Concatenate clips of the same codec.
Drop 2 or more videos
Multiple files supported
Add an MP4, MOV, MKV or WebM file.
Configure quality, times or format for the run.
Save the processed video back to your device.
Files up to a few gigabytes work on modern laptops. FFmpeg runs in a Web Worker so the UI stays responsive.
No. ffmpeg.wasm processes bytes in your browser — nothing is uploaded.
MP4, MOV, MKV, WebM and more. Both input decoding and output encoding run locally.
Re-encode with H.264 at a target quality.
Cut a clip from start to end — no re-encode.
Convert a clip into an animated GIF.
Pull the audio track out as MP3 or AAC.
MOV, MKV, WebM ⇄ MP4 with fast remux.
Rotate 90°, 180° or 270° and re-encode.
Grab a still frame at any timestamp.
Strip the audio track and keep the video.
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