Operation Manual

Chapter 9: MPEG-4 Options and Settings
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Description
The simplest and most widely used and supported AAC audio format.
— Main Profile (MAIN)
The same format as LC (above) with an added backward prediction.
NOTE: Depending on the player where you intend to hear the resulting stream, either choice
uses a specific set of tools to encode the audio stream.
You should make your choice based on the requirement of the playback software or device.
The most widely supported format is LC profile.
 The Audio Bitrate settings provide a drop-down box with choices shown in.
Video Cropping
 Provides options for setting the size and aspect ratio of your chosen video
output (Figure 93).
 When you enable cropping, the system automatically switches the video size
to FULL and the cropping measurements default to the FULL size.
 From these settings, you can set a custom cropping size.
Figure 93. MPEG-4 Video Cropping Settings
Watermarking
 Provides options for placing a watermarked graphic over your video output
(Figure 94).
 You can adjust the color balance, size, and opacity of the graphic.
NOTE: You can only watermark a 24-bit bmp. The system does not accept any other image
formats.