YouTube format 171 incorrect quality specified.

[YellowOnion]

YouTube format 171 is a 128kbps~ Vorbis stream (I think technically its variable bitrate @ q4)

48k is most likely the sample rate, and it definitely sounds better than any 48k Vorbis I've ever heard.

171         webm      audio only  DASH audio , audio@ 48k (worst)

MediaInfo says otherwise:

Audio
ID                                       : 1
Format                                   : Vorbis
Format settings, Floor                   : 1
Codec ID                                 : A_VORBIS
Duration                                 : 1mn 6s
Bit rate mode                            : Variable
Bit rate                                 : 128 Kbps
Channel(s)                               : 2 channels
Sampling rate                            : 44.1 KHz
Compression mode                         : Lossy
Stream size                              : 1.02 MiB
Language                                 : English
Default                                  : Yes
Forced                                   : No
Writing application                      : Google

[YellowOnion]

Never mind I forgot to update, looks like its fixed.