I made this video today, I could have put it in the other thread but I put it here because I wanted to run through how I did it. I must say I am not happy with the ocarina playing - too many squeaks! - but I am happy that I FINALLY managed to make a double tracked split screen video, and I think I am off and running.
Here is exactly what I did.
1. Did the guitar part first, video recorded on a Canon SX20 and audio recorded on the Mac with Audacity using the Samson GO mike. The camera was set up so I was in the right hand part of the video.
2. Did the ocarina part the same way except the camera was set up so I was in the left hand side of the picture. The Samson GO mike was used for both input and output for Audacity, allowing me to hear the guitar part while playing the ocarina. The Samson GO mike eliminates latency, so the guitar and ocarina were precisely in sync from the git-go, no dragging left or right! I then exported the audio containing the guitar and ocarina to a WAV file.
3. Copied the two video files from the SD card to a directory on the Macbook. The Canon produces Quicktime MOV files.
4 Brought the video MOV files and the audio WAV file into Kdenlive. This is a free Linux video editor available for the Mac via Macports. I like it a lot. Dropped the ocarina video on video track 1 and the guitar video track on track 2.
5. Synced up the two video files and the audio file - this is not too hard, by zooming in you can match up wave patterns in the sound files.
6. Muted the audio on the two video files - just wanted the audio from Audacity, not the Canon!
7. Made a title clip with Kdenlive and put it at the start of the video. Applied a fade to black to the title and a fade from black to the first video clip.
8. Used a composite transition between the two video clips with a wipe frozen at 50% so the ocarina part would occupy the left half of the screen and the guitar part would occupy the right half.
9. Rendered to an MP4 file.
I had intellectually known how to do this, but this is the first time I have actually taken it to any kind of a finished product! Now if I could just master the ocarina playing part!