A forty-minute talk filmed on one camera from start to finish is hard to sit through. Add a second phone for a close-up or a side angle and the edit can cut between the two, which changes the pace at once. That is multi-camera. It doesn't need expensive kit; two phones will do. But a few things have to be right on the day, or the edit becomes painful.
How multicam editing works
The editing software lines up clips filmed at the same time on one timeline, and the editor chooses which angle to show second by second. The lining up is usually done by sound: every device records the same room, and the software matches the waveforms. So the first rule is that every device must record audio, even if that audio is never used.
On the day
- Start every device before anything begins. All of them should be rolling before the first word.
- Clap once at the start. A sharp clap leaves a spike in the waveform for lining up by hand if the automatic match fails.
- Avoid stopping. Each stop is another clip to sync. Clear storage beforehand and plug in.
- Match the frame rate. One at 30 and one at 60, or 25 and 30, will drift apart. See what fps means.
- Keep white balance and exposure close. One angle yellow and one blue is obvious at every cut. On a phone, at least lock exposure.
- Record one good audio source. A lapel microphone, or a phone placed near the speaker, becomes the main sound in the edit.
Where to put the cameras
- Main camera: front, wide or half-length, on a tripod, never moved. It's the safety net when another angle fails.
- Second camera: side or close-up. The framing should differ clearly, for example full body and chest-up, so cuts feel natural.
- Third, if you have one: the audience, the slides, or hands at work.
Keep both cameras on the same side of the speaker. One on the left and one on the right makes the person flip direction at each cut.
Common mistakes
- A phone stops recording because storage filled up, it overheated or a call came in, and nobody notices.
- One device recorded no sound, so the picture has to be matched frame by frame.
- The second camera keeps moving and zooming, leaving little that is usable.
- Device clocks differ, so file times don't match. Setting the date and time the same on each makes sorting far easier.
Handing the footage to us
- One folder per device: "A front", "B side", "audio".
- Don't rename or trim files. Keep the originals in their original order.
- Add a note: which is the main angle, which audio is best, and any stretch a device missed.
- For uploading, see how to send large video files.
Multicam footage is several times the volume of a single camera, and sorting and syncing take time, which shows in the schedule we assess.
FAQ
Can a phone and a camera be mixed?
Yes. Colour and quality will differ; the edit brings them closer, though not identical. Matching frame rate matters most.
No clap and no shared sound. Can it still be synced?
By hand, using movement in the picture such as lips or gestures. It takes longer, and long recordings may drift slightly.
Could one 4K camera, cropped in the edit, replace a second camera?
As a fallback, yes. A 4K source exported at 1080p can be cropped into a closer shot to cut to. The angle doesn't change, but it's better than no cut at all.
