Step 1: Transfer your MP4 files using the button above or by slide and deposit.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Retrieve your converted WAV files.
MP4 to WAV Conversion FAQ
How do I extract the audio from my MP4 file as WAV?
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Upload the MP4 file and the converter demuxes the audio stream, then transcodes it to WAV. There is no second video pass — the visual track is discarded immediately so extraction is much faster than a full re-encode. MP4 is ISO/IEC 14496-14, standardised in 2001 and derived from the same QuickTime box layout MOV uses. WAV is Microsoft and IBM’s RIFF-based audio container from 1991, and it is what almost every audio interface and DAW writes on record.
Does converting MP4 to WAV improve the audio quality?
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No, and it is worth being blunt: nothing can. The MP4 already discarded detail during its original encode, and wrapping what remains in a lossless WAV preserves exactly that — no more. The file gets several times larger and sounds identical. It is still the right move before editing, because WAV will not add a second generation of artefacts when you export. WAV is the correct format for editing, mastering and archiving, because it can be re-encoded any number of times without accumulating artefacts. MP4 only supports one widely-honoured subtitle format (mov_text), and multi-track audio is unreliable outside desktop players.
What audio bitrate does the extracted WAV use?
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A lossy WAV 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 WAV (WAV, FLAC) ignores the bitrate and keeps every sample.
Will I lose audio quality going from MP4 to WAV?
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If WAV is lossless (WAV, FLAC), every sample is preserved exactly. If WAV is lossy (MP3, AAC, OGG, Opus), the WAV codec recompresses the source audio — at 192 kbps the result is transparent for almost all content. Going lossy → lossless never recovers detail already discarded. WAV normally stores raw uncompressed PCM — every sample kept exactly, at whatever bit depth and sample rate was captured.
Can I extract audio from multiple MP4 files to WAV 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 WAV audio from a 1-hour MP4 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 MP4 audio as WAV?
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Not in this tool directly — extract the full audio as WAV, then use /audio-trim/ or /audio-cutter/ to clip the section. The two-step path is usually faster than a combined operation and gives you precise waveform-level control.
Is my MP4 file private during the audio extraction?
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Yes. Uploaded MP4 files are processed on our own conversion servers, no person reviews them, and they are never shared. The upload and the converted WAV 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 the WAV file have silent gaps where the MP4 had sound?
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Usually the MP4 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 MP4 with the track you want first (VLC or ffmpeg can do this) and convert it again.
