MATLAB COMPILER RELEASE NOTES User's Guide download pdf (Page 648)

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For example, to use the Intel YUV codec, use the four-CC code:

aviobj = avifile('myvideo.avi', 'compression', 'IYUV');

Other codecs can be found at http://fourcc.org.

Note there are restrictions with some codecs. For example, some codecs can only be used

with grayscale images.

Regular Expressions

MATLAB 7.2 introduces the following new features for regular expressions in MATLAB.

For more information on these features, see Regular Expressions in the MATLAB

Programming documentation.

New Features

• Dynamic regular expressions — You can now insert MATLAB expressions or

commands into regular expressions or replacement strings. The dynamic part of the

expression is then evaluated at runtime.

• Generating literals in expressions — Use the new regexptranslate function when

you want any of the MATLAB regular expression functions to interpret a string

containing metacharacters or wildcard characters literally.

• New parsing modes — Four matching modes (case-sensitive, single-line, multiline,

and freespacing) extend the parsing capabilities of the MATLAB regular expression

functions.

• Warnings display — Use the new 'warnings' option with the regular expression

functions to enable the display of warnings that are otherwise hidden.

Compatibility Considerations

Calling regexp or regexpi with the 'tokenExtents' and 'once' options specified now

returns a double array instead of a cell array. You may need to change your code to

accommodate the new return type.

Setting Environment Variables

Use the new setenv function to set the value of an environment variable belonging to the

underlying operating system.

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