Saturday, February 18, 2012

[Avid-L2] Re: ProRes ingest - DNxHD exports - no video

 

> Greg Huson wrote:
> Video mix downs solve most of these problems,
> they render much faster, and you can use qt ref.
> not perfect, but the faster render kind of absolves that...

This wasn't a QT reference file. I took a single ProRes QT clip. Imported it as ProResMXF (native). Set the render settings in Avid to DNxHD, applied a crop and rendered the short sequence. Then exported "same as source", which resulted in a DNxHD self-contained QT file. The QT player inspector ID'ed it as DNxHD, but the video was black.

Evidently something is wrong in this path. My guess is that Avid is properly rendering to DNxHD, but the "same as source" flag on export is possibly set to ProRes, which would obviously confuse QT Player.

When I changed the render setting to ProRes (matching the ingested media), the "sas" export was good. Tests will all DNxHD media were fine.

- Oliver

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