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The consumption of hard disk space is dependent upon the size of the video image while capturing, the image format plus the number of frames/second. Using the YUY2 OR RGB image format, the following chart shows hard disk space con- sumed:
image size | frames/second | bytes per second | 1 minute video | |
160x120 | 15 frames/sec | 425 | Kbytes/sec | 26 Mbytes |
320x240 | 15 frames/sec | 850 | Kbytes/sec | 52 Mbytes |
320x240 | 30 frames/sec | 1.7 | Mbytes/sec | 104 Mbytes |
Video consumes quite a bit of hard disk space! At 320x240, you will only be able to store about 10 minutes of video on a 1 Gigabyte hard disk!
To reduce the amount of hard disk space used by your digital videos, you can edit the video using one of the popular
Tips on improving capture performance
Do not use DoubleSpace or any other disk compression scheme! This severely slows down your hard disk.
Turn off screen savers and do not connect to a local area network.
Most professionals capture video and audio separately. This allows them to “lay down” the audio track on top of the video tracks while editing. Capturing video separately will increase the performance of your video captures.
There are several hard disks on the market which are designed for higher perfor- mance video captures. These drives use 1:1 interleaving and track caching to elim- inate gaps caused by a hard disk drive seeking to the next track. They are available with both IDE and SCSI interfaces.