User guide

267

Recommended MPEG data rates for distribution on DVD-R or CD-R

Recommended MPEG data rates for

distribution on DVD-R or CD-R

The following charts show the data rate you should select when creating MPEG

files to get the best video quality for your DVD projects. These data rates are

calculated according to the length of your project and the size of your distribution

medium. When disk space is not an issue, such as when your project is short,

you’ll get the best quality using a high constant bit rate (that is, 7 Mbits/sec).

When disk space is at a premium, you should use a variable bit rate.

At data rates of 2 Mbits/sec and higher, you can use Adobe Premiere to either

capture or export the desired video to an MPEG-2 Elementary (.m2v) file (see

“Defining your Capture settings” on page 55 and “Performing a Matrox realtime

export to disk” on page 65). At data rates lower than 2 Mbits/sec, you’ll need to

create an MPEG-1 file. You can do this using the Ligos MPEG encoder provided

with Matrox MediaExport (see Chapter 9, “Using Matrox MediaExport”).

¦NoteThese charts assume that your DVD project includes 48-kHz, 16-bit

stereo audio. Be aware that your DVD authoring program may create additional

files that will limit the amount of space available for your DVD project.

Constant bit rate

Variable bit rate

Time (minutes)

Recommended data rates for 4.7-GB DVD