Difference between revisions of "XDCAM Space Requirements"
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| − | Bitrates and space requirements for XDCAM footage can be found in this [[ | + | Bitrates and space requirements for XDCAM footage can be found in this [[Xdcam spacereq.pdf|PDF]].<br> |
| − | {| width=" | + | {| width="90%" cellspacing="1" cellpadding="1" border="1" align="center" |
|- | |- | ||
| <br> | | <br> | ||
| − | | '''MPEG HD422'''<br>(50 Mb/sec)<br>4:2:2* best for chroma key!<br> | + | | align="center" | '''MPEG HD422'''<br> (50 Mb/sec)<br> 4:2:2* best for chroma key!<br> |
| − | | '''MPEG HD (HQ)'''<br>(35 Mb/sec) 4:2:0*<br> | + | | align="center" | '''MPEG HD (HQ)'''<br> (35 Mb/sec) 4:2:0*<br> |
| − | | '''MPEG HD (SP)'''<br>(25 Mb/sec) 4:2:0*<br> | + | | align="center" | '''MPEG HD (SP)'''<br> (25 Mb/sec) 4:2:0*<br> |
| − | | '''DVCAM'''<br>(25 Mb/sec) 4:1:1*<br> | + | | align="center" | '''DVCAM'''<br> (25 Mb/sec) 4:1:1*<br> |
|- | |- | ||
| 1-Minute<br> | | 1-Minute<br> | ||
| − | | 500MB<br> | + | | align="center" | 500MB<br> |
| − | | 345MB<br> | + | | align="center" | 345MB<br> |
| − | | 263MB<br> | + | | align="center" | 263MB<br> |
| − | | 270MB<br> | + | | align="center" | 270MB<br> |
|- | |- | ||
| 2-Minutes<br> | | 2-Minutes<br> | ||
| − | | 1GB<br> | + | | align="center" | 1GB<br> |
| − | | 690MB<br> | + | | align="center" | 690MB<br> |
| − | | 527MB<br> | + | | align="center" | 527MB<br> |
| − | | 540MB<br> | + | | align="center" | 540MB<br> |
|- | |- | ||
| 10-Minutes<br> | | 10-Minutes<br> | ||
| − | | 5GB<br> | + | | align="center" | 5GB<br> |
| − | | 3.5GB<br> | + | | align="center" | 3.5GB<br> |
| − | | 2.7GB<br> | + | | align="center" | 2.7GB<br> |
| − | | 2.7GB<br> | + | | align="center" | 2.7GB<br> |
|- | |- | ||
| 30-Minutes<br> | | 30-Minutes<br> | ||
| − | | 16GB<br> | + | | align="center" | 16GB<br> |
| − | | 10.5GB<br> | + | | align="center" | 10.5GB<br> |
| − | | 8GB<br> | + | | align="center" | 8GB<br> |
| − | | 8GB<br> | + | | align="center" | 8GB<br> |
|- | |- | ||
| 1-Hour<br> | | 1-Hour<br> | ||
| − | | 32GB<br> | + | | align="center" | 32GB<br> |
| − | | 21GB<br> | + | | align="center" | 21GB<br> |
| − | | 16GB<br> | + | | align="center" | 16GB<br> |
| − | | 16GB<br> | + | | align="center" | 16GB<br> |
|- | |- | ||
| 23-GB Disc<br> | | 23-GB Disc<br> | ||
| − | | 43 Minutes<br> | + | | align="center" | 43 Minutes<br> |
| − | | 60 Minutes<br> | + | | align="center" | 60 Minutes<br> |
| − | | 90 Minutes<br> | + | | align="center" | 90 Minutes<br> |
| − | | 85 Minutes<br> | + | | align="center" | 85 Minutes<br> |
|- | |- | ||
| 50-GB Disc<br> | | 50-GB Disc<br> | ||
| − | | 95 Minutes<br> | + | | align="center" | 95 Minutes<br> |
| − | | 145 Minutes<br> | + | | align="center" | 145 Minutes<br> |
| − | | 190 Minutes<br> | + | | align="center" | 190 Minutes<br> |
| − | | 185 Minutes<br> | + | | align="center" | 185 Minutes<br> |
|} | |} | ||
<br> | <br> | ||
| − | *Chroma Subsampling Rationale:<br>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.<br> | + | *Chroma Subsampling Rationale:<br> 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.<br> |
<br> | <br> | ||
| + | |||
| + | [[Image:Chroma_subsampling.jpg|center]] | ||
[[Category:CCAM]] [[Category:Multimedia_Lab]] | [[Category:CCAM]] [[Category:Multimedia_Lab]] | ||
Revision as of 16:28, 9 September 2011
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.
