Opened 12 years ago
Closed 12 years ago
#10781 closed Bug Report - General (Duplicate)
DVB TableID 0x82
Reported by: | Owned by: | danielk | |
---|---|---|---|
Priority: | minor | Milestone: | unknown |
Component: | MythTV - DVB | Version: | Master Head |
Severity: | medium | Keywords: | DVB tableID EIT |
Cc: | Ticket locked: | no |
Description
in mpegtables.h:
// DVB Conditional Access DVBCAbeg = 0x80, DVBCAend = 0x8f, // Dishnet Longterm EIT data DN_EITbego = 0x80, // always on pid 0x300 DN_EITendo = 0xfe, // always on pid 0x300
But in dvbtables.cpp
is_eit |= (TableID::SC_EITbego <= table_id && TableID::SC_EITendo >= table_id);
Well and here comes the problem: I have some channels where I receive CA data in table 0x80, but they are treated as EIT-data and additionally a CRC-value is calculated (and fails):
mpegtables.cpp
// Dishnet Longterm EIT data if (TableID::DN_EITbego <= TableID() && TableID() <= TableID::DN_EITendo) { has_crc = true; }
2012-05-28 17:24:24.256652 E PSIPTable: Failed CRC check 0x8dec147c != 0x8155bb9c for StreamID = 0x82 2012-05-28 17:24:24.256657 E PSIP table 0x82 is invalid 2012-05-28 17:24:24.256663 E PSIPTable: Failed CRC check 0x8dec147c != 0xe4dbb3d5 for StreamID = 0x83 2012-05-28 17:24:24.256665 E PSIP table 0x83 is invalid 2012-05-28 17:24:24.256671 I PESPacket: Failed CRC check 0x90484607 != 0xc94cb6d5 for StreamID = 0x82 2012-05-28 17:24:24.256673 E PSIP packet failed CRC check. pid(0x1000) type(0x82) 2012-05-28 17:24:24.259807 I PESPacket: Failed CRC check 0x90484607 != 0x3681d3b for StreamID = 0x83 2012-05-28 17:24:24.259814 E PSIP packet failed CRC check. pid(0x1002) type(0x83)
Maybe the failing CRC check is also a problem of my tv card (Philips TDA10023 DVB-C, no CA module connected), but in general mythtv should check more carefully if it is really an EIT table. I get some stuttering of playback everytime a CRC check fails (but I think the main reason is the EIT-thing). Output of "dvbsnoop -s pidscan" attached.
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dvbsnoop -s pidscan