[lpa53]

For my Youtube recordings to date I've been using my Zoom recorder for both audio and video. However, I've been thinking of recording the audio through my old M-Audio Fast Track into Audacity to give me control over separated guitar and vocal audio tracks.

Two questions: Is this how most higher-quality videos are produced, and if so, how are the video and audio synced after the fact? I'm concerned about the latter because I don't see how one could start the two recording devices simultaneously.