Edius codecs

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Deparon

Active member
I have some HD footage (1080i) and I will downconvert some takes to DV (720 x 480) for another work. What is the better codec option I have for to storage the downconverted footage:

Canopus Lossless avi

Uncompressed RGB avi

Uncompressed UYVY avi

Uncompressed YUY2 avi

or MiniDV tape (by the way what codec is used by Edius when print to tape?)

Any aditional comments and/or info about this codecs are welcome...

Deparon
 
What's the purpose of storing the downconverted footage? To take to another NLE, or to save space? Since you can use the 1080i footage directly in any EDIUS project, it may not even be necessary to spend the time and space creating downconverted files.

Canopus Lossless AVI - no quality loss (it's mathematically lossless), large file size (average between 1:1 and 2:1 compression), requires EDIUS on the system to use the resulting AVI.

Uncompressed RGB, UYVY and YUY2 AVI - no quality loss, huge file size (it's uncompressed, after all), should be readable anywhere. RGB, UYVY and YUY2 are different representations. Since video is generally YPbPr colorspace, UYVY or YUY2 are usually preferred to RGB.

MiniDV tape - some loss due to recompression (it's DV compression format... EDIUS will use the Canopus DV codec for recompression). Reasonable file size, should be usable by any DV-friendly editor.

Brandon
 
Hey Brandon,

I have a QT graphic that was created in After Effects with an alpha channel. It's an open to a tv show. In Edius it takes a bit of time to render. Is it possible to use Edius to save this file( with alpha) as another Canopus format so that it works more seamlessly with Edius? I've tried a few codecs but to no avail. The graphic looks fine but alas ...no alpha channel.

jim
KRON, San Francisco
 
If you're running EDIUS version 4, then right-click the clip in the Bin, choose Convert, then generate a Canopus HQ version of the clip. That should retain the alpha channel.

Brandon
 
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