I didn't take time to try to understand why. Either this is because echonest's analyzed mp3 isn't the same as mine. Or the function to compute distance between beats isn't generic enough.
Analyze your own, it'll be much better when you're doing synchronous stuff like this. Our canonical audio is likely very different in bitrate or time to start.
It doesn't work as well as in gangnam style.
I didn't take time to try to understand why. Either this is because echonest's analyzed mp3 isn't the same as mine. Or the function to compute distance between beats isn't generic enough.