Apple Final Cut Express 4 - Manual (Page 157)

Chapter 12 Determining Your Hard Disk Storage Options 157
III
Planning for Additional Media Files
In addition to space for captured files and project files, you need extra space for render
files, graphics, movie files created in other applications (such as animations), additional
audio files, and so on. A loose rule of thumb to determine how much space you need is
to multiply the amount of space needed for your finished program by five.
Ultimately, the amount of extra space you reserve depends on how much additional
media you create during editing. For example, if you use hardly any effects, additional
render files may not be a factor. If you are using only a few graphics files and little
additional audio, these may not be a concern, either.
Keep in mind that although real-time effects don’t require additional drive space for
rendering, you still need to render the effects at high quality for final output, so at that
point you need enough drive space for render files.
Calculating Hard Disk Space Requirements
You can use the table below to estimate how much disk space you need for your project.
DV data transfer rate 30 sec. 1 min. 5 min. 10 min. 30 min. 60 min.
3.6 MB/sec.,
DV-format video 108 MB 216 MB 1.08 GB 2.16 GB 6.5 GB 13 GB
Apple Intermediate Codec 1
HDV 720p30
210 MB 420 MB 2.05 GB 4.10 GB 12.30 GB 24.61 GB
Apple Intermediate Codec 1
HDV 1080i50 1
360 MB 720 MB 3.52 GB 7.03 GB 21.11 GB 42.19 GB
Apple Intermediate Codec 1
HDV 1080i60
420 MB 840 MB 4.10 GB 8.20 GB 24.61 GB 49.22 GB
1 Data rates for the Apple Intermediate Codec are variable; these figures are approximate and may vary according to
the complexity of your footage. Images with a lot of detail have a higher data rate, while images with less detail
have a lower data rate.