Re: [Avid-L2] Re: MC exporting to quicktime how to get it right?

 

On Mar 14, 2011, at 6:20 PM, oliverpetersvidy wrote:

>> Job ter Burg wrote:
>> Again, I think QuickTime is the issue and Avid's
>> way to make that work is use the Avid QT codec.
>
> I agree. QuickTime is not a professional video architecture. It was developed as a multimedia application for computer-based presentations. It currently lives on as a consumer media player and a set of legacy codecs. No one has true control of what QT does to a file except for Apple. Everyone else is reverse-engineering to get the desired results.

That's why there's a new time-based media architecture coming to Lion - AV Foundation, designed for the iOS and almost certainly the media foundation of the next version of Final Cut Pro.
>
> Avid QT-in and Avid QT-out is controllable because Avid designed it to work and controls the codec. Conversions to other formats are a bit unpredictable. For example, I can convert Avid QT files to ProRes using Compressor or I can convert them using Squeeze (or other). QT will display the Compressor-encoded files with expanded levels (to the computer screen), while the other encoded files will be washed out. Yet, both encodings are actually the same. The difference lies in the QT player and profiles that have been written into the file. This is ONLY a display issue.
>
> Then you can add the differences between QTX and QT7. It's amazing how bad QTX actually is. It's great with H264 or uncompressed and completely abysmal with ProRes files. Go figure!

"QT X" doesn't deal with pro res files at all, It simply passes them back to QTkit, or if there's no Cocoa way, it passes down to the old C API.

QT X really only plays H.264.

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