11th hour and I gotta know...

[MichaelP]

There numbers represent different data rates depending on the frame rate:
220Mb/s is for 30fps or 59.94 interlace formats. 24fps having 4/5ths the number of frames comes in a7 175Mb/s. The "x" represents 10 bit. Data rates without it are 8 bit. So 220x is the highest 10 bit DnxHD data rate for 59.94 1920/1080 interlace formats. The highese of course would be uncompressed HD at either 10 or 8 bit.

So for 1080i formats from high to low
Uncompressed (1:1) 10 bit
Uncompressed (1:1) 8 bit
DNxHD 220x (10 bit)
DNxHD 220 (8 bit)
DNxHD 145 (8 bit)

for 1080p/23.976 formats:
Uncompressed (1:1) 10 bit
Uncompressed (1:1) 8 bit
DNxHD 175x (10 bit)
DNxHD 175 (8 bit)
DNxHD 115 (8 bit)
DNxJD 36 (8 bit)

A full explanation of DNxHD as well as a storage calculator can be found here:
http://www.avid.com/dnxhd/
http://www.avid.com/widget/DNxHD.asp

Michael

 

[Troy Smith]

Thanks Micheal.

 

[M Most]

220MB/s is for 30fps or 59.94 interlace formats. 24fps having 4/5ths the number of frames comes in a7 175MB/s.

Uhhh... I think you mean 200 or 175Mb (MegaBITS), NOT 200 or 175MB (MegaBYTES).

 

[MichaelP]

I am still learning what the "shift" key on the keayboard does.

Thaks - I will correct.

Michael