Computer Concepts Eagle M2, User Manual

Page: 41 / 66

5.
TakeTwo
Rate
This menu is in two parts – frame rate and audio frequency.
You have a possible choice of12.5 or 25 fps, depending on the
hardware resources available.
25 fps gives better results but requires more memory and processor
power. It is only available on top specification computers. You
cannot use ESCaPE compression with 25fps movies; you must use
the slower Acorn compression routines.
7kHz/11kHz/22kHz/44kHz
This sets the sampling frequency. Increasing the sampling
frequency, increases the sound quality but also uses more memory.
If you intend to replay the movie using the computer's internal
speaker,
11kHz
gives acceptable quality and processor overhead.
For more information on sampling frequency, refer to Introduction in
the AudioWorks manual.
You also need to set the mixer controls in AudioCtrl. Refer to the
6. Audio options section of this manual.
Size
At present the Replay format has a fixed image size of 160x128
pixels. Future developments may permit other image sizes. (The
window size when replaying movies is 320x256 pixels.)
Brightness and contrast controls
These modify the brightness and contrast of a grabbed Sprite or a
paused image in the live display window and let you optimise the
incoming video signal.
To set the controls before grabbing an image click on the pause
button. You can now change the brightness and contrast by using
the mouse to "turn" the knobs. The centre position (0%) represents
no change.
34