Vis Exo
EDIT — MERGE VIDEOS
Merge Videos Online, Free — Join Clips in Your Browser
Two takes, a phone clip and a screen recording, a vlog in five parts: drop them all in, put them in order, and they come back as one continuous video. Different formats and sizes are fine, and the sound stays in sync from the first clip to the last.
One Video Out, However Mixed the Clips
Mix formats freely
An iPhone MOV, a WebM screen recording and an MP4 from a camera can go in the same merge. Every clip is decoded and re-encoded into one consistent file, so nothing is left in a format a player chokes on.
Different sizes, handled
The output takes the first clip's shape. Clips of another shape are fitted with black bars, or cropped to fill the frame if you prefer; portrait phone clips are turned the right way up automatically.
Sound that stays in sync
Each clip's audio is cut to exactly the length of its picture before the next one starts, so the soundtrack cannot drift, even across many clips. A silent clip simply stays silent.
Nothing leaves your device
The merge runs in this tab on your own processor. There is no upload, no size limit and no watermark, and your footage is never on anyone else's server.
Three Steps, In Your Browser
- 1
Drop in your clips
Pick two or more at once, or add them one at a time with Add Clips. Each one shows a thumbnail, its length and its size.
- 2
Put them in order
Use the arrows to move a clip up or down, or the cross to take one out. The video plays top to bottom.
- 3
Merge and save
Press Merge, watch the progress, play the joined video back in the page, and save it. Choose 720p or Smaller file first if it needs to fit an upload limit.
Merge videos on iPhone, Mac, Windows and Android
The same page works everywhere, with nothing to install. What differs is where the file comes from and where it goes.
iPhone & iPad
Open this page in Safari and pick the clips from Photos. The joined MP4 saves back to Photos or Files.
Mac
Join QuickTime recordings, iPhone clips and screen captures into one MP4 that opens in iMovie and Final Cut.
Windows
Chrome or Edge join and encode using your graphics chip; the MP4 plays in Photos and every editor.
Android
Merge clips from your gallery in Chrome, then share the single video to WhatsApp, TikTok or Instagram.
Which Output for a Merge?
Three options, honestly compared — including when the right answer is to convert nothing at all.
| Target | Pick it when | Watch out for |
|---|---|---|
| MP4 — H.264 + AAC | Posting, sending or editing the joined video anywhere: phones, TikTok, Instagram, YouTube, every editor. | The safe default. Choose 720p as well if the file has to be small. |
| WebM — VP9 + Opus | The joined clip is going onto a web page. | Not what iPhones, QuickTime or most editors expect. |
| MP3 or WAV — audio only | You only want the joined soundtrack, such as voice notes or a set split across files. | The pictures are thrown away; this makes one audio file. |
Merge videos FAQ
How do I merge two videos into one for free?
Drop both clips on this page, check the order, and press Merge. You get one MP4 with the second clip starting exactly where the first ends. There is no account, no watermark and no cost.
Can I merge videos with different formats or sizes?
Yes. MP4, MOV, MKV and WebM can be mixed, and clips of different sizes are fitted to the first clip's frame with black bars, or cropped to fill it if you choose Fill.
Are my videos uploaded?
No. The clips are read and joined by your own browser on your own device, which is also why there is no file-size limit.
How many clips can I join?
As many as you like. The practical limit is your device's memory, since the joined file is built in memory before you save it. A laptop handles several minutes of HD footage comfortably.
Can I merge videos on an iPhone or Android phone?
Yes, in Safari or Chrome. Pick the clips from Photos or your gallery; shorter clips join fastest on a phone.
Related Converters
Compress a Video
Keep the format, drop the resolution and the bitrate — the same engine that converts also makes files smaller.
MOV to MP4
QuickTime files that already hold H.264 and AAC are re-wrapped rather than re-encoded — near-instant, with nothing lost.
WebM to MP4
Screen recordings and browser captures arrive as WebM, which iPhones and QuickTime will not open. This turns them into H.264 MP4s.
Remove audio
Strip the soundtrack out of any clip so it plays silent, ready for new music or a voice-over.
Convert it, then track something in it
Vis Exo adds blob tracking, pose skeletons, trails, LUT grades and captions to the finished MP4 — free, and entirely in your browser.