Apple Final Cut Pro 7 - Manual (Page 222)

60 min. 30 min. 10 min. 5 min. 1 min. 30 sec. Video data transfer rates
13 GB 6.5 GB 2.16 GB 1.08 GB 216 MB 108 MB 3.6 MB/sec.
DV-format video
HDV (1080i)
21.6 GB 10.8 GB 3.6 GB 1.8 GB 360 MB 180 MB 6 MB/sec.
Medium-quality M-JPEG
41.3 GB 20.7 GB 6.9 GB 3.4 GB 705 MB 352.5 MB 11.75 MB/sec.
DVCPRO HD 1080i
43.2 GB 21.6 GB 7.2 GB 3.6 GB 720 MB 360 MB 12 MB/sec.
High-quality 2:1 M-JPEG
86.4 GB 43.2 GB 14.4 GB 7.2 GB 1.4 GB 720 MB 24 MB/sec.
Uncompressed SD video
434.4 GB 218.7 GB 72.9 GB 36.5 GB 7.3 GB 3.6 GB 121.5 MB/sec.
8-bit uncompressed 1080 29.97i
HD video
Sample Calculation for Disk Space Requirements
Suppose you want to create a music video that’s approximately four minutes long using
DV video for capture, editing, and output. Consider a shooting ratio of 15:1, meaning you
shoot 15 times more footage than you will use in the final movie.
Stage 1: Determining the Total Duration of Media Captured to Disk
15 x 4 minutes = 60 minutes
Stage 2: Determining the Data Rate Requirements for DV Media
3.6 MB/sec. video data rate x 60 seconds = 216 MB/min.
Stage 3: Calculating Disk Space Requirements for Media
60 minutes x 216 MB/min. = 12,960 MB
12,960 MB ÷ 1024 MB per GB = 12.66 GB
Stage 4: Multiplying the Final Movie Length By a Safety Margin of 5 for Extra Files
4 minutes x 216 MB/min. = 864 MB x 5 = 4320 MB
4320 MB ÷ 1024 MB per GB = 4.22 GB
Stage 5: Calculating the Total Disk Space Requirements
12.66 GB + 4.22 GB = 16.88 GB
Round your calculation up to 17 GB to be safe. This is the amount of disk space you’ll
need for this one project. If you plan to work on multiple projects at the same time,
estimate the amount for each project and add these numbers together.
222 Chapter 13 Determining Your Hard Disk Storage Options