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MULTICAM CREATOR STUDIO
Multicam Video Synchronizer
Align camera recordings with audio fingerprints or camera timestamps. Preview angles together, choose live cuts, and render your multicam edit—without uploading footage.
Audio matching is correlation-based; results are suggestions, not guaranteed frame-perfect sync. Confirm alignment visually or with a clap.
Program monitor
Import camera clips to begin
No angle
PREVIEW
00:00.0 / 00:00.0
Start with two camera files recorded during the same event. Use one as the reference.
Camera angles
Offsets are positions on the shared timeline. Positive means the camera started later than the reference.
0 / 4
Your camera cards appear here. Each clip stays on your device.
Angle-cut timeline
Click a camera’s Cut here button at the playhead to switch angles. Drag the playhead to review cuts.
Camera cuts appear here after import.
An edit begins with the reference camera. Add cuts to change the program angle.
Selected cut
Render & export
WebM video
Export any range up to 120 seconds (including sections of longer recordings). The reference camera supplies continuous audio even when the picture switches to another angle. It must span the full output. A browser that cannot route its sound will reject the audio export rather than claim success.
Project recovery
No uploads
Saved projects contain cuts, offsets and settings—not video data. Import the matching camera files before reopening the JSON. Keep the original files.
How to make a multicam edit
01 · Import angles
Load up to four videos from the same recording. Choose a reference camera with complete coverage.
02 · Align recordings
Use matching audio, explicit timestamps, a shared clap/event marker, or manually adjust offsets. Inspect the angle previews to confirm lip-sync.
03 · Switch & export
Play or scrub, cut to cameras using number keys or buttons, and export a WebM with optional continuous reference audio.
Compatibility & limitations
Playback and import depend on your browser’s video codec support. Audio waveform matching is optional and memory-intensive; very large or unsupported audio cannot be decoded. Recorded video export is near real-time, not lossless or guaranteed frame-accurate. MP4 output, automatic face/lip synchronization, timecode metadata extraction, and switchable live audio mixing are not included.
Rendering multicam video
Preparing video…
Using Multicam Video Synchronizer
Align up to four camera clips on one timeline, review suggested synchronization and build a manually edited angle-cut sequence. Export a selected WebM range or handoff data for another editor.
Import up to four browser-playable camera videos and choose the reference camera.
Align with recording times, matching event markers or audio-correlation suggestions, then review sync visually around a clap or shared event.
Cut between angles, adjust crop focus and reference-audio gain, then export a selected interval or save the decision list/project settings.
Example: For a two-camera interview, mark the same clap at each camera’s source-relative time, align the markers, review the clap in both previews, then cut and export a 20-second segment.
Limits and privacy: Audio correlation is a suggestion, not guaranteed synchronization; its decode window is limited to 180 seconds per file and needs distinctive shared sound. Only reference-camera audio plays continuously; cuts do not switch camera audio. Exports are limited to 120 seconds and recorded in real time as browser-dependent WebM, not frame-exact MP4. JSON omits media, so keep and reimport matching original clips. Real camera timing and audio-correlation synchronization remain unverified.
Frequently asked questions
Does audio matching guarantee frame-accurate sync?
No. Correlation proposes an offset from decoded audio and may be unreliable with quiet, clipped or similar sound. Verify alignment with a clap or another shared event.
Does the soundtrack switch with each camera angle?
No. The reference camera supplies the continuous audio track; video angle cuts do not switch or mix per-camera sound.
