Colour Depths / storage space consumption

Hi All,

In a simple shot based(stills) Timeline project I used the default project settings (Colour Depth of 8-Bit)

But now I am wondering

if 8-Bit is a good choice for such a project?

how relevant the selected Colour Depth is when it comes to storage space consumption?

Thank you!


Footage: Tiffs/photos: 24Bit per Pixel
Colour Depths: 8-Bit (Create New Project in Flame)
Tagged Colour space = Rec.709 video (selected during import in MediaHub)

I believe even with an 8-bit project setup you can have sequences at any bit depth. So if you need 16bit, create a new 16bit sequence and you’re good to go.


Take 10 bits minimum for your sequences. Even if the start and end of the file is 8bits. 8 bits processes ( specially actions) tend to generate banding in images with gradient areas, graphics and motion graphics. As with the resolution, projects are bit depth agnostic. It sets only defaults.

The impact of bit depth on space consumption is more or less exponential. There is no very significant difference between 8 and 10 bits but 32 bits can produce huge large files. If your needs are never beyond rec709 you can comfortably stay at 10 bits.

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tiff 24bpp is actually "8 bit "

8+8+8 RGB = total of 24 bit. so you should be fine setting stuff to 8bit… although i always just go 16b float

I am actually not sure what dictates the archive size because then it caches the media “uncompressed”

The bit depth for each primary color is termed the “number of bits per channel”, typically ranging from 8 to 16bits. The “bits per pixel” (bpp) refers to the sum of the “number of bits per color channel” i.e. the total number of bits required to code the color information of the pixel .

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Thanks to all of you for the helpful feedback !

The project’s bit depth option defines the default value when using tools like creating a colour source clip or a sequence. Nothing prevent you to work with content of any supported bit depth even if you selected 8-bit as the default value.

Based on your cache formats, integer (i.e. 8-bit, 10-bit, 12-bit and 16-bit) and float (16-bit and 32-bit floating pont) will be cached based on the selected encoder (Uncompressed RGB, ProRes,DNxHD/HR for integer and Uncompressed or OpenEXR (PIZ) for float format.

Archiving is always uncompressed and is not dependent of the cache format.