How to use
- Choose or drop two or more videos (or only audio files to join them into one MP3).
- Put them in the right order with the arrows.
- Choose the output size and whether to add black bars or crop to fill the frame.
- Press Merge and download the result.
Frequently asked questions
Can I merge videos with different sizes?
Yes. Every clip is scaled to the output size; with “black bars” nothing is cut off, with “crop” the frame is filled.
What if one clip has no sound?
Silence is added for it automatically, so the audio stays in sync across the whole video.
How long does it take?
All clips are re-encoded in your browser, which takes roughly as long as the total video length on a fast computer. Choosing 720p is much faster than 1080p.