Video assembly studio

Join matching silent WebM clips without uploading them.

On your device · No account

Privacy details

Video assembly studio processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

Copy link includes the inputs you choose to share in the address. Anyone with that link can reopen them. Files and generated results are excluded. Password and key tools share settings only.

Choose silent WebM clips

Join 2 to 12 matching silent VP8/VP9 WebM clips. Clips with sound are rejected. MP4 is not supported.

Assembled video

Preparing example…

Reset reloads the tool with its starting values and releases open files and device controls. Saved drafts stay on this device until you delete them.

Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.

Keyboard shortcuts

Updated 2026-09-20

Arrange the clips, then join them

Choose matching silent clips, use Up and Down to set their order, then choose Join clips. The timeline moves each clip after the preceding one while retaining the encoded frame bytes. Clips with audio are rejected; sound is never discarded automatically.

Next: Video resizer

A worked example

Two example clips of 1.008 seconds form a 2.016-second WebM containing all 20 video frames.

Before you use the result

Silent VP8/VP9 WebM only, 2 to 12 clips totaling less than 100 MB and five minutes. Codec, pixel dimensions, color settings, frame timing and timestamp scale must match. No MP4, soundtrack mixing, transitions, cropping, trimming or encrypted/streaming files. Use Mute video first only when you want to discard the original sound.

Next: Mute video

Cite this page

Citation style

ToolOctopus. “Video assembly studio.” Updated 2026-09-20. https://tooloctopus.com/video-assembly-studio.

Add an access date if your instructions require one.

Citation formatting uses citeproc-js by Frank Bennett and Citation Style Language styles. Licence and source code.