offlinewebtools.com browser-local workbench
Join Videos
Concatenate multiple video files into a single continuous video with synchronized audio and transitions.
Files are processed locally in your browser using WebAssembly. This input is required.
Saved FFmpeg presets (stored locally)
Preview and export
Inspect the source before running FFmpeg, then preview the generated output before downloading.
Expected output
The generated file preview, size, type, and download action appear here after processing.
Note: This tool requires uploading multiple video files. Current implementation is limited to single file input. Use desktop video editing software for joining multiple videos.
What this tool does
Join Videos helps you concatenate multiple video files into a single continuous video with synchronized audio and transitions.
What you get
Join Videos produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.
Report a bug
If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.