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Colour Information in Avid’s Resolution Formats VS. Final Cut’s Formats?
I’m a Final Cut editor right now taking some classes to learn Avid. My question relates to Avid’s 1:1, 2:1, etc.. etc.. -> 15:1s, resolution formats.
I’m wondering how these formats relate to each other in terms of colour information.
In Final Cut, there’s specific resolution formats designed for specific media. For example, if I was digitizing normal Mini-DV footage, I’d select the “DV NTSC” resolution it’s set to 4:1:1. If I was digitizing from a BetaSP, I’d select “Uncompressed 4:2:2”. I wouldn’t select “Uncompressed 4:2:2” when digitizing Mini-DV footage because it’d create a file size far larger than needed for the exact same quality as a “DV NTSC” resolution file.
Does Avid work the same way? In FCP, a DV NTSC file is around 330 MB for a minute of footage. This is rougly similar to one minute of footage at 3:1 resolution in an Avid. So if I captured at 3:1, would there be any difference in quality versus a 1:1 capture?
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3 Replies
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I’ll take a stab at this. The color space is primarily detemined by the format shot. DV25 is 4:1:1/ DV50 and DV100 is 4:2:2. When going from an anlog source such as Beta to a digial one you have the option of diging using a DV coded thus 4:1:1 or you can go with a codec that has a larger colour space. In fact you could dig a 4:1:1 format using a coded with a larger color space. I am not sure what the Avid codecs use for a color space. I would guese that their “DV” codec is 4:1:1 and their uncompressed is 4:2:2
Scott Davis
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You ae correct, the format determines the color space, but don’t forget 8 bit and 10 bit!
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The Meridien based codec (1:1, 2:1, 20:1, 14:1, 15:1s, etc) are all 4:2:2 based. Standard codecs like IMX, DV, and DV50 use their respected sampling ratio.
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