User`s guide

2 Importing and Exporting Video

Working with AVI Files

VideoandImageProcessingBlocksetenables you to work with video data

within the Simulink environment. Before you can analyze or operate on your

data, you must import it into your Simulink model. Blocks from the Sources

library, such as the From Multimedia File block, can help you with this type

of task.

This section includes the following topics:

• “Importing and Viewing AVI Files” on page 2 -2 -- Use the From Multimedia

File block to import video data into your Simulink model

• “Exporting to AVI Files” on page 2-6 -- Use the Write AVI File block to

export video data to an AVI file

• “Annotating AVI Files w ith Video Frame Numbers” on page 2-9 — Use the

InsertTextblocktoadddescriptivetexttoavideo

• “Annotating AVI Files at Two Separate Locations” on page 2-13 — Use the

Insert Text block to add text to a video at different locations

• “Saving Portions of an AVI File to Separate Files” on page 2-18— Use To

Multimedia File and Enabled Subsystem blocks to save portio ns of one

AVIfiletothreeseparateAVIfiles

Importing and V iewing AVI Files

In this section , you use the From M ultimedia File block to imp ort an AVI file

into y our model a nd the Video Viewer block to view it:

1 Create a new Simulink model, and add to it the blocks shown in the

following table.

Block Library Quantity

From Multi media File Video and Image Processing

Blockset > Sources

Video Viewer Video and Image Processing

Blockset > Sinks

2-2