Pull the audio out of any video and save it as MP3 or M4A, right in your browser. No upload, no signup, no watermark.
Drop a video or click to browse
Extract the audio as MP3 or M4A, in your browser
100% in your browser — your file never leaves your device · up to 500 MB
Drop your video
Drag and drop an MP4, MOV, WebM or MKV file. It is read locally and never uploaded.
Pick MP3 or M4A
Choose MP3 for universal compatibility or M4A (AAC) for a smaller file, and a bitrate from 128 to 320 kbps.
Extract and download
The audio track is decoded and encoded in your browser. Preview it, then download.
320 kbps MP3 is effectively transparent for music. For voice and podcasts, 128 kbps is plenty and keeps the file tiny. Compress the video instead
Get a universal MP3 that plays on every device, or a smaller modern M4A (AAC). Pick the bitrate from 128 to 320 kbps.
The audio is decoded and encoded entirely on your device. Your video never leaves your browser, which is faster and private.
No app to install and never a watermark. Drop a video, choose a format, and download the audio in seconds.
A video file holds a video stream and an audio stream wrapped together. Extracting audio means decoding just the audio stream and saving it on its own. omnikitbolt decodes the audio in your browser, then encodes it to MP3 (using a built-in encoder) or to M4A with the AAC codec. The whole process runs locally with the WebCodecs API, so the video never leaves your device.
MP3 is the safest choice because it plays on literally everything, from old car stereos to every phone and app. M4A uses the more efficient AAC codec, so it is a little smaller at the same quality and is great for Apple devices and modern players. For most people sending a clip or saving a song, MP3 is the right default.
No. Most online MP4 to MP3 converters upload your whole video to a server. omnikitbolt does the extraction in your browser, so your file stays private and there is no upload wait.
Convert Video
Convert MOV, AVI, MKV, WebM to MP4 (and back) in-browser, no upload
Compress Video
Compress MP4, MOV, WebM, MKV up to 80% in-browser via WebCodecs, no upload
Mute Video
Remove the audio from a video in-browser, instant, no re-encode, no upload
Trim Video
Cut a clip from a video (set start/end with live preview) in-browser, no upload
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