.QPX File Extension
QuickTime Player Extension
| Developer | Apple |
| Popularity |
2.3 | 3 Votes |
What is a QPX file?
A QPX file is an extension for earlier versions of Apple QuickTime Player, a media player bundled with Mac OS X. It contains information that extends the capabilities of QuickTime Player, such as support for video formats that the media player does not natively support. QPX extensions allowed users of early QuickTime Player versions to customize the media player to handle a broader range of media formats depending on their needs.
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QPX extensions function similarly to plugins, which third-party vendors or Apple developed to integrate into QuickTime Player, allowing the software to expand its media playback capabilities without requiring a full program update. The files were typically small in size, so users could more easily add or remove them based on their needs.
QPX extensions were beneficial during QuickTime Player's earlier years in the late 1990s and 2000s when compatibility with emerging media standards and formats frequently required extensions. However, the media player no longer supports QPX files.
How to open a QPX file
You can only open QPX files with earlier versions of Apple QuickTime Player. Modern versions of the media player do not support the QPX format.
Programs that open or reference QPX files
Visual FoxPro Compiled Query Program
| Developer | Microsoft |
| Popularity |
2.0 | 1 Vote |
A QPX file may also be a query program compiled from a .QPR source code file by Microsoft Visual FoxPro, a database management system. It is the executable version of a database query, containing bytecode that Visual FoxPro runs without needing to recompile the source code. QPX files help improve performance, especially where frequent query execution is necessary, since compiled queries execute faster.
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NOTE: Microsoft discontinued Visual FoxPro in 2007.
How to open a QPX file
QPX files are not meant to be opened. Instead, Microsoft Visual FoxPro executes the QPX files to run queries.
Programs that open QPX files
Quattro Pro QuickColumn Settings File
| Developer | Corel |
| Popularity |
2.0 | 1 Vote |
File created by Quattro Pro spreadsheet software, which is part of the WordPerfect Office suite; saves QuickColumn (Tools → Data → QuickColumn) settings used for importing external data into spreadsheet columns; allows reuse of the same settings across multiple input files.