Step 1: Attach your WebM files using the button above or by bring and position.
Step 2: Click the 'Optimize' button to start the optimization.
Step 3: Collect your converted FLAC files.
WebM to FLAC Optimization FAQ
How do I extract the audio from a WebM file as FLAC?
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Upload the WebM file and we demux the audio track, then transcode it to FLAC. There is no second video pass and no quality loss beyond what the FLAC codec itself introduces.
What audio bitrate does the FLAC file use?
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A lossy FLAC is encoded at 192 kbps by default. The Audio Quality setting also offers 320 kbps for the best quality and 128 kbps for a smaller file. A lossless FLAC (WAV, FLAC) ignores the bitrate and keeps every sample.
Will I lose audio quality going from WebM to FLAC?
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If FLAC is lossless (WAV, FLAC), every sample is preserved exactly. If FLAC is lossy (MP3, AAC, OGG, Opus), the FLAC codec recompresses — at 192 kbps this is transparent for almost all content. Recovering quality that was already gone in the WebM source is impossible.
Does the extracted FLAC keep the original sample rate?
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By default yes — a 48 kHz audio track in WebM becomes 48 kHz in FLAC. If you need 44.1 kHz (CD-quality) for compatibility with older players, the advanced options expose a sample-rate dropdown that resamples with a high-quality filter.
Can I extract audio from multiple WebM files to FLAC in one batch?
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Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
How long does extracting FLAC from a WebM file take?
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It depends on the size and length of the file. Small documents and images are usually ready quickly. Long videos take the longest, because most video conversions re-encode every frame.
Can I extract just a section of the WebM audio as FLAC?
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Not in this single tool — extract the full audio as FLAC here, then use /audio-trim/ or /audio-cutter/ to clip the section. The two-step path is faster than a combined operation because we avoid re-decoding the whole file twice.
Is my WebM file private during audio extraction?
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Yes. Uploaded WebM files are processed on our own conversion servers, no person reviews them, and they are never shared. The upload and the converted FLAC are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.
Why does my FLAC file have silent gaps?
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Usually the WebM carries more than one audio track and the one that was converted is silent or secondary. The converter picks one audio track automatically, normally the main one, and this page has no setting to choose a different track. If the wrong one comes out, remux the WebM with the track you want first (VLC or ffmpeg can do this) and convert it again.
Does the extracted FLAC play on iPhone / Android / car stereo?
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MP3 plays almost everywhere. AAC plays on Apple devices, most Android phones and Sonos. OGG and Opus need a recent player on iOS but play in Chrome, Firefox and VLC. There are no device presets on this page, so choose the target format your player supports.
