Unity-FFmpeg-ScreenRecorder

https://github.com/shinn716/Unity-FFmpeg-ScreenRecorder.git?path=Assets/Packages/FFScreenAudioRecorder

Need to set Audio input in first time.

FFAudioRecorder
Capture microphone and system sound.
FFFrameRecorder
Capture camera frames without audio.
FFMergeAV
Merge Audio(mp3) and Video(mp4).
FFScreenRecorder
FFmpeg Capture screen and audio (speaker and microphone)
Right click on FFScreenRecorder component and click StartRecording, it will capture screen and audio both.
Then click StopRecording, it will stop recording and export video to streamingassets/out.