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MP4 to MPV - Online Video Converter
Convert MP4 to MPV online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert MP4 to MPV
Drop MP4 video here or click to select
MP4
MPV (MPEG-2 / AAC)
About MP4 to MPV
Convert MP4 to MPV. MP4 pairs H.264 video with AAC audio in the ISO base media container. MPV holds elementary MPEG video streams without a container wrapper. No audio can be stored, so pair it with a separate track..
Why convert MP4 to MPV?
- Smaller files with MPV lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
MP4 vs MPV
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | MP4 pairs H.264 video with AAC audio in the ISO base media container. | MPV holds elementary MPEG video streams without a container wrapper. |
When not to convert MP4 to MPV
- Skip MPV for archival masters: lossy compression discards detail, so keep the MP4 original.
- Keep a master copy: repeated exports stack small losses, so archive MP4 before batch MPV shares.
Limits
Starting point: MP4 - H.264 video with AAC audio in one file. H.264 has no alpha channel, so transparency is dropped. No audio can be stored, so pair it with a separate track. Encode MPV (MPEG-2 / AAC) from MP4 at a bitrate near the source, and confirm the audio track before converting.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert MP4 to MPV?
Drop your MP4 file onto this page, choose quality and codec settings, then click Convert. The result downloads as MPV instantly. All processing runs in your browser.
What codec is used for MPV?
The default codec for MPV is MPEG-2 / AAC. You can change the video and audio codec in Advanced mode.
How do you store my files?
We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.