MP4 viewer
To open an MP4 file, drop it in the box below. It opens straight away, even with no extension or the wrong one. Your browser opens it on your device: nothing is uploaded.
Open in
Opened on this device, never uploadedDrop or paste another file at any time
What you see
| MP4 in the viewer | |
|---|---|
| Player | Your browser’s own: play, seek, full screen, picture in picture |
| Details | Length and picture size |
| H.265 (HEVC) | Plays only where the browser and device can decode it |
| Next | Trim, transcribe, blur faces, convert |
| Extensions | .mp4, .m4v |
| Upload | None: opened on your device |
What is an MP4 file?
In short
MP4 is the most common video format, made by phones, cameras and editing apps. It usually holds H.264 or H.265 video and AAC sound.
The video in your browser’s own player, with its length and picture size. If your browser has no decoder for the video inside, the viewer says so.
How to open an MP4 file
- Add your MP4. Drop the file in the box, choose it or paste it.
- Look at it. The video in your browser’s own player, with its length and picture size. If your browser has no decoder for the video inside, the viewer says so.
- Take it further. Open in hands it, in a new tab, to Video trimmer, Speech to text or Blur faces.
Questions
The video is probably H.265 (HEVC), which some browsers cannot decode. Convert can make a WebM or another MP4 your browser plays.
No. The viewer runs in your browser and opens the file on your device. Nothing is sent anywhere.