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Select or drag & drop any MP4, WebM, MOV, MKV, or AVI video file to extract high-bitrate MP3 audio with built-in video preview, optional trim, and studio-grade 320 kbps quality.
Extracting audio from video files separates audio elementary streams from video frames:
AudioBuffer.Scenario: Converting a 1-hour video webinar into an MP3 file for a podcast feed.
File: zoom_webinar.mp4 (1.5 GB Video, 1080p, 60m duration)
Exported: zoom_webinar.mp3 (Size: 82 MB at 192 kbps, Extracted in 8 seconds)
Extracts clean speech audio in seconds without uploading the 1.5 GB video file.
Scenario: Extracting a live guitar solo from an iPhone video recording.
File: concert_clip.mov | Trim: 01:30 to 03:30 | Format: MP3 320 kbps
Exported: guitar_solo.mp3 (Size: 4.8 MB, 320 kbps High Bitrate)
Trims and extracts pristine high-bitrate MP3 audio from the video clip.
Cut, trim, and split MP3, WAV, AAC, and FLAC audio files in browser with millisecond waveform precision, fade effects, and zero server uploads.
Split long audio files, podcasts, audiobooks, and live DJ sets into equal-duration parts or custom chapter cue points in real time.
Merge and combine multiple audio files (MP3, WAV, AAC, M4A) into a single continuous track with crossfade transitions and reordering.
Extract crystal-clear audio tracks from MP4, WebM, MOV, AVI, and MKV video files in browser memory with zero server uploads.
Compress MP3, WAV, AAC, and FLAC audio files in browser memory. Reduce audio file sizes by up to 80% with custom bitrate and sample rate controls.
Convert audio files between MP3, WAV, AAC, M4A, FLAC, OGG, and WebM formats in browser memory with custom bitrates and batch queue processing.
Speed up or slow down audio recordings from 0.25x to 3.0x with pitch-preservation WSOLA time-stretching or classic tape-varispeed effects.
Transpose musical key and vocal pitch up or down by semitones and cents (-12 to +12 semitones) without altering audio tempo or speed.
Reverse audio recordings, songs, and voice clips backwards in real time to create eerie sound effects, reverse cymbal swells, and backmasking.
Boost audio volume up to 500% (+14 dB) with soft-knee peak limiting to prevent harsh digital clipping and audio distortion in real time.
Normalize audio loudness to industry broadcast standards (-14 LUFS Spotify/YouTube, -16 LUFS Apple Podcasts, -23 LUFS EBU R128) in real time.
Apply smooth Fade-In, Fade-Out, and multi-point keyframe volume automation envelopes to MP3, WAV, and AAC audio in real time.
Create custom smartphone ringtones, text message chimes, and alarm tones from songs with waveform clipping, volume boosting, and M4R/MP3 export.
Record high-fidelity audio from your microphone in browser memory with real-time waveform visualizer, pause/resume, and MP3/WAV export.
Test your microphone online in real time with live frequency spectrum analyzer, input volume VU meter, loopback playback, and device selector.
Test left/right stereo channels, sub-bass response, 20Hz-20kHz frequency sweeps, and phase polarity for speakers and headphones in real time.
Detect song tempo (Beats Per Minute) automatically from audio files or tap along in real time to calculate musical BPM and millisecond delay times.
View, edit, and update MP3 ID3v1 and ID3v2 metadata tags (Song Title, Artist, Album, Year, Genre, Track Number) and embed album artwork in browser memory.