Premiere Pro and Blackmagic redux

I’ve already written about problems with rolling credits in Blackmagic sequences. It turns out that this problem is also present on PCs, and applies to any titles, and effects or transitions that are applied to them. It would be a simple workflow problem, were it not so misleading. Usually when you get something wrong with fields you get jittery motion. This time the motion is smooth, it is just resolution that is lost. I must congratulate Premiere on its ability to handle multiple formats on a single timeline, but unfortunately this is the case where the program is obviously confused, and the result is less than optimal.

I tried many other solutions to this problem, including nesting DV sequences with credits, but to no avail. There are two ways: either render your credits, titles etc. or export the whole thing with “Match sequence” settings.

Now, some of you might ask me why I don’t just use standard Blackmagic DV sequence, since it would obviously solve the problem. However, sadly, BM DV codec – or its rendering/exporting in Premiere – seems to be broken on many levels. For one, any color correction filter that is applied or a psd file with an alpha channel on top of the footage seems to create a strange mesh that is impossible to watch. Second, from time to time there appear a single or multiple frames with 16×8 or 32×8 rectangle in a random piece of screen of weird pixelated content. This looks almost like a digital drop. These problems are present on Mac and Windows, Decklink or Intensity Pro, and make using this codec and sequences impossible.

The workflow is therefore limited to the uncompressed codec. Once you know it, it’s just a minor nuisance. But a nuisance nevertheless.

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About Bart Walczak

I'm a video editor, and an aspiring colorist and VFX artist, with some experience in desktop publishing, web development and programming.
This entry was posted in bugs, video editing and tagged , , , , . Bookmark the permalink.

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