If you attach a media file to a section and you do not have the decompressor (or ôcodecö), that was used to compress the file, you will receive the following error message:
The media could not be decompressed. A decompressor for this media is not available.
We recommend that you re-record the video using an available codec. For a list of codecs that you have installed, check the Audio Compression Codecs and Video Compression Codecs branches on the Devices tab of the Windows Multimedia Properties control panel.