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Video Metadata Viewer

Inspect codec, resolution, fps, bitrate, and duration in your browser

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100% private. Your file is processed locally in your browser with WebAssembly — it is never uploaded to a server, stored, or seen by anyone.

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The Video Metadata Viewer reads and displays a video file's complete technical specifications in seconds: container format, video and audio codecs, exact resolution, frame rate, bit rate, total duration, color space, and stream details. Instead of guessing why a clip won't play or upload correctly, you get a precise, MediaInfo-style report you can read, copy, and act on.

Everything runs locally in your browser using mediainfo.js, a WebAssembly build of the MediaInfo library. The tool only parses your file's header and stream metadata, so your video never leaves your device and is never uploaded to a server. It's built for video editors, developers, QA testers, and anyone who needs to verify a file's specs before publishing, encoding, or troubleshooting playback.

Why use this tool

Complete MediaInfo-style report

Get codec, resolution, fps, bit rate, duration, color space, and per-stream details in one clear readout powered by the same MediaInfo engine the pros use.

100% private, nothing uploaded

Files are parsed locally via WebAssembly, so confidential or unreleased footage never leaves your device and is never sent to a server.

Instant results, any file size

Only the metadata header is read rather than the whole video, so even large multi-gigabyte files return specs in a fraction of a second.

Read-only and lossless

Your video is inspected, never modified or re-encoded, so there is no quality loss and your original file is untouched.

How to use the Video Metadata Viewer

  1. Open the tool

    Go to the Video Metadata Viewer page in any modern browser on desktop or mobile.

  2. Add your video

    Drag and drop your video file onto the page or click to select one from your device, such as an MP4, MOV, MKV, or WebM.

  3. Read the metadata report

    View the instantly generated report showing container, video codec, audio codec, resolution, fps, bit rate, and duration across the general, video, and audio tracks.

  4. Copy the details you need

    Copy individual values or the full report to paste into bug tickets, encoding settings, or upload spec checklists.

  5. Inspect another file

    Drop in a new video to analyze it; everything stays in your browser with nothing uploaded between files.

Popular use cases

  • Confirm a clip's resolution, codec, and frame rate meet YouTube, Instagram, or TV broadcast spec before uploading or delivering.
  • Diagnose why a video won't play by checking whether it uses an unsupported codec like HEVC or an unusual container.
  • Verify that an export from Premiere, DaVinci Resolve, or OBS came out at the intended bitrate and fps.
  • Document exact file specs for a QA bug report or client handoff without installing desktop software.

Frequently asked questions

Is the Video Metadata Viewer free to use?
Yes, the Video Metadata Viewer is completely free with no usage limits, watermarks, or paywalls. There is no account, signup, or email required. You can inspect as many video files as you want, as often as you want.
Are my videos uploaded to a server?
No. The tool uses mediainfo.js, a WebAssembly version of the MediaInfo library that runs entirely in your browser. Your video file is read and parsed on your own device, so it is never uploaded, stored, or sent to any server. This makes it safe for confidential, unreleased, or sensitive footage.
What metadata does it show?
It displays the container format, video codec (such as H.264, H.265/HEVC, VP9, or AV1), audio codec (such as AAC or Opus), resolution, frame rate, video and audio bit rate, total duration, aspect ratio, color space, bit depth, and per-stream details. The output mirrors a standard MediaInfo report covering general, video, and audio tracks.
Which video formats are supported?
It reads metadata from common containers including MP4, MOV, MKV, WebM, AVI, FLV, M4V, MPEG-TS, and 3GP, plus standalone audio files. Because mediainfo.js only parses the file header and stream structure, it can identify codecs and properties regardless of whether your browser can actually play the format.
Is there a file size limit?
There is no fixed file size limit imposed by the tool. Since only the metadata header is parsed rather than the full video, even multi-gigabyte files are analyzed almost instantly. The practical limit is your device's available memory, not an upload cap.
How fast is the analysis?
Results appear almost immediately, typically in well under a second. The viewer reads only the file's metadata and stream headers rather than decoding the entire video, so analysis speed is independent of the clip's length or file size.
Does it modify or re-encode my video?
No. The Video Metadata Viewer is strictly read-only. It inspects and reports your file's existing properties without re-encoding, compressing, or altering a single byte, so there is zero quality loss and your original file stays exactly as it was.
Why does my video's metadata matter?
Knowing the exact codec, resolution, frame rate, and bit rate helps you confirm a file meets a platform's upload requirements, diagnose playback or compatibility problems, verify an export came out as intended, and decide whether a clip needs converting before use. It turns a black-box file into a clear, readable spec sheet.

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