Operation Manual

Appendix A: Setup options 265
width and height greatly decreases file size, although
compression moderates this effect.
Quality, data rate: Depending on the codec being
used, you can adjust the quality percentage or data rate
with the slider. The higher the percentage or rate you
choose, the larger the resulting file.
Frames/second: The default value is
29.97 frames per second for NTSC
video, or 25 frames per second for
PAL. You may want to set the frame rate lower for
applications such as Web video. Most Pentium-based
computers can play 352 x 240 at 15 frames per second
smoothly. Higher performance PCs will be able to play
back video with larger frame sizes and higher frame
rates smoothly.
Audio compression settings
Audio settings: If you want to keep file sizes to a
minimum, audio for many digital uses can be set to
8-bit mono at 11 kHz. As a rule of thumb, try 8-bit
11 kHz for audio that is mostly speech, and 16-bit
stereo at 22 or 44 kHz for audio that is predominantly
music. By comparison, CD-ROM music is 16-bit stereo
sampled at 44 kHz. Another convenient rule of thumb
for audio compression is that 11 kHz is roughly
equivalent to AM radio quality. 22 kHz equates to FM
radio quality, and 16-bit stereo, 44 kHz to audio CD
quality.