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Multimedia Class Scheduler Service
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<h2 id="problems">Problems</h2> <p>This service has been implicated in poor networking performance while multimedia is playing.<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a><a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> In response to this, Microsoft has included a configurable option<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> in Windows Vista Service Pack 1 and later where users can specify the network throttling index value for the Multimedia Class Scheduling Service so that network performance and audio/video playback quality can be balanced according to how users configure it. </p> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/List_of_Microsoft_Windows_components/DevuU3KN">List of Microsoft Windows components</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"Multimedia Class Scheduler Service". <a href="https://docs.microsoft.com/en-us/windows/win32/procthread/multimedia-class-scheduler-service" target="_blank">https://docs.microsoft.com/en-us/windows/win32/procthread/multimedia-class-scheduler-service</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>"Multimedia Class Scheduler Service". <a href="https://docs.microsoft.com/en-us/windows/win32/procthread/multimedia-class-scheduler-service" target="_blank">https://docs.microsoft.com/en-us/windows/win32/procthread/multimedia-class-scheduler-service</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>"AvSetMmMaxThreadCharacteristics Function (Windows)". <a href="https://docs.microsoft.com/en-us/windows/win32/api/avrt/nf-avrt-avsetmmmaxthreadcharacteristicsa" target="_blank">https://docs.microsoft.com/en-us/windows/win32/api/avrt/nf-avrt-avsetmmmaxthreadcharacteristicsa</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>"AvSetMmThreadCharacteristics Function (Windows)". <a href="https://docs.microsoft.com/en-us/windows/win32/api/avrt/nf-avrt-avsetmmthreadcharacteristicsa" target="_blank">https://docs.microsoft.com/en-us/windows/win32/api/avrt/nf-avrt-avsetmmthreadcharacteristicsa</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Microsoft responds to Vista network performance issue <a href="https://www.zdnet.com/article/microsoft-responds-to-vista-network-performance-issue/" target="_blank">https://www.zdnet.com/article/microsoft-responds-to-vista-network-performance-issue/</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>Sysinternals blog "Vista Multimedia Playback and Network Throughput" <a href="https://docs.microsoft.com/en-us/archive/blogs/markrussinovich/vista-multimedia-playback-and-network-throughput" target="_blank">https://docs.microsoft.com/en-us/archive/blogs/markrussinovich/vista-multimedia-playback-and-network-throughput</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>Microsoft Knowledge base article 948066 <a href="https://web.archive.org/web/20150511052507/https://support.microsoft.com/en-us/kb/948066" target="_blank">https://web.archive.org/web/20150511052507/https://support.microsoft.com/en-us/kb/948066</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> </ol>