This Blackmagic Design H.264 video encoder recorder is a great choice for video encoding. Note that it doesn't come with a power supply.

To use this Blackmagic Design H.264 video encoder recorder, first connect it to your device. You'll need to use your own power supply as it's not included. When you're done, turn it off properly. For maintenance, keep it in a dry and clean place. Don't expose it to extreme temperatures or moisture. Also, handle it gently to avoid any physical damage.