How to use the Video Merger
- Choose two or more videos. They are joined in the order shown.
- Pick the output size.
- Click Merge videos.
- Download the combined MP4.
Mixed clips work
Every clip is fitted to the same frame size (with black bars where shapes differ), set to 30 fps and given matching audio, so phone clips, camera files and screen recordings join smoothly. Clips without sound get silence so the audio stays in sync.
Speed
Merging re-encodes the video, so it takes time in a browser. Choosing 720p is much faster than keeping 1080p or 4K.
Good to know
Each clip is scaled to the first clip's size (or the size you pick), padded to keep its shape, set to 30 fps and given matching stereo 48 kHz audio, then joined and encoded once as H.264 MP4.
Supported files
MP4, MOV, MKV, WEBM, AVI, WMV, FLV, M4V, 3GP, 3G2, MPEG, MPG, TS, MTS, M2TS, VOB, OGV, MXF, ASF, DIVX, F4V, SWF, DV, MOD, TOD, WTV, RM and RMVB video, with H.264, HEVC, VP8, VP9, MPEG-4, MPEG-2, WMV, Theora and other codecs. AV1 videos cannot be read in the browser yet. Files up to 1 GB each.
Frequently asked questions
How many videos can I merge?
Up to 10 at a time.
Is the Video Merger free?
Yes, completely free, with no sign-up and no watermark. Files up to 1 GB each can be converted, and there is no daily limit.
Are my files safe?
Yes. Files are converted locally in your browser and are never uploaded. When you close the page, nothing is left behind.
Does it work on iPhone and Android?
Yes, in Safari, Chrome and other modern mobile browsers. Short files work best on phones; for long or high-resolution videos a computer is faster.