Whole track or selection
Export all available audio or only the time range needed for a clip, quote or ringtone.
Load a video, confirm it contains an audio track, choose the whole timeline or a precise range and save the sound as a separate file.
Input containers, output codecs, size limits, URL support and local-processing claims must be populated from the implementation.
Read the full guideChoose a video
or
MP4, MOV, MKV, WebM, AVI, FLV…
Maximum file size: 2 GB
URL mode downloads media from its host, so network access and the host’s CORS, authorization and range-request rules apply.
It reads a video’s audio track and writes that sound into a separate audio file. It does not improve the source recording, remove noise or modify the original video; any format change can require decoding and re-encoding.
Export all available audio or only the time range needed for a clip, quote or ringtone.
Use the decoded audio timeline to check the start and end before processing.
Choose only the formats, bitrates, sample rates and channel modes available in the current engine.
The source video remains untouched; the result contains audio only.
Choose a local file or, when supported, a direct public URL. Confirm duration and that an audio track is listed.
Use the whole track or set start and end points on the waveform. Preview the boundaries.
Pick a supported format and leave sample rate or channels at Source/Auto unless the destination requires a change.
Start processing and keep the tab open while the browser decodes and encodes the selected range.
Listen to the beginning and end, check duration and confirm there is no unexpected silence or channel loss.
MP3, AAC, Opus or Vorbis can make smaller files, but every additional lossy encode may discard information.
WAV or FLAC can avoid another lossy compression step when supported, but they cannot restore details already lost in the video’s audio track.
Higher bitrate usually preserves more detail in a lossy output and increases size. Choose based on speech, music and the delivery target.
Keeping the source rate avoids unnecessary resampling. Change it only for a known downstream requirement.
Mono can reduce size for single-speaker material; stereo should be kept when spatial or music information matters.
Verify the decode and encode pipeline before saying a local file never leaves the browser. URL mode necessarily retrieves the video from its host and may expose the request to that host; signed links, authentication, CORS and range support can affect access.
The source may be silent, use an unsupported codec or store audio in a track layout the parser cannot expose.
The URL may be a webpage, require cookies, expire, block CORS or reject byte-range requests.
Lossless output and high bitrate produce larger files; audio duration and channel count also matter.
Recheck the selected timestamps. Irregular source timestamps and codec priming can also shift boundaries slightly.
No. The tool should create a separate audio file and leave the original video unchanged.
No universal guarantee is possible. The browser must decode the source audio and the implementation must provide an MP3 encoder.
Keeping the source track without recompression would preserve it best, but many browser workflows decode and re-encode. Lossy output can reduce quality.
Yes when range selection is implemented. Set start and end times, preview the boundary and export that interval.
The audio track may not be decoded yet, may be unsupported or may not exist.
Only state they are not uploaded after checking the actual pipeline, telemetry and error reporting. URL sources are still fetched from their host.
Use WAV or FLAC for further editing when supported; use MP3, AAC or Opus for smaller delivery files based on compatibility needs.
No. Extracting a mixed audio track is different from source separation.