Thursday, November 19, 2020

Re: [Avid-L2] Lavc57.24.102 netflixprores 3840_2160 What is this codec that I can ama but not transcode or consolidate?

Seems like it would be possible to edit the QuickTime metadata to match a "genuine" ProRes file and everything would work, but I don't know of a tool that could do that.

On Wed, Nov 18, 2020 at 8:10 PM John Moore <bigfish@pacbell.net> wrote:
I did try the subclip approach for just V1 but still no go.  It's a super simple sequence but I'll try  just one clip later.  I did hear from Netflix support:

"Hi John,

Yes, Netflix uses a raft of custom ffmpeg recipes (and some proprietary plug-ins) to do many of the backend encodings. I can only guess that Avid may not be able to transcode because it can't reliably identify the source codec.
You might try using another product (like Resolve) or ffmpeg itself to create a transcode outside of Avid to a more familiar codec. I personally haven't seen any software behave this way, especially considering that it's still a ProRes file and still abides by the ProRes spec.

"Hi John,

Yes, Netflix uses a raft of custom ffmpeg recipes (and some proprietary plug-ins) to do many of the backend encodings. I can only guess that Avid may not be able to transcode because it can't reliably identify the source codec. You might try using another product (like Resolve) or ffmpeg itself to create a transcode outside of Avid to a more familiar codec. I personally haven't seen any software behave this way, especially considering that it's still a ProRes file and still abides by the ProRes spec."

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