The Align To Reference Track tool allows multiple clips to be aligned to the audio in a reference track. This can be useful to align clips that were recorded at the same time from multiple camera angles.
- This tool can only be used to align clips with audio that is similar to the audio in clips on another track. Both the clip to align and the reference track must have audio that is similar so that the algorithm can detect the alignment.
- The tool does not use timecodes for alignment
Place clips with similar audio on separate tracks. For example, put all the clips from each camera source on its own track.
Choose one track to be the “Reference Track”. Typically, this will be the audio from the best audio source. For example, use the camera that had the microphone closest to the presenter.
Select the clips to be aligned (do not select any clips on the reference track)
Right-click on the selected clips and choose from the menu: More->Align To Reference Track
In the dialog, select the reference track. Then click “Process”
If the results look good, click “Apply”.
The selected clips will be moved on the timeline to be aligned to the reference.
If the selected clips can not be aligned, or if the alignment drifts over time, re-run the tool and select “Calculate speed adjustment”. With this option enabled, the alignment algorithm will try to detect alignment by speeding or slowing the clips. The clip speed difference can be detected by up to +/-0.5%.
If the tool is able to detect alignment with the “Calculate speed adjustment” option, after clicking “Apply”, the clips will be moved and their speed will be changed to make the alignment.