[pulseaudio-tickets] [Bug 65703] High latency in HTTP streaming

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65703

--- Comment #24 from Amar Akshat <amar.akshat at gmail.com> ---
(In reply to comment #18)
> (In reply to comment #6)
> > I was able to reproduce it, First I was assuming that client device
> > buffering would have been issue, however the latency increases with time, it
> > seems the bit rates are different.
> 
> Hi Amar Akshat,
> 
> please correct me if there's misunderstanding. I knew littlbe about uPnp and
> Rygel, even i donot setup the environment to reproduce this issue yet. After
> some google search and study, i assume the whole picture like below:
> 
> 1) you're using some Andorid based uPnp player(like BubbleUPnP or other) as
> control point and player software.

I was using, UPnP Play from Cybergarage.

> 2) Rygel was running and you could get exported media files from other uPnp
> devices through uPnp player.
> 3) Pa could export devices in the DLNA network, maybe local device or other
> uPnp deivce has audio playback capability.
> 4) uPnp player could see above PA devices through Rygel system.
> 5) uPnpn player could choose media files and play them through previous
> exported PA device.
> 
> In software level, i assume some operations like below:
> 1) Rygel get media data and send them to Gstreamer
> 2) Media data routed to Pulesaudio and send out to selected PA sink through
>    http-protocol. The issue is high latency here.
> 
> Still i donot quite understand the role of module-rygel-media-server here.
> i need some time to get things clear. please let me know whether something
> was wrong.

Yes, before the rygel factor we need to identify the latency due to the plain
streaming over http.
So, you don't really need to use rygel module and any UPNP client to be able to
reproduce it.

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