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MediaPortal 1
Support
Watch / Listen Media
Television (MyTV frontend and TV-Server)
Upgraded my TV server now have live tv stuttering/pixelation
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<blockquote data-quote="mm1352000" data-source="post: 1164548" data-attributes="member: 82144"><p>Hello again Jonathan</p><p></p><p></p><p>Sorry to hear that.</p><p></p><p></p><p>Please update your forum profile system specifications to reflect the changes. When you do that, please also ensure everything else (especially MediaPortal and Windows versions) is up to date.</p><p></p><p></p><p>This should not surprise you. <a href="https://forum.team-mediaportal.com/threads/upgraded-my-tv-server-now-have-live-tv-stuttering-pixelation.132374/page-3#post-1157213" target="_blank">I previously indicated</a> that discontinuities can be caused by HDD load. You said you were going to take a look, but subsequently have said nothing further about it. I'm left uncertain about whether you followed up or not.</p><p></p><p></p><p>The conditions of your test are not sufficiently clear.</p><p></p><p>Are you testing <strong>solely</strong> on the server (eg. TV Server Configuration -> TV Channels section -> preview function), or are you using one of your clients to view the picture during the test?</p><p></p><p>If a client is involved, that obviously means MediaPortal and/or TV Server are going to be using your network. That being the case, it shouldn't be particularly surprising that a concurrent network stress test could disrupt the picture etc. in the way you described. MediaPortal's default configuration is to use <a href="https://en.wikipedia.org/wiki/Real_Time_Streaming_Protocol" target="_blank">RTSP</a> streaming to acquire the TV feed from TV Server. As is commonly the case, our implementation of RTSP uses the <a href="https://en.wikipedia.org/wiki/Real-time_Transport_Protocol" target="_blank">RTP</a> protocol/format for transferring the content (ie. video, audio etc.). RTP in turn usually (in the case MP/TV Server: always) uses <a href="https://en.wikipedia.org/wiki/User_Datagram_Protocol" target="_blank">UDP</a> as its underlying transport protocol. UDP is an "unreliable" protocol, which means there's no guarantee that a sent packet will arrive at its destination. In times of high network load (eg. a stress test), it would not be unreasonable for switches, routers, or other intermediate nodes to drop UDP packets. This could explain the situation.</p><p></p><p></p><p>Please refer to my previous comment regarding the possible causes of discontinuities. If you would like a more specific answer then you will need to provide more specific information about your situation.</p><p></p><p></p><p>My feeling is that this thread has lost its focus, and therefore I'm finding it difficult to help you.</p><p>If you're actively troubleshooting a <strong>specific </strong>problem and you would like my help with it, please:</p><ol> <li data-xf-list-type="ol">Ensure your forum profile system specifications are fully up to date.</li> <li data-xf-list-type="ol">Reduce/simplify the steps or conditions required to reproduce the problem as much as possible. For example, if you can reproduce the problem on the server by itself then do that (ie. completely exclude the clients).<br /> </li> <li data-xf-list-type="ol">Describe the situation (eg. the conditions when the problem does and does not occur, test(s) you're performing etc.) in full, including dates, times, channel names, and client/server involvement where appropriate.<br /> </li> <li data-xf-list-type="ol">Provide full debug-level log files from both client and server using the MediaPortal Watchdog tool where available.</li> </ol><p>In general, the more you reduce/simplify the problem and the better you describe it, the better my chances are of being able to assist you.</p><p></p><p>Regards,</p><p>mm</p><p>P.S. Your forum profile system specifications indicate you're using Windows XP with mixed and older versions of MediaPortal and TV Server. I don't know if that information is actually correct. If it is, our support will be limited.</p></blockquote><p></p>
[QUOTE="mm1352000, post: 1164548, member: 82144"] Hello again Jonathan Sorry to hear that. Please update your forum profile system specifications to reflect the changes. When you do that, please also ensure everything else (especially MediaPortal and Windows versions) is up to date. This should not surprise you. [URL='https://forum.team-mediaportal.com/threads/upgraded-my-tv-server-now-have-live-tv-stuttering-pixelation.132374/page-3#post-1157213']I previously indicated[/URL] that discontinuities can be caused by HDD load. You said you were going to take a look, but subsequently have said nothing further about it. I'm left uncertain about whether you followed up or not. The conditions of your test are not sufficiently clear. Are you testing [B]solely[/B] on the server (eg. TV Server Configuration -> TV Channels section -> preview function), or are you using one of your clients to view the picture during the test? If a client is involved, that obviously means MediaPortal and/or TV Server are going to be using your network. That being the case, it shouldn't be particularly surprising that a concurrent network stress test could disrupt the picture etc. in the way you described. MediaPortal's default configuration is to use [URL='https://en.wikipedia.org/wiki/Real_Time_Streaming_Protocol']RTSP[/URL] streaming to acquire the TV feed from TV Server. As is commonly the case, our implementation of RTSP uses the [URL='https://en.wikipedia.org/wiki/Real-time_Transport_Protocol']RTP[/URL] protocol/format for transferring the content (ie. video, audio etc.). RTP in turn usually (in the case MP/TV Server: always) uses [URL='https://en.wikipedia.org/wiki/User_Datagram_Protocol']UDP[/URL] as its underlying transport protocol. UDP is an "unreliable" protocol, which means there's no guarantee that a sent packet will arrive at its destination. In times of high network load (eg. a stress test), it would not be unreasonable for switches, routers, or other intermediate nodes to drop UDP packets. This could explain the situation. Please refer to my previous comment regarding the possible causes of discontinuities. If you would like a more specific answer then you will need to provide more specific information about your situation. My feeling is that this thread has lost its focus, and therefore I'm finding it difficult to help you. If you're actively troubleshooting a [B]specific [/B]problem and you would like my help with it, please: [LIST=1] [*]Ensure your forum profile system specifications are fully up to date. [*]Reduce/simplify the steps or conditions required to reproduce the problem as much as possible. For example, if you can reproduce the problem on the server by itself then do that (ie. completely exclude the clients). [*]Describe the situation (eg. the conditions when the problem does and does not occur, test(s) you're performing etc.) in full, including dates, times, channel names, and client/server involvement where appropriate. [*]Provide full debug-level log files from both client and server using the MediaPortal Watchdog tool where available. [/LIST] In general, the more you reduce/simplify the problem and the better you describe it, the better my chances are of being able to assist you. Regards, mm P.S. Your forum profile system specifications indicate you're using Windows XP with mixed and older versions of MediaPortal and TV Server. I don't know if that information is actually correct. If it is, our support will be limited. [/QUOTE]
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