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 M4R files.
WebM to M4R Conversion FAQ
How do I extract just the audio track from WebM as M4R?
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Upload the WebM file and the converter demuxes the audio stream from the WebM container, then transcodes it into M4R. Video frames are discarded — no second video pass, no quality loss beyond what the M4R codec itself introduces. WebM is a strict subset of Matroska that Google published in 2010 specifically to give HTML5 video a royalty-free container. M4R is an iPhone ringtone — an ordinary AAC file in an MP4 container with the extension changed so iTunes files it as a tone.
Is converting WebM to M4R a second round of lossy compression?
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Yes, and it is worth planning around. Both formats are lossy, so the M4R encoder is working from audio that has already been through one psychoacoustic pass, and its own decisions compound the first set. At 192 kbps or above the result is still transparent for most listening. If you have a lossless master anywhere, encoding the M4R from that instead avoids the double pass entirely. WebM is deliberately narrow: VP8 or VP9 video (AV1 more recently) with Vorbis or Opus audio, and nothing else. The payload is AAC, conventionally capped at 40 seconds, which is the longest tone iOS will accept.
Can I tag the M4R 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. M4R 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. M4R drops straight into the iOS Sounds list via Finder or iTunes with no further processing.
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 M4R file use?
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A lossy M4R 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 M4R (WAV, FLAC) ignores the bitrate and keeps every sample.
Will going from WebM to M4R reduce my audio quality?
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If the M4R format is lossless (WAV, FLAC, ALAC), every original sample is preserved. If M4R 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 M4R keep the WebM sample rate?
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By default yes — 48 kHz WebM audio becomes 48 kHz M4R 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 M4R) the sample-rate dropdown does this with high-quality resampling.
Can I batch-extract M4R 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 M4R 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 M4R 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 M4R have silent gaps or wrong audio?
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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.
