Add your MP4 file
Drop one or more .mp4 files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
MP4 to MPG
Pulling the soundtrack out of a .mp4 video into .mpg audio keeps what you can hear and drops the picture entirely. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop MP4 files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting MP4 video to MPEG video
Pulling the soundtrack out of a .mp4 video into .mpg audio keeps what you can hear and drops the picture entirely. An .mp4 file is a multimedia container that bundles compressed video, audio, subtitles, and chapter data into a single stream-friendly package. It is the default delivery format for nearly every phone, camera, and video platform, which makes .mp4 the safest target when a clip has to play everywhere.
The .mpg extension is the three-letter spelling of .mpeg, applied to identical MPEG-1 or MPEG-2 program stream data. Files named .mpg and .mpeg are interchangeable at the byte level, so players and converters treat them the same and differ only in the label they display. For this route the practical draw is opens in everything from Windows Media Player to ffmpeg and decades of tooling make its behavior thoroughly predictable — balanced against dated compression wastes space compared with any modern codec, which is worth knowing before you commit a large batch.
Why convert MP4 to MPG?
The usual reason to take .mpg audio out of a .mp4 file is that only the sound matters — a talk, interview, song, or podcast segment. Keeping the video stream would waste storage, and a dedicated audio file is easier to trim, tag, and play. On the source side, fewer track, attachment, and chapter features than Matroska; on the target side, the payoff is opens in everything from Windows Media Player to ffmpeg, which is exactly what you want for working with recordings from PC TV capture cards.
MP4 vs MPG at a glance
| Aspect | MP4 video (.mp4) | MPEG video (.mpg) |
|---|---|---|
| Format type | Container — quality depends on the codecs and settings inside | Container — quality depends on the codecs and settings inside |
| How it stores data | typically carries H.264/AVC or H.265/HEVC video with AAC audio, though the box structure also accepts AV1, MP3, and timed-text tracks | byte-for-byte the same program stream format standardized in ISO/IEC 11172 and ISO/IEC 13818 |
| Strongest at | publishing video to the web, social media, or a client who has not specified a format | working with recordings from PC TV capture cards |
| Weak spot | fewer track, attachment, and chapter features than Matroska | dated compression wastes space compared with any modern codec |
| Metadata | iTunes-style metadata atoms (title, artist, cover art) plus XMP and per-track language tags; ID3 is not native to the container | nothing beyond the raw stream itself, so titles and descriptions live only in the filename |
Pick MPG as the output
Select .mpg in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if MPG is selectable, the route is real and validated.
Convert on your device
Press Convert. A WebAssembly FFmpeg build demuxes the audio track and re-encodes it locally; the video stream is simply discarded.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid MPG file. Outputs keep the original filename with the .mpg extension.
MP4 to MPG questions, answered
Will converting MP4 to MPG lose quality?
Since mp4 is container-oriented and mpg is container-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .mpg itself requires.
Is it private to convert MP4 files here?
Yes — the .mp4 file is processed inside your browser tab and never uploaded. A WebAssembly FFmpeg build demuxes the audio track and re-encodes it locally; the video stream is simply discarded. Close the tab and the file is gone from memory.
Where will the MPG file work?
Any application that accepts .mpeg files accepts .mpg without complaint, since the difference is purely historical. That covers VLC, Windows Media Player, and QuickTime Player, but not the HTML5 video element in any browser.
Will the MPG file be bigger or smaller than my MP4?
Much smaller — the video stream is usually 80–95% of a .mp4 file's weight, and it is discarded entirely. The remaining audio is re-encoded at the bitrate implied by your quality setting.
What happens to the metadata in my MP4 file?
This converter strips container metadata deliberately (the FFmpeg command runs with metadata mapping disabled) so exported files do not leak recording details. In the source, iTunes-style metadata atoms (title, artist, cover art) plus XMP and per-track language tags; ID3 is not native to the container; none of it is transmitted anywhere because the file never leaves your browser.
Can I convert MPG back to MP4?
Yes — the reverse route exists as a separate tool. Bear in mind that round-tripping .mp4 → .mpg → .mp4 is not a perfect undo when any lossy step is involved; keep your original if fidelity matters.