You can add a new default reader in Squeeze by following these steps:
- Go to Edit > Preferences > then the Advanced tab.
- Under "Default Reader" click the Add button and type in the file extension you wish to use, such as "MOV" (without a period or quotes) under "Filename extension suffix"
- Choose your Preferred reader, such as QuickTime, and then click OK.
- Please re-start Squeeze and re-import your source file.