Contribute sign videos

Help build Mathla's sign language dictionary and training data by recording signs with your device camera. Every submission is reviewed before use.

How it works

  1. Sign in and accept the contributor consent
  2. Choose a sign from the dictionary list
  3. Record live with your camera — gallery uploads are not accepted
  4. Record up to 5 clips, then upload them all at once for Mathla review

Live recording only

For quality and authenticity, you must record each sign in real time using your browser camera. Pre-recorded files cannot be uploaded.

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