Merge Videos with Transitions
Join multiple videos in order with fade, dissolve, slide or wipe transitions and audio crossfades.
Local processing · No uploads · No sign-in
Processing and output
Clips are normalized to the selected resolution and 30 fps. Silent clips receive a silent audio track.
Does my video get uploaded?
No. Selected video, audio, subtitles and fonts are processed in this browser. They are not submitted to a video processing server.
What settings does Merge Videos with Transitions offer?
Clips are normalized to the selected resolution and 30 fps. Silent clips receive a silent audio track.
Why is a video shorter after merging with transitions?
Transitions overlap adjacent clips. For example, three 10-second clips with two 0.5-second transitions produce about 29 seconds rather than 30. Hard cuts do not add this overlap.
Can I merge clips with different dimensions or no audio?
Yes. The clips are fitted into a shared output size and normalized to 30 fps. Aspect ratios are preserved with padding, and silent clips receive silence so later audio remains aligned.
Can I process large files on a phone?
Modern browsers are supported. Combined inputs are limited to 300 MB on desktop and 100 MB on phones or low-memory devices, with lower default output resolution. Merge up to 8 clips. Short clips work best; transitions, compression and conversion can take time.
Related video tasks
Cut a video by start and end time with precise trimming or a fast stream-copy mode.
Reduce video file size by changing resolution and encoding quality in your browser.
Replace the original soundtrack with a local music file and adjust its volume.