Developer Elliot Bentley launched oTranscribe in October 2013. Still switching between word processor and media player, it bothered him. Therefore, you can be in oTranscribe the sound that you unsubscribe're hearing and play it back quickly and serve. The counter for the number of words is useful for the amount of text to estimate.
oTranscribe plays all audio and video files where your web browser handle that can. Under the button "Choose audio (or video) file" state, which formats your browser is probably able to play. For example, with Google Chrome "Your browser supports mp3/ogg/webm/wav audio files and mp4/ogg/webm video files." and with Safari: "Your browser supports mp3/wav audio files and mp4 video files."
The greatest chance of success do you have with WAV for audio and MP4 for video. If you have another format you can convert the file with a free online tool like media.io where oTranscribe links. Although you are more likely to own equipment will work out, you can YouTube videos download as MP4 with a tool like ytconv.net.
Note: websites that YouTube videos to downloadable create are often full of ads that appear on buttons that you must press to start the conversion but instead an ad open. Careful where you click.
You can free download oTranscribe and safe install the latest trial or new full version for Windows 10 (x32, 64 bit) from the official site.