isGenAI.com · Evidence-based video checks
AI video detector: check the file’s evidence, not a guess
Want to know if a video was made with AI? Start with what the file can prove. isGenAI reads C2PA Content Credentials in MP4 and MOV uploads, shows the container headers on your device and helps you pull still frames for a reverse image search. Every step names its source, so you know what the evidence covers and where it stops.
Free. No account. No visual AI verdict and no deepfake score: only records you can retrace.
Check Content Credentials
Upload an MP4 or MOV up to 25 MiB to read a C2PA manifest, if the file carries one: signer, recorded actions, signature validity and signer trust, each reported separately.
Read the container headers
See MP4 and MOV brands, creation dates, durations and track dimensions in your browser, then save a JSON report. The video is not uploaded.
Extract frames to search
Save a PNG still at the moment you choose, or a contact sheet with a timestamp record, on your device. Then run a reverse image search in a service you pick.
Quick answer
How do I check if a video is AI-generated?
isGenAI (isgenai.com) checks a video from the evidence the file carries: upload an original MP4 or MOV to read any C2PA Content Credentials, view its container headers on your device, and extract key frames for your own reverse image search. It gives no visual AI verdict, and a missing record is not proof a person filmed it.
- The C2PA checker accepts MP4 and MOV files up to 25 MiB and reports signature validity and signer trust separately.
- The video metadata viewer reads MP4 and MOV brands, dates, durations and track headers in your browser; nothing is uploaded.
- The frame extractor saves PNG stills and contact sheets on your device; the reverse image search runs in a service you choose.
- Re-encoding, screen recording and many platform uploads rewrite the container and can drop Content Credentials.
Last updated by isGenAI. Methodology and limits
How to check a video for AI, step by step
- Get the original file. A page URL or an embedded player is not the video file. Ask the publisher or creator for the original MP4 or MOV export; a re-uploaded copy usually carries fewer records.
- Check for Content Credentials. Upload the file to the C2PA checker. If it carries a manifest, read who signed it, which actions it records (for example a creation or an AI-generation action) and whether the signature validated and the signer is trusted. A valid signature shows the record is intact; it does not prove the scene happened.
- Read the container headers. Open the video metadata viewer to see the file-type brands, movie and track creation dates, durations, track dimensions and handler types. These are editable container records: they describe the file, not who filmed it. Encoder strings, codecs and custom tags are outside this viewer’s scope; a desktop tool such as ffprobe or ExifTool can list them, and they remain editable declarations too.
- Extract key frames. Use the video frame extractor to save stills at distinctive moments, such as a logo, a sign or a clear face, or a contact sheet for an overview. Frames are taken at the playback times you choose, not decoded codec keyframes.
- Search for earlier copies yourself. Upload a still to a reverse image search service you choose. isGenAI does not run that search, and the still leaves your device only when you upload it there. Compare earlier posts, uploaders, dates and the surrounding footage with the clip you have.
What platforms and re-exports strip
Most video you receive has been written again since it was first exported. Each of these steps creates a new file, and the new container can lose the Content Credentials manifest and rewrite creation dates and encoder records:
- Screen recordings, which capture pixels and none of the original file’s records.
- Messaging apps that compress video before sending it.
- Editing and trimming apps that re-export the clip.
- Social platforms that transcode uploads for streaming; some show their own AI label on the page instead, which is a page statement, not a record inside the file you download.
That is why a clip with no records is an open question, not a human certificate. The record you need usually lives in the earliest copy, so trace the clip back to its first publisher before drawing a conclusion.
What these checks can and cannot tell you
What they can show
A signed C2PA manifest that records AI generation or editing, container dates and durations as written in the file, and earlier copies that your reverse image search turns up. Each comes with its source.
What they cannot show
Whether unlabeled footage was generated by AI, whether a person in the clip is real, or when the scene was filmed. isGenAI does not classify video pixels, audio or voices.
For the full verification workflow, read how to tell if a video is AI. Have a still image instead? Use the AI image detector. For written content, open the AI text detector.
AI video checker questions
Can isGenAI tell whether a video was made with AI just by watching it?
No. isGenAI gives no visual AI verdict for video and runs no deepfake classifier. It reads evidence the file carries: C2PA Content Credentials in an uploaded MP4 or MOV, plus container headers you can read on your own device. When that evidence is missing, the honest answer is that the origin is still open.
Which video files can the C2PA checker read?
The Content Credentials checker accepts MP4 and MOV files up to 25 MiB, alongside images, PDF and selected audio files. If the file carries a C2PA manifest, it reports the signer, recorded actions, signature validity and signer trust separately. A file without a manifest is reported as having no record, never as proof of a camera or a human author.
Why does a downloaded video often have no Content Credentials?
Most copies you receive are not the original export. Screen recordings, messaging apps that compress video, editors that re-export and platforms that transcode uploads write a new file, and the new container can lose the manifest and rewrite dates. Ask the publisher for the original file, then check that copy.
Does isGenAI run the reverse image search for my video frames?
No. The video frame extractor saves PNG stills or a contact sheet on your device, with a timestamp record. You then upload a still to a reverse image search service of your choice, under that service’s own privacy terms, and compare earlier posts, uploaders and dates with the clip you have.