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MPEG4 MP4
Free online converter

Convert MPEG4 to MP4

Convert now
MPEG4 to MP4 converterFREE
Drop a .MPEG4 file here
or pick one - we convert it to .MP4 and give you the file to download

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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How to convert MPEG4 to MP4

  1. Add your .MPEG4 file - drop it in the box above or click to browse.
  2. Convert it to .MP4 in a few seconds.
  3. Download your new .MP4 file.

What to expect

  • Renaming does not touch the video or audio data - quality is fully preserved.
  • Do not confuse .mpeg4 with .mpeg or .mpg; those are older MPEG-1/2 program streams and require actual re-encoding to become .mp4.
  • If playback still fails after renaming, the problem is a missing codec (e.g. H.265/HEVC), not the extension - install the HEVC codec or use VLC.

Frequently asked questions

Can I rename .mpeg4 to .mp4 without breaking the video?
Yes. The file bytes are unchanged; renaming is safe and fully reversible - you can rename back at any time.
Why does my TV play .mp4 but refuse .mpeg4?
Smart TVs check the file extension and reject unrecognized ones even when the content is identical. Renaming to .mp4 fixes this instantly.
Do I need HandBrake or ffmpeg just to change the extension?
No - a simple rename is enough. Use ffmpeg or HandBrake only if you also want to change the codec, resolution, or bitrate.
Does the rename work on macOS and Linux?
Yes. On macOS use Finder; on Linux run mv video.mpeg4 video.mp4 in the terminal.
Learn about the formats: .MPEG4 · .MP4