Media InspectorCheck a video's codec & metadata
See codec, frame rate, scan type, audio and all metadata of any file — locally, nothing uploaded.
What is a media inspector?
A media inspector reads the technical metadata of a media file so you know exactly what you were sent: the container (MOV, MP4, MXF, MKV…), the video codec and profile, resolution, display aspect, frame rate (and whether it's constant or variable), scan type and field order, bit depth, chroma subsampling, and color space / transfer / matrix (Rec.709, PQ, HLG) when present — plus each audio track's codec, channels, sample rate and bit depth, and any timecode. Media Inspector runs MediaInfo, the same engine as the desktop app, compiled to WebAssembly, entirely in your browser. It reads only the small metadata byte-ranges of the file, so even multi-gigabyte MXF or MOV files are inspected in seconds and nothing is ever uploaded.
How to use it
- Drop one or several media files onto the page (or click to choose).
- Read the grouped report — the key fields (codec, resolution, fps, scan, audio) are highlighted; open "all fields" for the complete set.
- Copy or download a clean report per file, or export a combined CSV of key fields to check a batch of deliverables against a spec.
Which formats & when
Use it whenever a file arrives and you need the truth about it before importing or delivering: confirming a master is the right codec and frame rate, checking a client's MP4 is actually H.264 and not VFR, verifying ProRes flavor and bit depth in a MOV, reading an MXF's timecode, or auditing a folder of deliverables. It reads MOV, MP4, MXF, MKV, AVI, MTS/M2TS, WMV, FLV, WAV, MP3 and most professional formats.
Frequently asked questions
What formats does it read?
It uses MediaInfo (the same engine as desktop MediaInfo) compiled to WebAssembly, so it reads MOV, MP4, MXF, MKV, AVI, MTS/M2TS, WMV, FLV, WAV, MP3 and most professional containers — container, video and audio streams, timecode and more.
Does my file upload anywhere?
No. The file is read in your browser by requesting only the small metadata byte-ranges — it is never loaded whole and never uploaded. Only the MediaInfo engine is fetched once and cached for offline use.
How do I check a video's codec or frame rate?
Drop the file (or several) onto the page. The report shows the container, video codec, resolution, frame rate, scan type, bit depth and chroma, plus each audio track's codec, channels and sample rate — and a complete all-fields view.
Is it free?
Yes, free with no sign-up. Everything runs locally in your browser.