Welcome to the PC Pitstop File Extension Library, the internet's most complete and comprehensive source for file extension information. Over the years PC Pitstop has developed numerous free scans that diagnose various PC performance issues. Over 200 million scans that have been run all over the world contribute to our file extension libraries.

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Search For File Extensions

File Extension


Supported Extensions


Name Extension
MPEG-4 Movie .mpg4
QuickTime Movie .qtl
Sound Designer II Audio File .sd2
QuickTime Movie .qt
VLC media file (.dv) .dv
Audio CD Track .cdda
QuickTitler Document .etl
MPEG video/audio stream .m2a
DV Movie .dif
QuickTime Movie .mov
PLS Audio Playlist .pls
AMC Movie .amc
FLC Animation .flc
FLC Animation .cel
FLC Animation .fli
Microsoft Video .vfw
Windows Media Player .qht
Windows Media Player .qhtm
AIFF Format Sound .aifc
GSM Audio .gsm
MPEG video/audio stream .m1a
MPEG video/audio stream .m1s
MPEG video/audio stream .m75
MPEG video/audio stream .mpm
SMIL .sml
MPEG Layer-3 Audio .swa
AU Audio .ulw
Dialogic VOX file .rtsp
MPEG video/audio stream .m15
Sony MicroMV File .mmv
MPEG Video .mpv
SMIL Multimedia Presentation .smi
SMIL マルチメディア プレゼンテーション .smil
Name Extension
3GPP Audio/Video .3gpp
Session Description Protocol .sdp
3GPP Audio/Video .3gp
AIFF Format Sound .aiff
AIFF Format Sound .aif
3GPP2 Audio/Video .3gp2
GIF Image .gif
MP4 Video .mp4
Movie Clip .mpa
Movie Clip .mpg
AU Format Sound .snd
Movie Clip .m1v
M3U file .m3u
3GPP2 Audio/Video .3g2
MP3 Format Sound .mp2
AU Format Sound .au
Video Clip .avi
Wave Sound .wav
Adobe ®Table 3.0 .tbl
Movie Clip .mpeg
ACDSee Pro 3 JPEG Bild .thm
MPEG-4 Audio File (Protected) .m4b
QuickTime Movie .mqv
Apple Core Audio Format .caf
VLC media file (.m4p) .m4p
ADTS Audio .aac
ADTS Audio .adts
MPEG-4 Audio .m4a
MP4 Video .m4v
MP3 Format Sound .mp3
VLC media file (.ac3) .ac3
VLC media file (.flv) .flv
VLC media file (.vob) .vob

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Introducing Driver Matic. In May 2007, PC Pitstop announced a revolutionary technology called Driver Matic. Driver Matic allows the installation of a driver with the click of a button. Prior to Driver Matic, all drivers had to be installed differently and required significant user involvement. Now with Driver Matic, a PC can have up to date drivers automatically. Driver Matic has been integrated into both PC Matic and Driver Alert 2.0. Driver Matic finally has made it simple and easy to keep your drivers up to date. Only at PC Pitstop.

To find the latest driver for your computer we recommend running our Free Driver Scan.

Find out how to make your computer faster by running our Free Performance Scan.

Tips from the PitCrew

Tips from the Pit Crew

If a hardware device isn't functioning properly, or if a program or game that you're installing states that it requires newer drivers, a driver update will be in order.

Also, with many wireless adapters it is important to stay current as updates often contain security fixes. A driver update may also improve stability and performance, or may fix issues with games, programs and power management.

New drivers can unlock additional features for a device that may not have been available before. If you receive notification from a program or a manufacturer that a newer driver is available, it would be a good idea to check the release notes and see what’s different than the driver you’re already using.

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