Step 1: Provide your WebM files using the button above or by toss and let go.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Fetch your converted FLAC files.
WebM to FLAC Conversion FAQ
How do I extract just the audio track from WebM as FLAC?
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Upload the WebM file and the converter demuxes the audio stream from the WebM container, then transcodes it into FLAC. Video frames are discarded — no second video pass, no quality loss beyond what the FLAC codec itself introduces. WebM is a strict subset of Matroska that Google published in 2010 specifically to give HTML5 video a royalty-free container. FLAC is the Free Lossless Audio Codec, an open format from 2001 that compresses without discarding a single sample.
Does converting WebM to FLAC improve the audio quality?
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No, and it is worth being blunt: nothing can. The WebM already discarded detail during its original encode, and wrapping what remains in a lossless FLAC preserves exactly that — no more. The file gets several times larger and sounds identical. It is still the right move before editing, because FLAC will not add a second generation of artefacts when you export. FLAC gives you WAV fidelity at half the size, with proper metadata tags and embedded artwork, which is why it dominates lossless music libraries. WebM is a poor fit anywhere outside a browser — video editors, phones’ native galleries and Smart TVs largely ignore it.
Can I tag the FLAC with artist and album information?
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Yes, and it is a genuine gain over WebM, which has nowhere dependable to store any of it. FLAC carries title, artist, album, year, track number and embedded cover art in the container itself, so a music library files it correctly without a manual pass.
Will the FLAC play in my car or on older hardware?
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Often not. WebM is decoded by essentially everything, including car head units and elderly players; FLAC needs software that knows the codec, which standalone hardware frequently does not have. If the destination is a car stereo or a portable player, that is a strong argument for staying on WebM. FLAC is still several times larger than a good lossy file, and Apple’s ecosystem only added support recently and grudgingly.
Which audio track gets extracted when my WebM has several?
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One track, picked automatically: normally the main one, the track with the most channels. This page has no setting to choose a different track and does not list the tracks in the file. If you need commentary or a dub instead, remux the WebM with that track first (VLC or ffmpeg can do this) and convert it again.
What 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. FLAC uses linear prediction plus Rice coding to reach roughly 50-60% of the original size while decoding back to bit-identical PCM.
Will going from WebM to FLAC reduce my audio quality?
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If the FLAC format is lossless (WAV, FLAC, ALAC), every original sample is preserved. If FLAC is lossy (MP3, AAC, OGG, Opus), the codec recompresses — at 192 kbps the difference is inaudible for most content; at 96 kbps you may hear cymbals or sibilants softening. The WebM container has no influence on this — only the codec settings matter.
Does the extracted FLAC keep the WebM sample rate?
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By default yes — 48 kHz WebM audio becomes 48 kHz FLAC audio, 44.1 kHz becomes 44.1 kHz. If you need to downsample for compatibility (e.g. 96 kHz studio masters to 44.1 kHz CD-quality FLAC) the sample-rate dropdown does this with high-quality resampling.
Can I batch-extract FLAC audio from a folder of WebM files?
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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 1-hour WebM 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.
Is my WebM 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.
