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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?

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2 Answers

up vote 9 down vote accepted

Wikipedia has a table with different conversions and also the audio related to them.

YouTube Encoding Details

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.

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Whoa, now that's a definitive answer! Thanks @Muhammad and also @Barry who embedded the table! I'll mark this as my answer. –  pepoluan Apr 21 '11 at 5:28
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Here's a detailed list for audio qualities for different video qualities:

http://www.h3xed.com/web-and-internet/youtube-audio-quality-bitrate-240p-360p-480p-720p-1080p

---------------------------------------------
| <b>Resolution | Audio Bit Rate | Compression |
---------------------------------------------
| Original   | 192 kbps       | AAC         |
---------------------------------------------
| 1080p      | 192 kbps       | AAC         |
---------------------------------------------
| 720p       | 192 kbps       | AAC         |
---------------------------------------------
| 480p       | 128 kbps       | AAC         |
---------------------------------------------
| 360p       | 128 kbps       | AAC         |
---------------------------------------------
| 240p       | 64 kbps        | MP3         |
---------------------------------------------
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