Camtasia Flash Audio Encoding Comparison
The Camtasia screen recording application can produce a movie in the Flash format using a variety of options. One of the most important choice is the audio encoding options. Below are links to Flash movies created from the same source file. The only option changed when producing the Flash files was the audio encoding setting.
Quality vs. File Size
Sound quality is important, but so is file size. Generally, the kilohertz (kHz) choice makes the most dramatic difference. The 32-bit 22kHz Mono sample sounds better than 32-bit 11kHz Stereo sample.
Fortunately, with this short 41 second movie, the difference in file size isn't much to be concerned about. If the movie was 4 times longer, then the total amount of information that would have to be downloaded by viewers would be at least 4 times greater so it might be worth giving up some quality for a smaller file size.
Listen to Samples
|
ENCODINGS THAT WORK |
ENCODINGS TO AVOID |
|
|---|---|---|
|
22kHz, Mono, 32-bit (1.21 MB) (clear, but slightly muffled sound)
22kHz, Stereo, 40-bit (1.25 MB)
22kHz, Stereo, 48-bit (1.29 MB)
22kHz, Stereo, 56-bit (1.33 MB) |
11kHz, Mono, 8-bit (1.10 MB)
11kHz, Stereo, 18-bit (1.14 MB) 11kHz, Stereo, 20-bit (1.15 MB)11kHz, Stereo, 24-bit (1.17 MB) 11kHz, Stereo, 32-bit (1.21 MB)
22kHz, Mono, 24-bit (1.17 MB) |
