It's not automatic, but there is this marker tool that uses an audio track to make note of important timestamps while you are recording: https://github.com/evan

It's not automatic, but there is this marker tool that uses an audio track to make note of important timestamps while you are recording: https://github.com/evankale/Blipper https://github.com/evankale/Blipper The author also wrote supporting scripts for Vegas to extract scenes based on the position of the blips in the audio.