Lots of people will try to tell you AVI doesn't support various things, or that
the picture quality is worse than Quicktime, or whatever. This is of course
untrue. The problem is that there hasn't ever really been a particularly
widely-supported way of including timcode in AVIs. I'm not aware that ffmpeg
has ever supported doing so in a way that Premiere can read. My information may
be out of date, but the last time I checked, Premiere liked "tdat" chunks in
AVI files, and also seems to write XML chunks containing timecode, among other
things. This is relatively trivial to implement if one already has a RIFF file
writer, but it doesn't surprise me that there's never been much demand for it.
That said I'm surprised you're having problems with prores quicktimes, which
are usually quite reliable. What version of Premiere are you using?
Phil
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