[vlc-devel] MPEG-DASH and the likes

Christopher Mueller christopher.mueller at itec.aau.at
Fri Aug 30 12:50:26 CEST 2013


I was on vacation and have seen that thread a little bit late ;). Regarding the DASH module we had no development resources left to update the module for a while but we spent much time on the development of the official MPEG-DASH reference software libdash [1], which implements the normative parts of the standard and is open source available under LGPL. To show the functionally we also provide a sampleplayer based on QT.

We have also plans to integrate it into VLC but for now we are not sure how we will do that. An idea was to provide packages for the distributors (Debian, Ubuntu, etc.) and use it as external libray within VLC. Suggestions are welcome ;).

[1] https://github.com/bitmovin/libdash


-----Original Message-----
From: vlc-devel [mailto:vlc-devel-bounces at videolan.org] On Behalf Of Frédéric Yhuel
Sent: Donnerstag, 29. August 2013 23:24
To: Mailing list for VLC media player developers
Subject: Re: [vlc-devel] MPEG-DASH and the likes

On Thu, Aug 29, 2013 at 6:17 PM, Robert Forsman <bob.forsman at ericsson.com> wrote:
> On Wed, 28 Aug 2013 22:59:40 +0200
> Frédéric Yhuel <yhuelf at gmail.com> wrote:
>> But before I do, I'd like to know if it is worthwhile doing so. 
>> Smooth Streaming doesn't seem to be used much in a DRM-free context, 
>> but maybe I'm wrong. And what do you think of MPEG-DASH? Is it going 
>> to take off? Is there a point for VLC users?
> There is a DASH Industry Forum with members like Ericsson, Harmonic, 
> Microsoft, Netflix, VisualOn and many others.
> http://groupspaces.com/dashif/
> Since the DASH standard is so wide and open (there's no good reason 
> you can't have a DASH manifest with OGG vorbis segments) the DASH-IF 
> makes it their job to narrow things down like
> * pick specific codecs, profiles, and resolutions
> * decide best practices for ad insertion/substitution
> * decide how DRM should be done
> * develop test media (which usually is not licensed for distribution 
> outside the group)
> The members of this group are mostly companies who sell client and 
> server software and hardware.  Some of the individual people have the 
> DASH-IF participation as their primary job assignment from their 
> employer.
> There are companies working to deploy DASH (Netflix is already using 
> DASH-style segments, but not DASH .MPDs).  Unfortunately, most of the 
> entities spending resources to deploy DASH are doing it to make money, 
> so what they will eventually deploy will be protected by DRM, and VLC 
> probably won't play it.
> A recent mailing list thread was to organize a virtual plugfest at 
> IBC, so the various client and software makers could route media 
> between booths and brag about how "You can see the output of our 
> encoder playing on software in these other booths.  See how well we 
> interoperate?"
> There is a possibility that a secondary ecosystem will arise with 
> content that could be rendered by free software like VLC but the folks 
> investing resources in it right now are doing so because they 
> anticipate a monetary return on that investment.

Robert, thank you very much for these interesting information from behind the scene!

I think j-b told me about the new french TNT 2.0 with DASH support last September:

so a DASH client module might become useful for VLC users. But I don't know what's actually going on.

Best regards,
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