NCH Software offers a free version of Debut specifically for non-commercial, home use. You do not need a registration code for this version; it is fully functional for personal projects, though it may occasionally show a "nag screen" or lack certain professional features like specific watermarking tools.
The free "Home" edition is highly capable but has specific differences from the paid "Pro" edition: Usage: Limited strictly to non-business, personal projects. debut video capture software registration code free
If you absolutely need professional-grade features without a price tag, consider these open-source and truly free alternatives: NCH Software offers a free version of Debut
Suggesting totally free, open-source alternatives like OBS Studio open-source alternatives like OBS Studio