Definitions and Statements

Audio Stream

The portion of the file holding the audio data. The audio data might be compressed to save disk space. The data has to be decompressed using an audio decompressor before you can play (hear) it.

BSTR

When "getting" a BSTR property, the memory containing the string is allocated with SysAllocString. When this string is no longer needed, free the memory by calling SysFreeString when working in an environment such as C or C++ that does not automatically delete the memory. VB automatically deletes the memory, so VB programmers do not need to free the memory themselves.

Codec

A COmpressor combined with a DECompressor, or encoder, which allows you to both compress and decompress that same data.

Decompressor

Also known as a decoder, this is a module or algorithm to decompress data.

Video Stream

The portion of the file holding the video data. The video data might be compressed to save disk space. The data has to be decompressed using a video decompressor before you can play (see) it.

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