plant wrote...
a more clearer/better sounding 'high-definition' quality video
I read somewhere that the sound is more distorted
when using the secret code.. it's only the video that is improved. So I leave it as is for music.
It depends on the video in question. Usually, the sound and video are
much better than the normal stream in &fmt=18, but there are some videos that look and/or sound better in &fmt=6. And there's about one or two videos that work best when compressed to standard Youtube size. :P