You might use a neutral density filter as a quick fix. Depending upon what ISO you were filming at, you may need to lower it, change your aperture, or exposure, or all of the above. Any of those settings can impact the amount of light coming into your camera. What camera were you using, and what settings?
I don't recall the model number. They were Panasonics borrowed from a local TV station. The camera uses the P2 format. We had three cameras. A static wide shot FOB (nice but dark), a roaming videographer on stage (amazing results), and stage right center (handheld for close ups) (mostly poor when the lights were up). I got the board feed on digi-recorder, but never patched it to the static cam (rookie mistake) because the on board cam mics were totally over loaded making the sync process a struggle. Also mic'd the room with Church Audio cards FOB. Post production has been a nightmare that I haven't had time to go back to. It's been over three years now! I should point out the stage right cam was set for better results for the 2nd set, but still has washout/over exposure under bright light. They were older cams tha the TV station (NBC affiliate) still used for certain shoots. It was our 1st "big" job and like the song goes..."regrets, I have a few..."
I now have three Canon XA25s. Awesome low light res and many options for video & audio.