Wednesday, May 4, 2016

Re: [Avid-L2] Arri Alexa and or Amira "Upscaling" for True 4K not acceptable for Netflix?

 

Here are the latest posted specs for Netflix Original documentaries, which look to be the same as for Netflix Originals features and series. Note the rather limited list of acceptable cameras. Copied & Pasted from a PDF...sorry about the goofy formatting:

-----

Camera Requirements

● 4K is a requirement:
○ Camera must have a true 4K (4096 pixels wide) sensor that can output an image raster of true 4K to Camera RAW format. 

■ Approved cameras:

● ● ● ● ● ● ●

Sony F55
Sony F65
RED Epic Dragon 

RED Weapon 

Panasonic VariCam 35 

Canon C500
Canon C300 Mark II

○ Must shoot at a minimum of true 4K resolution.
■ Shooting at a higher resolution is acceptable.

  • ●  Recording format:

    • ○  Must be shot in the camera's RAW format, at a minimum of 12 bit log (or 16 bit linear) and a

      maximum compression ratio of 6:1.

    • ○  Must maintain the widest / native color space in camera. No looks or color correction should

      be baked into the camera RAW files.

  • ●  Must maintain all file metadata. 



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So I suspect that if you upconverted to 4K, Netflix might take a peak at either your camera rental receipts or your metadata and then get royally pissed off.

Things are (or at least were a little while ago) different for licensed content.

You can find the various Netflix specs and stuff here:

I'm lightly acquainted with a couple people at Netflix, one an engineer. Seems to me they're fairly sharp and open to input (at this point).  And my impression/guess is that marketing may play a role in the 4K requirement.



jim feeley
pov media
word image sound





On May 4, 2016, at 7:29 AM, john beck jb30343@windstream.net [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

I suspect it would. The sad thing is that once it is compressed to 10 
mbps or less it would almost certainly look worse than the HD image 
compressed to the same bit rate. --J.B.

oliverpeters@oliverpeters.com [Avid-L2] wrote:
>
>
> Some folks have suggested that if you upconvert HD to 4K (especially 
> if the camera masters were 4K or from a high quality image, like an 
> ALEXA) and then added true 4K film grain to the image, that it would 
> pass QC. I'm not sure whether or not that's true nor if anyone has 
> actually tried it.
>
> Oliver
>


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