User guide

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Fine-tuning your customized encoding profiles
Customizing your Ligos MPEG bit rate settings
1 Click the Bit Rates tab.
2 Under Audio (Kbps), select a bit rate for your compressed audio (for .mpg
and .mpa files only).
3 To select a bit rate type for your MPEG video, do one of the following:
$ Select Constant if you want your video to be compressed at a constant bit
rate. Enter the bit rate you want to use for your video in the box provided.
Your video is compressed at exactly the bit rate you enter. However, if your
video is very complex (such as scenes with many colors or sharp edges),
you’ll need to specify a high bit rate to avoid having frames of very blocky
video.
$ Select Variable if you want your video compressed at varying bit rates based
on the complexity of the video. Enter the absolute highest bit rate for your
video in the
Maximum box, and the average target bit rate in the Keep
average bit rate at
box.
¡Important The maximum recommended DVD-compliant bit rate is 8000
Kbps, which should give you good results with most DVD authoring
programs. If you specify a higher bit rate, be aware that it may not be
supported by your authoring program. For charts of recommended bit rates,
see “Recommended MPEG data rates for distribution on DVD-R or CD-R”
on page 267.
4 If you are encoding a variable bit rate video, you can choose to control the
bit rate with a quantization scale value instead of an average bit rate. To