Merge several videos
Upload your clips, order them and download a single MP4. Resolution, fps and audio are normalized (silent clips get a silent track).
Your files never leave your device
How to merge videos
- 1
Upload the clips
Up to 5 per merge, mixed formats welcome.
- 2
Order them
Arrows to move each clip up or down.
- 3
Download the MP4
One video with all of them, in order.
Why use this tool
Automatic normalization
Different resolutions and frame rates are matched, with black bars if needed — nothing gets distorted.
Audio handled
Silent clips get a silent track so the join never breaks.
Clear about it
Merging requires re-encoding and we say so — no fake instant merges.
Private
Your videos never leave your device: ffmpeg runs in your browser.
Frequently asked questions
Can I mix formats and sizes?
Yes: each clip is scaled onto a common canvas (with bars if its aspect differs) and matched to 30 fps and 48 kHz stereo audio.
Why re-encode?
Joining without re-encoding only works when every clip shares the exact codec, resolution and parameters — which is rare. Re-encoding guarantees the result always plays.
How many videos can I merge?
Up to 5 per run to keep browser memory sane. Need more? Merge in batches.
What resolution will the result have?
The largest clip's, capped at 1920×1080 to keep processing reasonable.