[Icecast-dev] MPEG DASH

Brad Isbell brad at musatcha.com
Tue Feb 11 06:41:06 PST 2014

Daniel, I won't make any points regarding DASH's fit with Icecast, but I
wanted to address your statement that there is no purpose for adaptive

Cell phone connections are fairly terrible and inconsistent.  Even if you
have a solid signal on a 4G technology, you could walk around a corner and
it will disappear.  What works at 3mbit/s one minute might be 10kbit/s the
next.  Adaptive streaming is most certainly helpful in these situations,
and is one of the reasons I do not exclusively use Icecast for the stations
I work on.

Brad Isbell
brad at musatcha.com

On Tue, Feb 11, 2014 at 6:30 AM, Daniel James <daniel.james at sourcefabric.org
> wrote:

> Hi Thomas,
> > I wrote solid IPR evaluation for a reason.
> It might be helpful to ask bitmovin as a starting point, they have
> released the reference code under LGPL:
> http://www.bitmovin.net/libdash.html
> The LGPL preamble says:
> "we insist that any patent license obtained for a version of the library
> must be consistent with the full freedom of use specified in this license."
> Personally, I don't see the point of adaptive streaming and the implied
> variation in quality. Either the quality you are streaming at is
> acceptable, or you are wasting bandwidth by streaming with too high a
> bitrate, perhaps due to an inefficient codec.
> I suppose the reasoning is that drops in quality are preferable to
> playback interruptions, but why tolerate either in a well-designed
> system? Adaptive streaming seems to say "we know the Internet is not
> really cable TV, but we are going to work around that by providing a
> cruddy picture for those times when available bandwidth does not align
> with our business model" :-)
> In the Icecast community, we might gain more by promoting Opus as a more
> efficient replacement for MP3 streaming, for example.
> Cheers!
> Daniel
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> Icecast-dev at xiph.org
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