Video Merger

Merge videos into one

Join several clips into a single video — scenes from a trip, parts of a recording, or a series of tutorial steps — and download one MP4 that plays straight through. The clips don’t have to match: different sizes, shapes, frame rates and formats all fit together.

How to merge videos

1. Add two or more clips (MP4, MOV, WebM or MKV): pick several at once, drop them in, or paste a direct link. You can add more at any time.
2. Put them in order with the arrows, and remove any you don’t want.
3. Choose the frame size: the same as the first clip, 1920×1080 or 1280×720 landscape, 1080×1920 vertical, or 1080×1080 square.
4. Merge them, preview the result and download the MP4.

Good to know

• A clip of another shape is fitted inside the frame without cropping, with black bars or a blurred copy of itself filling the gaps — your choice.
• Clips without sound get silence, so the sound of the clips after them stays in sync.
• Every clip is re-encoded into one MP4 (H.264 video, AAC sound) at most 1920 pixels wide or tall. That takes a while for long or HD clips; the progress bar shows how far it has got.
• Trim each clip beforehand with the Video Cutter, repeat one clip with Loop Video, or put music over the result with Add Audio to Video.

Everything is processed in your browser with ffmpeg (WebAssembly): none of your videos is uploaded, and there are no watermarks.