Some music videos on YouTube are available in more than one resolution.
Do they all have the same audio quality? Or do the videos with larger resolution have better audio?
Youtube – Any difference in audio quality for various YouTube video resolutions
audioyoutube
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Best Answer
Wikipedia has a table with different conversions and also the audio related to them.
As of Jan 2013
Quality and codecs
I'm sure the sound quality might have to do a lot with flash player as well, but I'm no expert on that.