Edit · 07
Merge Videos
Drop your clips, drag the filmstrip cards into order, get one clean MP4. Mixed resolutions and formats are normalized automatically.
Drop two or more videos here
MP4, WebM, MOV, MKV, AVI — any mix
drop works anywhere on this page
Join videos into one file — in your browser
Each clip you drop becomes a filmstrip card with a real thumbnail and its duration. Drag the cards into the order you want (the numbered badges update live), check the total running time, and merge. The output is a single H.264 MP4 that plays everywhere.
Mixed footage, handled
Merging fails on most tools the moment resolutions differ. Here every clip is automatically scaled to fit the first clip's frame — padding added where shapes differ — and normalized to a common frame rate and audio format before concatenation. Phone portrait + GoPro + screen recording in one timeline? It just works, in order, in sync.
What to know before merging
- The first clip sets the canvas. Its resolution becomes the output resolution — put your highest-quality, correctly-shaped clip first.
- Clips with no audio get silence inserted so later clips don't drift out of sync.
- Trim first, merge second. Tidy each clip with the trimmer for a tighter final cut.
Because the merge runs on-device via WebAssembly, there's no multi-file upload marathon — five 200 MB clips would mean a gigabyte of uploading elsewhere; here work starts the instant you click.
FAQ
Can I merge videos with different resolutions or formats?
Yes — every clip is auto-scaled/padded to the first clip's resolution and normalized to a common frame rate.
How many videos can I merge?
No fixed limit; it depends on device memory and total length. A dozen normal clips is routine.
What happens to the audio?
Audio concatenates in order; silent clips get silence inserted to keep sync.
Are my clips uploaded to merge them?
No — the merge runs in your browser. No upload wait, no total-size cap.