gallafent wrote: > > dave4jazz wrote: > > > > > > /high/ will give you 128kb/s AAC-LC in general. /sbr_high/ will give you > > 320kb/s AAC-LC :) > > > > See, an upgrade! Who knew!> > > > HLS is ABR (adaptive bitrate) capable. I'm guessing the 'sbr' > manifests offer a single bitrate where there others offer a choice. > Presumably /high/ will give both 128 and 320 and /low/ will give both > 96 and 48. They will be separated like that as decoders don't handle > switching codec family (AAC-LC to HE-AAC) on the fly very well. I > would stick with the single bitrate /sbr_.../ manifests to avoid > bitrate switching. > > Also, in my experience, VLC (on windows) is not very good at playing > HLS, if the downloaded segments get out of order it gits very confused > and skips/repeats segments till you kill it. > > Prior to Audio Factory the Beeb used Akamai to make their HLS streams > which would explain the difference in metadata content between the > World Service (not yet on Audio Factory) and domestic radio streams. > > The Beeb likes to deliver its metadata (including images) out of band > so it can tailor it to suite the display/network bandwidth of the > playing device. > > Finally a word of caution, just because a stream is 320kbs it isn't > necessarily HD Sound. That requires the audio to be encoded without > processing and my ears tell me that, apart from Radio 3 and some of > the Nations stations (Cymru, Nan Gaidheal), that isn't the case. > Maybe that will be in the next upgrade!
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