Shooting with audio files

Motion Capture – Audio Recording
Audio can play a big part in motion capture which contains dialogue or must be of a particular length.

It can be used as a timing reference for the actors during the shoot. It is also an aid for synchronization, when the mocap data is ready to be cut into the show.

Audio files should be generated (sometimes by an AVID editor), and saved out.

There are a few requirements.

When generating audio files:

Each audio clip should begin with three 500hrtz beeps, each one second apart, and end in one 500hrtz beep.

The motion capture system is built to recognize a 500hrtz tone and as a start and stop signal for capture.

The third beep at the beginning is the start of the shot and dialogue should begin one second after the third beep.

The last beep at the end of the shot is the end of the shot.

The beeps should be recorded on the right channel, and the dialogue/sound on the left channel. The volume on both channels should be roughly equivalent (that is, make sure the beeps are as loud as the rest of the audio).

What kind of sound to put in the audio files?

Audio files are required only for those shots that require a timing reference, during motion capture.

Try and make the audio reference as complete as possible, but be prepared to re-record it afterwards if you choose to record audio during the capture.

Moves that don't contain talking, or whose length is not important, don't need audio.