Why this tool is useful
Extract an editing-quality lossless audio copy from an owned video while keeping the source media and decoded samples entirely on the device.
Local File Tools · runs locally
Private Video to Lossless FLAC Audio Extractor
Decode the audio track of a short browser-playable video and preserve it as a real 16-bit lossless FLAC file without uploading the clip.
Ready. Your working data stays in this browser.
Files and capture streams stay on this device. Processing uses browser APIs only; nothing is uploaded to YTSave, the media API or a proxy. No server copy is created, stored or left to delete. The file picker is cleared when processing starts, and disposable worker memory is destroyed after completion or cancellation. Preview and generated-output memory is released when you clear the tool or leave the page.
How it works
The browser decodes only the selected video's audio track. The tool bounds its duration, applies the chosen sample rate and channel layout, then packages the PCM samples as checksummed FLAC frames without retaining the video.
Practical example
Select a short WebM or MP4 with sound, convert its decoded track to mono FLAC and verify the sample rate, channel count and output size before download.
Validation
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Privacy boundary
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Result passport
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.