MP4 to MP3 converter
Convert MP4 video to MP3 audio online. Extract the soundtrack from MP4, MOV, or WebM and choose the bitrate — converted privately in your browser.
Merge videos
Join video clips in your chosen order, entirely on your device.
Works on your device. Your files are never uploaded.
Preparing this page for offline use…
How to use Merge videos
Select clips and reorder them before exporting. Clips are fitted to the first clip’s dimensions, with black borders where needed. Audio is kept by default and resampled to stereo 48 kHz. Choose silent output if your browser cannot encode audio. Requires WebCodecs; formats depend on your browser.
Files and calculations stay on your device. After this page and its assets have loaded, it works without an internet connection.
Merge videos FAQs
Is Merge videos free?
Merge videos is a free online tool on ReallyUseful.Tools. No account is required.
Does Merge videos run in my browser?
Merge videos is designed to run in your browser where supported, so files can stay on your device instead of being uploaded to a server.
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