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Support-DVD5-FAQ > General-5
 
faq
5.How to change video and audio in a multiple video and multiple audio MPEG file?

In the HTML help section on the Clip Context Menu of the Timeline, it says

"You may also change video and audio for a multiple video and multiple audio MPEG file."

Please tell me: What is a multiple video and multiple audio file? And What may be changed?

 

An MPEG file is usually composed of a video stream and multiple audio streams, multiplexed together as one data stream of video and audio packets.

For example, you are working with a multiple audio MPEG file when you play a DVD movie with a set of audio tracks for several languages.

In a recording of digital video broadcasting, one MPEG file usually contains multiple video and multiple audio streams, each pair of which represents on TV programming channel.

To identify those video and audio streams, MPEG files use one distinct integer called stream ID for each video or audio stream. This integer is stored in the packet header.

In the MVW, you can select video and/or audio by switching the stream ID; and this switching is done via the "Properties" entry in the context menu of the Input monitor or in the context menu of a clip on the Timeline.

 

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