ProRes, there's this blue-ish mosaic-like pattern over the footage. For some shots, it will only be, say, the bottom 3rd of the image, or the top 1/2 of the image. The attached screen shot (also viewable here: http://gallery.me.com/npasq#100050/R...&bgcolor=black ) shows what we're seeing, and in this case, it's over ALL of the image.
For some of the footage, re-transcoding will fix. For an equal amount, re-transcoding, using any method, will not remove the blue pattern. We transcode 99% of our RED footage using a Red Rocket card (we only have one currently), and the latest stable build of Redcine-X. The issue has persisted for some shots across multiple versions of Redcine-X. We're still on Mac OSX 10.5 Leopard, using a Mac Pro with 8 cores and 12GB of RAM. We ALWAYS copy our footage over using R3D Data Manager (just the MD5 Checksum, due to time contraints, but still better than a straight Finder copy). I've even tried using R3D Data Manager's file recovery on affected footage, thinking maybe a few bits or some attribute flags got skipped: no luck.
When it happens, sometimes it affects every clip on a CF card. Sometimes it's only one or two clips; maybe the first two, maybe the 2nd and 5th but then the 6th and 7th are fine, maybe the last three. Really cannot think of anything in common between the affected clips.
Has anyone seen this exact problem before? Anyone know what causes it? We've been having this problem for about 6 months now, but given how our commercial schedule works, it's just now that some of the spots have been out long enough that I can share screenshots and try to get feedback. The attached screenshot is from a Transformers Rescue Bots commercial shoot. The shoot itself took place back in February or March, and the spot is now on air, so I'm free to share a screen-grab.
I'm out of ideas of things to try/troubleshoot/test. I've done everything I can think of and also have control over.