How to sync two action cameras and cut between the angles
Upload both recordings of the same run and say which moments matter. Vizard Agent aligns the two cameras to the frame using their audio, confirms the alignment visually, then cuts between the angles on overtakes and braking so the same second is seen twice from two positions.
What do you type into Vizard Agent?
Say what should drive the cutting rather than listing the cuts. Vizard Agent decides where to change camera from what you tell it about the action, so "change angle whenever it adds speed, especially into braking and overtakes" is far more useful than a numbered edit list. Name the moment you care about, not "the good bit".
Prompt
What does Vizard Agent actually do?
The whole thing collapses if the two recordings are even half a second out, so the alignment comes first. Vizard Agent calculates the offset from the audio, then looks at both streams side by side, because a cut between angles a few frames apart looks like a mistake rather than an edit. In the session behind this article it:
- Read the technical information on both race recordings, 1920x1080 H.264 at 60fps with AAC audio, and viewed thumbnails from each to see the angles and rough sync.
- Extracted the audio and detailed samples, calculated the exact time offset between the recordings, and checked the sync visually, side by side.
- Searched the catalogue for a high-energy track, measured the candidates' loudness and energy, and mapped the music's rhythmic peaks for the cuts to land on.
- Tested the vertical framing for each angle, with a separate pass on the cockpit view.
- Mapped the overtake precisely in both cameras and checked the cockpit view at the decisive instant.
When does this not work well?
When the two recordings don't describe the same moment. With no usable audio on one camera the alignment gets much harder, and runs that don't overlap can't be intercut. A much shakier camera is unwatchable when it's cut to every second. Vizard Agent tells you when the alignment is uncertain rather than cutting to an angle that shows something else.
Common questions
How does it sync the cameras? From the audio. Vizard Agent calculates the exact offset and then confirms it visually.
How often should the angle change? Every one or two seconds for an action edit. Vizard Agent holds longer where the action is slower.
Does high frame rate help? Considerably. Vizard Agent gets clean slow motion from 60fps footage that 30fps cannot give.