XDCAM Space Requirements
From Help Wiki
Bitrates and space requirements for XDCAM footage can be found in this PDF.
| |
MPEG HD422 (50 Mb/sec) 4:2:2* best for chroma key! |
MPEG HD (HQ) (35 Mb/sec) 4:2:0* |
MPEG HD (SP) (25 Mb/sec) 4:2:0* |
DVCAM (25 Mb/sec) 4:1:1* |
| 1-Minute |
500MB |
345MB |
263MB |
270MB |
| 2-Minutes |
1GB |
690MB |
527MB |
540MB |
| 10-Minutes |
5GB |
3.5GB |
2.7GB |
2.7GB |
| 30-Minutes |
16GB |
10.5GB |
8GB |
8GB |
| 1-Hour |
32GB |
21GB |
16GB |
16GB |
| 23-GB Disc |
43 Minutes |
60 Minutes |
90 Minutes |
85 Minutes |
| 50-GB Disc |
95 Minutes |
145 Minutes |
190 Minutes |
185 Minutes |
- Chroma Subsampling Rationale:
Because of storage and transmission limitations, there is always a desire to reduce (or compress) the signal. Since the human visual system is much more sensitive to variations in brightness than color, a video system can be optimized by devoting more bandwidth to the luma component (usually denoted Y or first digit in the notation), than to the color difference components Cb and Cr. The 4:2:2 Y'CbCr scheme for example requires two-thirds the bandwidth of (4:4:4) R'G'B'. This reduction results in almost no visual difference as perceived by the viewer.
