Video Fingerprint Checker & MP4 Converter
Upload a video you own. See the real before and after, export a standard MP4, compare file fingerprints and save the evidence in one clean workspace.
Your video workspace
Start with footage you own or are licensed to use. No account required.
Drop a video here or select a file
MP4, MOV, M4V, MKV, WEBM · Up to 50 MB
Choose an MP4 profile
Standard video-quality options, with the source composition preserved.
Before and after
Compare the actual picture, audio, size and file fingerprints of your own versions.
Local fingerprint comparison
For an existing after-video, or for an output created here, calculate byte-level and approximate visual fingerprint evidence. All fingerprint calculations below run inside your browser.
Request removal of an incorrect copyright claim
For a video you created, licensed, or represent: prepare a factual claim-review request with your evidence and file SHA-256. This does not change ownership, strip attribution, bypass fingerprint matching, send an appeal, or remove a claim automatically.
Privacy: This section operates in your browser and does not submit the information to this website’s server. Downloads remain on your device. This is general workflow assistance, not legal advice.
How to use the free video fingerprint checker
- Choose your original. Drag an MP4, MOV, M4V, MKV or WEBM file into the upload area. You must own or have permission to process the clip. Maximum size is 50 MB.
- Choose an export quality. Pick high quality, balanced or compact. The standard MP4 conversion requires FFmpeg to be installed on the website server. Original footage is kept in the before preview.
- Inspect before and after. Watch both versions side by side. If you already have a second version from your own test lab, upload it instead of running the converter.
- Run the fingerprint audit. Generate SHA-256 values, five sampled visual difference hashes and a clearly labeled similarity estimate.
- Save the report. Download the after-video or a machine-readable JSON audit to attach to your content-matching system’s regression suite.
File fingerprints vs. visual fingerprints
A cryptographic SHA-256 digest describes the exact file bytes. It is useful for confirming that two copies are binary identical, but even a conventional re-encode can produce a different checksum. This does not make someone else's work original or remove copyright obligations.
The visual comparison here uses difference hashes (dHash) from five frames at equivalent relative timestamps. It reports an approximate likeness score based on those samples. It cannot establish that a video is copyright-free, and its simplified sampling may miss edited clips, timing changes or unrelated content that happens to have similar frames.
For a production content-protection platform, a layered system is stronger: exact file checks; visual frame/sequence matching such as Meta's open-source vPDQ; audio fingerprints; and a human review queue. Each layer needs validation on licensed test media and real negative controls. This website's simple dHash estimate must not be confused with PDQ, TMK, Chromaprint or a platform's own detection models.
Video format and export options
MP4 with H.264 video and AAC audio is a widely supported baseline for web players and social destinations. High, balanced and compact exports select practical resolution ceilings; lower tiers can reduce file size, but the exact result depends on your source footage.
| Setting | Max video size | Best use |
|---|---|---|
| High quality | 1920 × 1080 | Keeping more visual detail for a review master |
| Balanced | 1280 × 720 | General web upload and sharing |
| Compact | 854 × 480 | Smaller previews for lightweight workflows |
Video output is limited to 20 minutes and 50 MB of input. The site may decline a format that your browser cannot preview even if the FFmpeg server understands it. A server without FFmpeg can still run the local before/after file comparison.
A practical workflow for your own copyright detector
Create a reference library containing videos that you filmed, licensed, or deliberately generated for testing. Keep the original copy and a set of ordinary encodings for quality-control purposes. Evaluate whether your detector correctly links related clips, whether unrelated clips avoid false matches, and whether reviewers have enough context to act.
A proper test record should include an investigation ID, file SHA-256, visual and audio detector scores, model versions, the reference asset ID, and the final review decision. Compare false-positive rate, recall, review volume and processing latency on each release. No-match means only that your registered reference library did not return a match; it is not a legal clearance certificate.
How to dispute an incorrect copyright claim on your own video
If a video you created or lawfully licensed has been claimed incorrectly, gather supporting documents first. The local Rights Review form above can prepare a structured case summary, a video SHA-256 and a draft request for human review. It will not contact the platform or automatically cancel any claim.
Use source recordings, dated project files, a contract, a license specifying the relevant usage and territory, or a signed authorization from the copyright owner. Review the exact claim notice and the service’s own dispute procedure. Filing a false claim or misleading counter-notification may have serious consequences, so seek professional advice where needed.
What it cannot do: remove another creator’s rights, guarantee that an upload is permitted, manipulate ownership signals, or determine whether Content ID-style detection will identify your video. The downloadable documents are unverified user declarations until an authorized reviewer confirms the evidence.
What happens to my uploaded video?
The browser computes SHA-256 and five-frame dHash values locally when you request an audit. A standard conversion sends the file to the server temporarily. The server conversion route cleans its temporary folder after each request and does not intentionally create a media library. Normal web-server and infrastructure logs may still exist.
Do not upload private client recordings without authorization. This tool does not remove watermarks, strip ownership, test third-party copyright claims or guarantee monetization eligibility. Always obtain the underlying rights before publishing or broadcasting footage.
Video fingerprint FAQ
Can I compare two video files for free?
Yes. Upload an original and a second version you own, then run the browser-side SHA-256 and five-frame dHash comparison. You can download the JSON evidence report without creating an account.
Does changing an MP4 file hash remove copyright?
No. A file hash identifies bytes, not legal ownership. Encoding a video differently may change its SHA-256 value while leaving copyright and content-based similarity unaffected.
Does this tool check YouTube, TikTok, Instagram or Facebook copyright systems?
No. It cannot access those platforms’ private fingerprint databases or claim whether a platform would identify a video. It performs limited local quality assurance on videos you are authorized to process.
What happens to the videos I upload?
Local SHA-256 and frame sampling run in your browser. If you choose MP4 conversion, the selected source file is sent to this site’s server for temporary FFmpeg processing; the endpoint removes its temporary files when processing finishes. Do not upload confidential footage to a public service unless you trust its operator.
Why do before and after look the same but have different hashes?
An MP4 conversion normally re-encodes pixels and audio using a selected quality profile. The picture can look similar while binary encoding differs. A perceptual detector may still recognize the work.
Is the visual similarity number a copyright verdict?
No. This page samples five synchronized frames using 64-bit difference hashes and averages their bit similarity. It is a rough QA metric, not a calibrated copyrighted-content detector and cannot establish clearance.
Can I remove a copyright claim on a video I own?
An incorrect claim may be challenged through the platform’s official review process. This tool prepares a draft rights-review request and evidence summary, but it does not remove a claim, verify ownership, or submit an appeal. You must provide truthful proof such as source recordings, valid license documentation, or an authorization letter.
Need a production-ready video protection system?
This public tool is a lightweight inspection workspace, not a replacement for a content-rights engine. For larger video products, detection services need a secure reference library, background media workers, calibrated matching, permissions and a rights-dispute process.
Discuss a custom video platform