Apple Final Cut Pro 5 User Manual download pdf (Page 181)

180 Part II Learning About the Final Cut Pro Interface

Data Rates and Storage Devices

The data rate of the video you capture depends on the format of the source video and

the codec you use for capture. If you are capturing low data rate video, chances are you

can use more inexpensive storage devices. If you need to capture extremely high data

rate video, then you may need a faster hard disk. Here are some examples of data rates

for common capture formats:

Whatever disk drive technology you decide to use, your storage disk’s sustained

transfer speed must be fast enough to keep up with the data rate. Depending on the

data rate of the video you’re capturing, a single drive may or may not be enough.

For example, if you plan to capture uncompressed standard definition video at 24

megabytes per second (MB/sec), it’s unlikely that a single hard disk will be able to

record the data fast enough. Even if you somehow successfully get the data on disk,

Final Cut Pro may drop frames during playback or output.

Format Typical data rate

OfflineRT (using Photo JPEG) Varies between 300-500 KB/sec.

25:1 Motion JPEG (M-JPEG) 1 MB/sec.

DV (25)

HDV (1080i)

3.6 MB/sec.

DVCPRO 50 7.2 MB/sec.

DVCPRO HD (1080i60)

DVCPRO HD 720p60)

11 .75 MB/sec.

DVCPRO HD (720p24) 5 MB/sec.

2:1 Motion JPEG (M-JPEG) 12 MB/sec.

Uncompressed standard

definition video

24 MB/sec.

Uncompressed 8-bit 1080 29.97i

high definition video

121.5 MB/sec.

Uncompressed 10-bit 1080

29.97i high definition video

182.3 MB/sec.

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Apple Final Cut Pro 5 User Manual Page 181