MPG MP4
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Convert MPG to MP4

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MPG to MP4 converterFREE

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Tested on macOS, Windows & Linux
Last verified Nov 2026

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How to convert MPG to MP4

  1. Add your .MPG 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

  • Conversion is a full re-encode - MPEG-2 video must be decoded and compressed again to H.264, introducing slight quality loss; avoid converting the same file multiple times.
  • File size typically drops 60-80% - a 1 GB DVD-quality .mpg often becomes 200-400 MB at the same perceived quality.
  • Audio is also re-encoded - .mpg files often carry MP2 or AC-3 audio, which becomes AAC inside the .mp4 container.

Frequently asked questions

Will I lose quality converting MPG to MP4?
Yes, slightly - re-encoding every frame introduces minor loss, but at HandBrake's defaults or ffmpeg -crf 23 the difference is invisible to most viewers.
Can I convert MPG to MP4 with no quality loss at all?
No - MPEG-2 video is not natively supported inside the MP4 container, so a re-encode to H.264 or H.265 is required; for archival purposes, keep the original .mpg.
How long does conversion take?
A 1-hour DVD-quality .mpg converts in roughly 5-20 minutes on a modern CPU with HandBrake; using hardware encoding such as h264_nvenc on Nvidia can cut that to under 2 minutes.
Does converting to MP4 improve the video quality?
No - conversion cannot add detail that was not in the original file; the best result is near-identical quality at a much smaller file size.