Video File Info Media
Check a video’s resolution, duration, aspect ratio and size.
Video File Info is a free online tool that check a video’s resolution, duration, aspect ratio and size. It runs entirely in your web browser using plain JavaScript, so files are processed on your own device and never uploaded to a server. There is no sign-up, no file size limit imposed by the site, no watermark and no paid tier.
- Price
- Free: no account, no quota, no watermark
- Category
- Media
- Where it runs
- In your browser, on your device
- Files uploaded
- None
- Technology
- plain JavaScript
- Settings
- None, it just works
- Works offline
- Yes, after the first visit
About Video File Info
Everything here is read by handing the file to your browser's own video decoder and asking what it found, so support tracks whatever your browser can already play: MP4, WebM, MOV and OGV in most cases. That approach has a firm limit worth knowing. It reports what the decoder exposes, which is the picture dimensions, the duration and the container type, and not the things that need the file demuxed properly: the codec in use, the frame rate, the chroma subsampling, or per-track detail in a file with several audio streams. The bitrate shown is an average worked out from the file size and duration rather than a figure read from the file, so on a variable-bitrate encode it describes the whole file and not any particular second of it.
How to use it
- Everything video file info needs is on this page.
- Your input is processed locally and discarded when you close the tab.
Under the hood
| Runs on | plain JavaScript: runs the whole thing |
Questions
Which browsers does this work in?
It relies on plain JavaScript, supported in current versions of Chrome, Edge, Firefox and Safari. Features needing camera, microphone or screen access will ask permission first, and that prompt comes from your browser rather than from this page.