Convert · Trim · Extract from video
Convert audio to practical formats, cut the exact section you need, or extract the soundtrack from a video—with playback synchronized to an interactive waveform.
Audio and video stay on this deviceCommon MP3, WAV, M4A, AAC, FLAC, Ogg, MP4, MOV, WebM and MKV files up to 2 GB.
Selected media
Audio player and waveform
Trim selection
Processing audio locally
Conversion, trimming, extraction and waveform analysis all run locally in this browser.
Audio is ready
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The tool reads the primary audio track from audio or video, trims a chosen time range, exports MP3, WAV, M4A or WebM, and draws a waveform from locally decoded samples without sending media bytes to Zituo.
Play or click the waveform to locate a point, set the start and end, then preview the selection. Choose format, bitrate, sample rate and channels before processing. Video frames are discarded automatically.
Mediabunny parses the audio or video container and selects its primary audio track. WebCodecs or the official MP3 extension decodes and encodes it; media timestamps define the trim, floating-point samples provide waveform peaks, and the result is muxed into an MP3, WAV, M4A or WebM Blob for browser download.
The tool reads the primary audio track from audio or video, trims a chosen time range, exports MP3, WAV, M4A or WebM, and draws a waveform from locally decoded samples without sending media bytes to Zituo.
Play or click the waveform to locate a point, set the start and end, then preview the selection. Choose format, bitrate, sample rate and channels before processing. Video frames are discarded automatically.
The browser reads, decodes, trims and encodes the file on this device with Blob, WebCodecs, Web Audio and Mediabunny. Media content is not uploaded to Zituo. The page may still load the traffic measurement script disclosed on the privacy page.