Duration of the clip in seconds (required for audio since we can't infer it)
OptionaleaseIn?: numberEase-in duration in seconds (default: 0)
OptionaleaseOut?: numberEase-out duration in seconds (default: 0)
Optionalloop?: booleanWhether the audio should loop within the clip (default: false)
Optionalspeed?: numberPlayback speed multiplier (default: 1)
Optionalstart?: numberStart time of the clip in seconds. If omitted, placed after the previous clip on this track.
Optionalvolume?: numberVolume multiplier for this clip (default: 1)
Options for an audio clip in the timeline builder