M4V to MP4 (H.264) - Online Video Converter
Convert M4V to MP4 (H.264) online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About M4V to MP4 (H.264)
Convert M4V to MP4. M4V is Apple's DRM-capable MP4 variant used for store-bought video. 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 M4V to MP4 (H.264)?
- Smaller files with MP4 lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
M4V vs MP4 (H.264)
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | M4V is Apple's DRM-capable MP4 variant used for store-bought video. | MP4 pairs H.264 video with AAC audio in the ISO base media container. |
When not to convert M4V to MP4 (H.264)
- Skip MP4 for archival masters: lossy compression discards detail, so keep the M4V original.
- Keep a master copy: repeated exports stack small losses, so archive M4V before batch MP4 shares.
Limits
Starting point: M4V - M4V is Apple's DRM-capable MP4 variant used for store-bought video. Copy-protected purchases cannot be converted; use DRM-free sources. H.264 has no alpha channel, so transparency is dropped. Encode MP4 (H.264 / AAC) from M4V 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.