Man in a van wrote: 
> Thanks for the explanation Mr.  *bpa*
> 
> I think I have seen similar listing in other url downloads.

Final bit. HLS and DASH can be used for video as well as audio.

In theory both DASH and HLS allow for dynamic changing of "service" so
that if for example,  network gets busy & throughput goes down -
invisible switch down to a lower quality/rate version so no rebuffering.
Video streaming service such as Netflix does this. Well suited to
mobile connections.

There is a wide choice of audio codecs and "transports" within each
chunk such as simple MP3, AAC (and a few others I've forgotten)  and
then MPEG2-TS (same a digital terrestrial/satellite) and also MPEG4.

Currently in V2 the MPEG2-TS support - if video is present it is
discarded (although not all stream are supported - I'm trying to fix one
problem stream). I'm trying to add MPEG4 support which should also
discard the video - in which case this maybe useful to the Mixcloud live
service.  

HLS is a messy standard - it seem to be a grab bag of all formats and as
such loads of possible combination.  The MPEG4 support is based on
streamed segmented MPEG-4 which is basically DASH compliant (so alot of
ISO DASH is now in IETF HLS ).


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