Video and audio tools

Set in/out points on a preview player and export the range as a locally re-encoded WebM clip.

Re-encode a video with the audio track entirely absent from the output file.

Resolution and bitrate presets re-encoded locally in real time, with before/after size reporting.

Decode a video's audio locally and export it as lossless WAV or compact WebM/Opus.

Waveform-guided range selection with sample-accurate cutting and WAV/Opus export.

Rotate, flip, crop, resize, retime, mix audio, and burn text or an image into one verified video export.

Record a screen, window, or browser tab with optional shared audio through the browser permission prompt.

Record camera and microphone input locally and download a playback-verified clip.

Place several browser-decodable clips in order and rebuild them into one consistent video canvas.

Center-crop unwanted edges from a video and encode the visible area into a new file.

Speed up or slow down video playback from 0.25× to 4× before local re-encoding.

Burn an image or watermark into the lower corner of every video frame.

Burn readable outlined text into the video so it remains visible in any player.

Destructively obscure a selected logo rectangle with a baked-in blur.

Mix an additional audio file with a video's existing sound during a new export.

Raise, lower, or silence a video's audio gain while rebuilding the output.

Rotate video frames by 90, 180, or 270 degrees with corrected output dimensions.

Mirror video horizontally or vertically and bake the transform into a new file.

Scale video down to a chosen maximum width while preserving its aspect ratio.

Repeat a clip up to twenty times in one continuous encoded video.

Estimate frame-to-frame camera translation and smooth small handheld shakes with an overscan crop.

Speak text with installed system voices and capture this tab's audio into a downloadable file.

Decode a playable video and rebuild it as a genuine MP4 or WebM container supported by the browser.

Apply gain plus optional fade-in and fade-out to decoded audio samples.

Resample audio from 0.25× to 4× and export the transformed samples as WAV.

Shift decoded audio up or down by semitones with an explicitly disclosed duration change.

Adjust bass, midrange, and treble with an offline three-band Web Audio filter chain.

Reverse every decoded sample and write the result into a lossless WAV file.

Record microphone input with browser echo cancellation and noise suppression where available.

Decode multiple audio files, resample them to one rate, and place them end to end in a WAV.

Decode browser-supported audio formats and rebuild them as universally readable PCM WAV.