Why Use a 100% Client-Side Video Transcoder & WAV Audio Extractor?
Whether you need to rip the audio track from a recorded lecture or meeting for AI transcription, fix a sideways smartphone video, or shrink a 100 MB screen recording down to a 5 MB WebM/MP4 clip for GitHub issues or email attachments, uploading gigabytes of private footage to third-party cloud converters is slow and risky.
- Studio-Grade 16-Bit PCM WAV Ripper: Extracts raw stereo audio with interactive waveform trimming, volume gain normalization, and smooth fade-in/fade-out ramps in milliseconds.
- Hardware-Accelerated Bitrate Control & Geometric Transforms: Rotate `90° / 180° / 270°`, mirror-flip selfie footage, strip audio tracks, and dial in exact target bitrates (`500 kbps` to `8000 kbps`) entirely inside your browser.
Frequently Asked Questions (FAQ)
Q1 How does the lossless WAV audio extractor work without uploading my video?
When you drop an MP4, MOV, or WebM file, our workbench uses your browser’s hardware-accelerated
AudioContext.decodeAudioData API to decode the audio track into raw floating-point PCM channels. It then constructs a standard 44-byte RIFF WAVE header and interleaves 16-bit PCM samples directly in memory—complete with visual waveform trimming, volume gain boost, and smooth fade-in/fade-out envelopes. Q2 How can I compress a large smartphone video to fit Discord, email, or form upload limits?
Switch to **Mode 2: Video Transcode, Rotate & Bitrate Slimming**, select a target bitrate of
1000 kbps (1 Mbps) or 2000 kbps (2 Mbps), and optionally scale resolution to 75%. Using the hardware-accelerated VP9 / MP4 encoder typically shrinks smartphone footage by 70%–85% while keeping visuals crisp. Q3 Can I fix sideways (90°/270°) or mirrored selfie videos in the browser?
Yes. Choose
90°, 180°, or 270° rotation and toggle **Horizontal Mirror Flip** while watching the live transform canvas monitor, then click Start Local Video Transcode to bake the corrected orientation into the output file.