.usf file: how to open it on Windows
5 Windows apps register the .usf extension. Install one of them to open the file with a double-click.
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Subtitle EditSubtitle Edit is a free and open source editor for video subtitles.
- SPlayer
Neat, Safe, High Performance
- Pure Codec
Codec pack for HD fans.
- 迅雷影音
Enjoys excitement with professional play.
- PotPlayer
Powerful multimedia player that supports a variety of different video codecs and formats.
Related guide: Change the default app for a file type in Windows