How to select a bitrate on multiple bitrate stream? Eki 12/12/2008 11:01:01 PM When the stream is encoded with multiple bitrate, how do you select on the server on what bitrate the content will play? Example: a single source encodes at 45k and 300k. What is the procedure on a Windows Media sever, to create two publishing points one at 300k and other at 45k?

Re: How to select a bitrate on multiple bitrate stream? "Neil Smith [MVP Digital Media]" <neil[ at ]nospam.com> 12/13/2008 1:50:20 PM On Fri, 12 Dec 2008 15:01:01 -0800, Eki <Eki[ at ]discussions.microsoft.com> wrote: [Quoted Text] >When the stream is encoded with multiple bitrate, how do you select on the >server on what bitrate the content will play? > >Example: a single source encodes at 45k and 300k. What is the procedure on a >Windows Media sever, to create two publishing points one at 300k and other at >45k? The server automatically stream-selects the appropriate bitrate in a negotiation phase with media player. There's no need to create 2 separate bitrate PPs for this. There's great detail on this at this MS webpage : http://www.microsoft.com/windows/windowsmedia/howto/articles/intstreaming.aspx Note that you can use stream modifiers (URL query strings) to hard-limit the maximum bitrate delivered for some applications (e.g. the WMContentBitrate) but in general it's best to let the server do its job without manual intervention. That setting would normally be used only if you had a MBR with (say) a 1Mbps stream and for delivery sizing reasons you decided that you didn't want to send such a high bitrate from the MBR file contents. Additional summary info about intelligent streaming is on this page : http://learn.iis.net/page.aspx/454/windows-media-server-or-web-server/ HTH Cheers - Neil ------------------------------------------------ Digital Media MVP : 2004-2008 http://mvp.support.microsoft.com/mvpfaqs

Re: How to select a bitrate on multiple bitrate stream? Eki 12/13/2008 5:04:01 PM I've tried to use this example: <?wsx version="1.0"?> <smil> <media src="lpp://pp1?WMBitrate=45000" /> </smil> but this one doesn't changes the bitrate, it still plays 300k, so I tried: <?wsx version="1.0"?> <smil> <media src="lpp://pp1?WMContentBitrate=45000" /> </smil> with the same result. After I tried combined (as in example at ) <?wsx version="1.0"?> <smil> <media src="lpp://pp1?WMBitrate=45000&WMContentBitrate=45000" /> </smil> but this one produces error: "The server was unable to parse requested playlist file eror code: 0xc00d14b6" "Neil Smith [MVP Digital Media]" wrote: [Quoted Text] > On Fri, 12 Dec 2008 15:01:01 -0800, Eki > <Eki[ at ]discussions.microsoft.com> wrote: > > >When the stream is encoded with multiple bitrate, how do you select on the > >server on what bitrate the content will play? > > > >Example: a single source encodes at 45k and 300k. What is the procedure on a > >Windows Media sever, to create two publishing points one at 300k and other at > >45k? > > The server automatically stream-selects the appropriate bitrate in a > negotiation phase with media player. There's no need to create 2 > separate bitrate PPs for this. > > There's great detail on this at this MS webpage : > http://www.microsoft.com/windows/windowsmedia/howto/articles/intstreaming.aspx > > Note that you can use stream modifiers (URL query strings) to > hard-limit the maximum bitrate delivered for some applications (e.g. > the WMContentBitrate) but in general it's best to let the server do > its job without manual intervention. > > That setting would normally be used only if you had a MBR with (say) a > 1Mbps stream and for delivery sizing reasons you decided that you > didn't want to send such a high bitrate from the MBR file contents. > > Additional summary info about intelligent streaming is on this page : > http://learn.iis.net/page.aspx/454/windows-media-server-or-web-server/ > > HTH > Cheers - Neil > ------------------------------------------------ > Digital Media MVP : 2004-2008 > http://mvp.support.microsoft.com/mvpfaqs >

Re: How to select a bitrate on multiple bitrate stream? "Neil Smith [MVP Digital Media]" <neil[ at ]nospam.com> 12/14/2008 9:30:42 PM On Sat, 13 Dec 2008 09:04:01 -0800, Eki <Eki[ at ]discussions.microsoft.com> wrote: [Quoted Text] >lpp://pp1?WMBitrate=45000&WMContentBitrate=45000 That is not valid XML (which is what SMIL is) So, no it can't parse it. Try lpp://pp1?WMBitrate=45000&WMContentBitrate=45000 HTH Cheers - Neil ------------------------------------------------ Digital Media MVP : 2004-2008 http://mvp.support.microsoft.com/mvpfaqs

Re: How to select a bitrate on multiple bitrate stream? Eki 12/14/2008 9:48:00 PM Thanks, this removes the error, but still no bandwidth throttling... "Neil Smith [MVP Digital Media]" wrote: [Quoted Text] > On Sat, 13 Dec 2008 09:04:01 -0800, Eki > <Eki[ at ]discussions.microsoft.com> wrote: > > >lpp://pp1?WMBitrate=45000&WMContentBitrate=45000 > > That is not valid XML (which is what SMIL is) > > So, no it can't parse it. Try > > lpp://pp1?WMBitrate=45000&WMContentBitrate=45000 > > HTH > Cheers - Neil > ------------------------------------------------ > Digital Media MVP : 2004-2008 > http://mvp.support.microsoft.com/mvpfaqs >