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MediaPortal 1
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Ceton tuner w/ Comcast -MP won't display some channels WMC does
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<blockquote data-quote="mm1352000" data-source="post: 1088478" data-attributes="member: 82144"><p>[USER=26653]@milhouse[/USER] </p><p>Thanks for the log files - they're perfect. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite24" alt="(y)" title="Thumbs Up (y)" loading="lazy" data-shortname="(y)" /></p><p>It looks like my guess about the cause of the problem was correct. During the scan the CableCARD is giving TV Server the wrong program number for the channels that aren't working. Taking AMC HD as an example...</p><p></p><p>The information we get from the CableCARD in the scan:</p><p>[2014-06-28 20:59:13,734] [Log ] [24 ] [DEBUG] - S-VCT: source ID = 0x401e, virtual channel number = 862</p><p>[2014-06-28 20:59:18,694] [Log ] [24 ] [DEBUG] - S-VCT: virtual channel number = 862, application virtual channel = False, bitstream select = 0, path select = 0, transport type = Mpeg2, channel type = Normal, source ID = 0x401e</p><p>[2014-06-28 20:59:18,694] [Log ] [24 ] [DEBUG] - S-VCT: CDS reference = 158, program number = 0x102, MMS reference = 4</p><p>[2014-06-28 21:00:39,970] [Log ] [24 ] [DEBUG] - NTT: source name, source ID = 0x401e, name = AMC HD, application type = False</p><p></p><p>Note the program number - 0x102 (hexadecimal notation) = 258.</p><p></p><p>When we tune:</p><p>[2014-06-28 21:03:53,902] [Log ] [4 ] [INFO ] - atsc:Tune:ATSC:tv:Cable AMC HD Freq:997250 ONID:16414 TSID:0 SID:258 PMT:0x0 FTA:False LCN:158 phys:158 maj:862 min:0 mod:Mod256Qam </p><p></p><p>Again, note the program number (SID) matches what we found in the scan.</p><p></p><p>Finally, the Ceton tuning log:</p><p>Jan 6 08:23:47 ocur[21]: ocur: [0] Resolved channel 862 -> freq 639000, prog 459, modulation 16</p><p></p><p>...and there is the problem - 459 does not match the 258 that we got in the scan, and so the tune attempt will fail with the PMT error.</p><p></p><p>I can say with absolute confidence that we're retrieving and storing the information the CableCARD gives us correctly. I suspect the fact that TV Server's program number does not match the Ceton logs is due to a combination of the use of SDV (switched digital video) and Comcast not keeping the VCT (virtual channel table) for CableCARDs up to date. It's a case of garbage in garbage out.</p><p></p><p>I honestly can't think of anything that we can do to solve or even workaround this problem in code. Without a correct program number from the CableCARD we simply can't tune properly.</p><p></p><p>You can workaround this problem by manually correcting the program number for each of your non-working channels. I know it would be painful and I wish I could offer a better solution but at this point I've got nothing.</p><p></p><p>In the meantime I can try to contact Ceton and ask if they have any ideas but don't hold out much hope. To that end it would be helpful to know your zip code (Ceton may know about issues with Comcast in your area). I would also suggest you raise a support ticket with Ceton. Please feel free to refer them to me if they have technical questions.</p><p></p><p>Regards,</p><p>mm</p></blockquote><p></p>
[QUOTE="mm1352000, post: 1088478, member: 82144"] [USER=26653]@milhouse[/USER] Thanks for the log files - they're perfect. (y) It looks like my guess about the cause of the problem was correct. During the scan the CableCARD is giving TV Server the wrong program number for the channels that aren't working. Taking AMC HD as an example... The information we get from the CableCARD in the scan: [2014-06-28 20:59:13,734] [Log ] [24 ] [DEBUG] - S-VCT: source ID = 0x401e, virtual channel number = 862 [2014-06-28 20:59:18,694] [Log ] [24 ] [DEBUG] - S-VCT: virtual channel number = 862, application virtual channel = False, bitstream select = 0, path select = 0, transport type = Mpeg2, channel type = Normal, source ID = 0x401e [2014-06-28 20:59:18,694] [Log ] [24 ] [DEBUG] - S-VCT: CDS reference = 158, program number = 0x102, MMS reference = 4 [2014-06-28 21:00:39,970] [Log ] [24 ] [DEBUG] - NTT: source name, source ID = 0x401e, name = AMC HD, application type = False Note the program number - 0x102 (hexadecimal notation) = 258. When we tune: [2014-06-28 21:03:53,902] [Log ] [4 ] [INFO ] - atsc:Tune:ATSC:tv:Cable AMC HD Freq:997250 ONID:16414 TSID:0 SID:258 PMT:0x0 FTA:False LCN:158 phys:158 maj:862 min:0 mod:Mod256Qam Again, note the program number (SID) matches what we found in the scan. Finally, the Ceton tuning log: Jan 6 08:23:47 ocur[21]: ocur: [0] Resolved channel 862 -> freq 639000, prog 459, modulation 16 ...and there is the problem - 459 does not match the 258 that we got in the scan, and so the tune attempt will fail with the PMT error. I can say with absolute confidence that we're retrieving and storing the information the CableCARD gives us correctly. I suspect the fact that TV Server's program number does not match the Ceton logs is due to a combination of the use of SDV (switched digital video) and Comcast not keeping the VCT (virtual channel table) for CableCARDs up to date. It's a case of garbage in garbage out. I honestly can't think of anything that we can do to solve or even workaround this problem in code. Without a correct program number from the CableCARD we simply can't tune properly. You can workaround this problem by manually correcting the program number for each of your non-working channels. I know it would be painful and I wish I could offer a better solution but at this point I've got nothing. In the meantime I can try to contact Ceton and ask if they have any ideas but don't hold out much hope. To that end it would be helpful to know your zip code (Ceton may know about issues with Comcast in your area). I would also suggest you raise a support ticket with Ceton. Please feel free to refer them to me if they have technical questions. Regards, mm [/QUOTE]
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