Take the sound track out of a video and keep it as an MP3. Lectures, meetings and interviews are the usual reasons, and they are also the files you least want to upload.
Drop in an MP4, MOV, WebM or similar file. It is read in this tab and goes nowhere.
128 kbps is clean for speech. Use 192 kbps or more for music.
You get an MP3 with the same name as the video.
Your browser's own decoder reads the sound from the video, so the formats it can play are the ones that work here. MP4 and MOV from phones and cameras, and WebM from screen recorders, almost always open. Older formats such as AVI and WMV, or files with unusual sound formats, may not.
The whole file is read into memory so the sound can be decoded, which is why there is a size limit of about one gigabyte. A long recording may be better handled by cutting it first. The video part is ignored and never changed.
The sound is encoded once into MP3 at the quality you choose. If the original sound was already compressed, as it nearly always is, there is nothing to gain from choosing the highest setting for speech.
No. The work happens inside this tab, on your own machine. Open your browser's network tab while you use the tool, there is no request carrying your file.
None set by us. Very large files are limited only by your device's memory, and we warn you before that becomes a problem.
No, and there is no daily limit either. There is nothing to sign up for.
MP4, MOV and WebM almost always. Others depend on what your browser can play, and the page tells you if one cannot be read.
About one gigabyte, because the sound has to be held in memory while it is decoded.
No. Only the sound is used and the original file is untouched.