Are my video files uploaded to any external server or cloud?

No. SonicExtract runs 100% locally on your machine within your browser sandbox using the Web Audio API and hardware decoders. Not a single byte or packet of your video ever leaves your computer or phone. You can inspect your browser Network tab to verify that zero file payloads are transmitted.

Is there a video file size or duration limit?

There are zero arbitrary limits imposed by SonicExtract. As an unlimited video to audio converter, you can process 50MB phone clips, 2GB high-definition YouTube files, or 10GB multi-hour conference recordings. As long as your device has sufficient RAM to open the file in memory, the conversion will process smoothly.

Which video container and codec formats are supported?

SonicExtract supports all standard video containers including MP4, WebM, QuickTime MOV, MKV (Matroska), AVI, FLV, 3GP, and MPEG transport streams. Audio streams encoded in AAC, Opus, Vorbis, PCM, MP3, and AC3 are automatically decoded by your browser.

What is the difference between MP3 and WAV export formats?

WAV is an uncompressed 16-bit PCM studio-grade master format that preserves 100% of the acoustic waveform without compression artifacts—ideal for DAW editing, sound design, and transcription. MP3 is a psychoacoustically compressed format (up to 320 kbps) that reduces file size by ~80% while retaining transparent auditory quality for mobile listening.

Do I need to install any software, browser extension, or sign up?

No software installation, browser plugins, account registration, or credit cards are required. The entire utility is an instant, web-native application that functions directly inside modern browsers.

Does SonicExtract work on iOS (iPhone/iPad) and Android?

Yes. SonicExtract is fully responsive and supports Safari on iOS and Chrome/Firefox on Android. Touch targets and layout adhere to mobile design guidelines for a native app feel.

How does the volume booster gain setting work?

The volume boost slider utilizes an in-memory Web Audio GainNode. It mathematically multiplies each audio sample by the specified factor (e.g. 1.5 for 150% boost or 2.0 for 200% boost) before encoding, with automatic peak-limiting to prevent harsh digital clipping.

Can I use SonicExtract offline without an active internet connection?

Yes. Once the web application is loaded into your browser cache, the extraction and audio encoding logic execute entirely on your local CPU and GPU. You can disconnect your Wi-Fi or go into Airplane mode and continue extracting audio seamlessly.

Video to Audio Converter – MP4 to MP3 & WAV Free

Extract 320kbps MP3 or lossless WAV audio from any video instantly. 100% free, private client-side processing, no file limits, no sign-up.

How to Extract MP3 from Video Online

Select or Drop Video: Choose any MP4, MOV, MKV, or WebM video. Zero file size limit.
Configure Format: Select studio MP3 (up to 320kbps) or lossless 16-bit WAV audio.
Extract & Download: Instant client-side hardware extraction. Download directly to your device.

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