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MP4 to MTS - Online Video Converter
Convert MP4 to MTS online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert MP4 to MTS
Drop MP4 video here or click to select
MP4
MTS (H.264 / AAC)
About MP4 to MTS
Convert MP4 to MTS. MP4 pairs H.264 video with AAC audio in the ISO base media container. MTS is the AVCHD camcorder wrapper for H.264 on flash media. Spanned clips split at 4 GB; join them before converting..
Why convert MP4 to MTS?
- Smaller files with MTS lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
MP4 vs MTS
| 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. | MTS is the AVCHD camcorder wrapper for H.264 on flash media. |
When not to convert MP4 to MTS
- Skip MTS 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 MTS shares.
Limits
Starting point: MP4 - H.264 video with AAC audio in one file. H.264 has no alpha channel, so transparency is dropped. Spanned clips split at 4 GB; join them before converting. Encode MTS (H.264 / 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 MTS?
Drop your MP4 file onto this page, choose quality and codec settings, then click Convert. The result downloads as MTS instantly. All processing runs in your browser.
What codec is used for MTS?
The default codec for MTS is H.264 / 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.