Skip to content
Convertto

Media File Info — Duration, Resolution & Codec Support

Read the duration, dimensions, frame rate and playability of an audio or video file.

This reads an audio or video file's duration, resolution, aspect ratio and average bitrate by decoding its metadata with your browser's own media engine. Because it uses the same decoder that would play the file, a successful reading also proves the file is playable in this browser — and a failure identifies an unsupported codec rather than a corrupt file.

Runs in your browser
Privacy
Runs entirely in your browser — nothing is uploaded
Cost
Free, unlimited, no sign-up

Frequently asked questions

Why can this not tell me the exact codec?

Browsers deliberately do not expose the decoded codec string of a local file — the media element reports geometry and duration only. What a successful read does prove is that your browser can play it, which is usually the actual question behind "what codec is this".

Why is the duration reported as unknown?

WebM files written by MediaRecorder often lack a duration in the header, because the length was not known while recording. The file plays fine; the header simply says nothing. Re-encoding it with the video converter writes a correct duration.

How to use the media file info

  1. 1Select your media file — the file stays on your device and is never uploaded.
  2. 2Press Run, then download the result when it is ready.

Embed this tool

Put the working media file info on your own site. It runs in your visitors' browsers exactly as it does here — free, no account, nothing uploaded.

Share this tool

Related tools

Remove Audio from VideoStrip the audio track from a video without re-encoding the picture.Video to MP3 ConverterExtract the audio track from a video and save it as MP3, WAV, AAC or OGG.Audio ConverterConvert audio between MP3, WAV, AAC, OGG and FLAC in your browser.Audio TrimmerCut a section out of an audio file, with optional fade in and out.Video CompressorShrink video file size with adjustable quality — locally, with no upload limit.Video ConverterConvert video between MP4, WebM and MKV entirely in your browser.

Last updated

More browser & device