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File Checker — Free Media File Validator

Verify your media files directly in the browser: codec, resolution, FPS, bit depth, sample rate. Create validation presets and generate PDF reports.

Media file checker for project delivery

Media file checker that reads codec, resolution, FPS, bit depth, sample rate and bitrate directly in the browser, without uploading a single byte. Built for the delivery phase on the control room or production side, when a folder of 200 clips has to be validated against a technical spec before it goes on the show. Define your presets (expected codec, resolution, FPS, bit depth), drop the files, the tool returns a compliant/non-compliant report with full detail on every mismatch. CSV and PDF export available for quality archiving.

Real-world use cases

  • Agency delivery acceptance: confirm that 80 clips delivered by a motion designer are all HAP Q 4K 50p before they hit the media server.
  • Tour preparation: audit a mixed library to flag H.264 files that must be re-encoded to HAP before the first show.
  • Permanent mapping QA: check every new asset against a multi-codec preset (HAP / HAP Alpha / DXV3) before deployment on the production server.
  • Post-mission audit: generate a compliance PDF per client folder to attach to the project close-out report.
  • Import preset from a CSV or tender PDF: pull the client's technical sheet and run the check without retyping anything.

Frequently asked questions

Which codecs and containers are detected?
The tool relies on MediaInfo.js compiled to WebAssembly. The usual video mapping codecs are recognized (HAP, HAP Q, HAP Alpha, DXV3, ProRes, H.264, H.265, JPEG2000) along with MOV, MP4, MKV and AVI containers.
Are the files sent to a server?
No. Metadata is read locally in the browser via WebAssembly. Not a single byte leaves the machine. No server trace.
Can I manage several presets for different projects?
Yes. Create as many presets as you have technical specs. Each preset can accept several codecs and several FPS / bit depth combinations. Presets are stored locally.
Does it handle very large files (>10 GB)?
Yes. Only the header metadata is read, not the full content. A 50 GB file is analyzed in seconds.
Which browser gives the best results?
Recent Chrome or Edge give the best throughput on WASM analysis. Firefox and Safari work. The tool requires a screen at least 1024 px wide.