Inspiring

Answered

Anyway to download 8 bit Cineform codec?

Forum|Forum|7 years ago
November 3, 2018
7 replies
6405 views

Hello,

The cameras I use are 8 bit and I'm looking for the 8 bit cineform codec to download. Cineform website lists 8 bit versions but I don't see them in media encoder. How do I get them? I would only be wanting the 8 bit versions for proxy files .

Thanks,

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Correct answer Offbeat Bryce Productions

I see no difference

I wouldn't expect you to. The strain between 1 and 4 will happen primarily on the hard drive, and most modern drives are more than capable of multiple full streams of Quality 4 HD material.

okay, so I just did a test. I made a cineform proxy file at 960x540 resolution set at quality 4. The file size was 350MB vs the built in preset of cineform proxy which was 3.2GB. Since it seems that my custom 960x540 Proxy file plays back fine I don't see any problem sticking with that.

WeAreMoose

Inspiring

Lol , you did the same mistake I tried to mention beforehand.

Yes, if you want to compress as inefficiently as possible, it's an option. Congrats.

Mike Dziennik

Community Expert

Lol. Less pixels ≠ less bits.

WeAreMoose

Inspiring

Ah I think that's splitting hairs, because less pixels, less bits. sooo...

Mike Dziennik

Community Expert

Those files are tiny. I don't think you can reliably test a data rate measured in Mega bits per second with an export that appears to be less than a second.

Ann Bens

Community Expert

Afaik there is no 8 bit Cineform codec.

Ann Bens

Community Expert

For the techies:

CineForm Introduction | cineform-sdk by gopro

Mike Dziennik

Community Expert

Interpret this as you wish...

resulting in....

...the clue is in the name of the codec.

What this means in respect to your uncompressed YUV test is unclear.

E

excited_Genie16B8

Legend

I think your reasoning is a bit off. Firstly, proxy files aren't used for anything but to increase performance. Bit depth won't have any impact on that.

Secondly, there's no disadvantage to converting 8 bit originals to 10 bit versions. But there can be an advantage, in some scenarios.

I think you're best option is to just use the included Cineform presets for proxies.

O

Offbeat Bryce ProductionsAuthor

Inspiring

I know going from 10 bit to 8 bit doesnt have impact. That’s not why I asked how to get it. I want 8 bit somthe proxy files are smaller in size. I want tiny size proxy files. It’s silly to have 10 bit proxy files that take up twice the amount of the native footage

Averdahl

Community Expert

I know going from 10 bit to 8 bit doesnt have impact. That’s not why I asked how to get it. I want 8 bit somthe proxy files are smaller in size. I want tiny size proxy files. It’s silly to have 10 bit proxy files that take up twice the amount of the native footage

Maybe the free GoPro Quik application have 8-bit codecs. I have not installed it so i dont know: https://shop.gopro.com/EMEA/softwareandapp/quik-%7C-desktop/Quik-Desktop.html

The downside if it works is that the encoding time will be really slooooow compared to the 10-bit native CineForm codec in Premiere Pro. But i do understand the concerns regarding file size.

Consider the DNX codecs and use the Preset panel in Media Encoder to find the right one. Just search for 8-bit in the search window. Fast encodes, 8-bit, some have fairly low bit rates.

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