M2TS to MP4 (H.264) - Online Video Converter
Convert M2TS to MP4 (H.264) online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About M2TS to MP4 (H.264)
Convert M2TS to MP4. M2TS is the Blu-ray transport stream carrying H.264 with PCM or DTS audio. MP4 pairs H.264 video with AAC audio in the ISO base media container. H.264 has no alpha channel, so transparency is dropped..
Why convert M2TS to MP4 (H.264)?
- Smaller files with MP4 lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
M2TS vs MP4 (H.264)
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | M2TS is the Blu-ray transport stream carrying H.264 with PCM or DTS audio. | MP4 pairs H.264 video with AAC audio in the ISO base media container. |
When not to convert M2TS to MP4 (H.264)
- Skip MP4 for archival masters: lossy compression discards detail, so keep the M2TS original.
- Keep a master copy: repeated exports stack small losses, so archive M2TS before batch MP4 shares.
Limits
Starting point: M2TS - M2TS is the Blu-ray transport stream carrying H.264 with PCM or DTS audio. High-bitrate files take longer; confirm audio track selection first. H.264 has no alpha channel, so transparency is dropped. Encode MP4 (H.264 / AAC) from M2TS 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.