Drop any file to identify it
No upload. No signup. No sending your file halfway across the internet.
We tell you what it is, right here in your browser.
Drop it!
Let go to identify this file.
Couldn't identify this file
Need to convert it? fwip it →
The .mpeg extension is simply the unabbreviated version of .mpg. Back when 8.3 filenames were a hard constraint (DOS, early Windows), the three-character .mpg won by necessity. Once long filenames arrived, some tools started writing .mpeg instead. The contents are identical — same MPEG-1 or MPEG-2 video, same container, same codecs.
Modern operating systems and media players treat .mpg and .mpeg interchangeably. If you receive a .mpeg file that won't open, renaming it to .mpg (or vice versa) is worth trying, but in practice any tool that handles one handles both.
If you're working with .mpeg files and need something more modern, convert to MP4 with HandBrake or FFmpeg. The quality improvement per megabyte is substantial — H.264 compression is roughly twice as efficient as MPEG-2 at the same visual quality.