✂ clearcut

Cut pauses, “uh/aaa”, stretched sounds and breaths, check every cut, then encode at the smallest size that still looks right. Nothing is uploaded: it all runs in this tab.

Drop a video here or click to choose
Any format: MP4/MOV are cut with your graphics chip (WebCodecs); MKV, AVI, WebM, TS and others go through ffmpeg.wasm.

Click a coloured block to keep/remove it · drag on the waveform to add your own cut · scroll to zoom, shift+scroll or drag the top strip to move · Space play · ←→ previous/next cut · X toggle the cut under the playhead

Cuts

What to remove

Pauses (silence) Speech detection threshold Strict (also drops breaths/noise jumpcutter-style) Padding around speech, ms Keep pauses shorter than, ms Leave this much of each pause, ms

Silero VAD, the same model and defaults as clearcut (75 ms padding, 180 ms shortest pause cut).

“uh”, “aaa” and stretched sounds Remove “uh/aaa” between pauses Shorten “uh/aaa” between words Shorten stretched sounds (“sooo”, “welll”) How much to leave Steadiness (MFCC flux below) Pitch steadiness, semitones Shortest sound, ms

clearcut’s detector: a held “aaa” has a flat spectrum and a flat pitch. Higher steadiness or pitch values find more (and risk real words).

Breaths Length, ms –

Unvoiced noisy bursts next to a pause.

Encode

Size (shrinkvid) Codec

Quality target Allow a lower resolution if it is smaller at the same quality

Encodes three short samples at several settings, checks each against the original, and picks the smallest that meets the target.

Audio Mono (speech) Bitrate, kbit/s Even out loudness (−16 LUFS, peaks −2 dB)

clearcut in the browser · Silero VAD (MIT) · ONNX Runtime Web · mp4box.js · mp4-muxer · ffmpeg.wasm · source