Under Prohibitions:
"8. separate, isolate, or modify the audio or video components of any YouTube audiovisual content made available through the YouTube API;
9. promote separately the audio or video components of any YouTube audiovisual content made available through the YouTube API;
10. access any portion of any YouTube audiovisual content by any means other than use of a YouTube player or other video player expressly authorized by YouTube;
I'm not sure about the legal issue here though. If I see it correctly, you are downloading the songs to your server and serve the file from there. A lot of content that is uploaded is often times illegal, so you might be charged for distributing illegal content (illegal as in copyright).
What I'm also wondering. How come the parsing takes so long? I know other services that are a lot faster. Is it just the speed limit of the server itself?
First of all I'm sorry it takes so long. I actually used this for extracting the mp3 https://github.com/flagbug/YoutubeExtractor
As for the legal issue, I'll take it down if they ask me to. I've seen other YouTube video extracting things which makes me think YouTube doesn't mind so much
WOW, thank you so much. There are lot of underground DJs on YouTube who upload their remixes and you can't find them anywhere else on the internet. Downloading the YouTube video and extracting the sound is the only way to preserve their work and listen to it offline.
You may want to look into youtube-dl (http://rg3.github.io/youtube-dl/). This tool seems to limit the bitrate to 64kpbs, while youtube-dl lets you configure the audio quality.
I'm sure I've read something in the ICANN rules that says domains containing a trademark can be petitioned against (although that may only be for exact wording). If they can do it, Google aren't exercising the right to it as there are other domains that have been around longer.
Under Prohibitions: "8. separate, isolate, or modify the audio or video components of any YouTube audiovisual content made available through the YouTube API;
9. promote separately the audio or video components of any YouTube audiovisual content made available through the YouTube API;
10. access any portion of any YouTube audiovisual content by any means other than use of a YouTube player or other video player expressly authorized by YouTube;
11. store copies of YouTube audiovisual content;"