Some scoreboards manufactured by Bodet have HDMI output. In this case it is better to take the feed directly from HDMI output instead of using camera (no risk of vibrations, no risk of changing brightness).
In order to ingest HDMI input in Scoreboard OCR, there are some simple ways:

1. Use HDMI capture dongle or card. For example, Magewell USB HDMI dongle
2. Use HDMI to HDMI to NDI converter

Please see below Scoreboard OCR sample settings for this kind of setup: