OBS Studio is an open-source broadcast quality software that you can use to create a mobile recording and streaming studio.
OBS Studio is supported on Windows, MacOS and Linux laptop. Once installed, you have a full-fledged multi-scene, multi-source, audio-visual recording studio with capability of streaming on your favorite platform such as YouTube and Twitch.
Now, you can use the microphone and webcam for sources. This would be a basic setup for recording and streaming personal messages.
Things start to get interesting once you connect external sources. It can be setup for recording/streaming live events, music recording…