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Bug #5767

closed

TVH PID filtering and Continuity Counter errors

Added by Zbyněk Šrubař over 5 years ago. Updated about 4 years ago.

Status:
Invalid
Priority:
Normal
Assignee:
-
Category:
DVB
Target version:
-
Start date:
2019-11-05
Due date:
% Done:

0%

Estimated time:
Found in version:
4.3-1850
Affected Versions:

Description

Recently public TV DVB-T2 mux in Czech Republic changed something and all users of X-box tuners on TVH started to see Continutity Counter errors. The mux most probably introduced new channels (programs), which are sharing the same video/sounds PIDs from other channels and only in specific times offers their own video/sound. Please note that other DVB-T2 muxes still play fine without any errors. The issue is reported only for X-box tuner.

X-box tuner doesn't provide PID filtering by HW. At least this option is not offered by the driver. Other DVB-T2 tuners usually have such possibility (I believe). So far this problem is reported only for X-box tuner and not for other DVB-T2 tuners, so I think this might be the difference, which is causing different behavior.

In case I stream the complete mux to Kodi/VLC, no error is happening.

2019-11-04 21:41:37.994 mpegts: 514MHz in DVB-T CZ - open PID fullmux subscription [0003/0xb5602e28]

In case I stream the channel, PID filtering is activated and CC errors start to appear.

2019-11-04 20:44:34.628 mpegts: 514MHz in DVB-T CZ - open PID 096A (2410) [8/0x36e0958]

Open PID in mpegts is not followed by linuxdvb open PID call as HW PID filtering is not supported. Hence it means that there could be a bug in TVheadend part where software PID filtering is implemented and special PMT setup is received.

I am attaching TVH trace (mpegts and linuxdvb enabled).

Files

Download all files
TVH_trace.txt (46.5 KB) TVH_trace.txt Zbyněk Šrubař, 2019-11-05 00:16
log.txt (3.18 KB) log.txt Petr Andrysek, 2019-11-08 18:17
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