DVB-S2 one mux - Continuity counter error

Suso

Hello
I have a problem with only one multiplex the others all work.
Other channels on other multiplexes also work in HD.
I tried rescan mutiplex, manual mutiplex setting does not work.
On setabox tv multiplex works.

OS
Debian 11.9

TvHeadend version
4.3-2228_gce429efe9

DVB-S2
PCTV Systems DVB-S2 Stick 461e

Satelit
Astra 23.5E

logs
mpegts: 11876H in Astra - tuning on Montage Technology M88DS3103 #0 : DVB-S #0 subscription: 000A: "HTTP" subscribing on channel "TV JOJ HD", weight: 100, adapter: "Montage Technology M88DS3103 #0 : DVB-S #0", network: "Astra", mux: "11876H", provider: "M7 Group", service: "TV JOJ HD", profile="pass", hostname="192.168.1.10", username="user", client="VLC/3.0.11 LibVLC/3.0.11" TS: Astra/11876H/TV JOJ HD: H264 @ #7141 Continuity counter error (total 1) TS: Astra/11876H/TV JOJ HD: MPEG2AUDIO @ #7142 Continuity counter error (total 1) TS: Astra/11876H/TV JOJ HD: MPEG2AUDIO @ #7143 Continuity counter error (total 1) tbl-base: pmt: 11876H in Astra: invalid checksum (len 127, errors 1) tbl-pass: pass-pmt: -: invalid checksum (len 127, errors 1) TS: Astra/11876H/TV JOJ HD: DVBSUB @ #7146 Continuity counter error (total 1) tbl-base: pat: 11876H in Astra: invalid checksum (len 76, errors 1) tbl-pass: pass-pat: -: invalid checksum (len 76, errors 1) TS: Astra/11876H/TV JOJ HD: H264 @ #7141 Continuity counter error (total 3153) TS: Astra/11876H/TV JOJ HD: MPEG2AUDIO @ #7143 Continuity counter error (total 106) TS: Astra/11876H/TV JOJ HD: MPEG2AUDIO @ #7142 Continuity counter error (total 113) TS: Astra/11876H/TV JOJ HD Transport error indicator (total 1) TS: Astra/11876H/TV JOJ HD: DVBSUB @ #7146 Continuity counter error (total 5)

ProfYaffle

I think it's simply that one of more packets were lost on the way. I've seen many of these in the past, and I don't think that they cause any issue in the stream (as it's basically a fire-hose of information anyway, so one lost packet is... well, just gone).

It can cause more problems if you're recording, IIRC, as the discontinuity in the file might kill it. What causes it, though, I can't say - hardware or driver, atmospherics?

Are you getting anything from this mux?

Suso

Traffic with multiplex has a data flow but displays an error and the screen is green or black.

Flole

There are transport errors which indicate a bad signal. Nothing in Tvheadend that can be done about that. You can also check with other software and should still see the issue.

davep

Just to check, are you able to receive muxes 11817V and 11914H? Those plus 11876H are providing a very high bitrate and maybe your system can't cope.

Suso

I tried adding both multiplex and it does the same problem on both.

PCTV Systems DVB-S2 Stick 461e has only USB 2.0

can I solve this problem ? example linux limits ?

davep

I also have a 461e but use Astra 28.2E which uses much lower data rates. They did once have a mux with over 60Mb/s for UHD tests and I had poor reception of that.
There is a utility at https://github.com/b-rad-NDi/eeprom-tinker which reduces the load on the CPU caused by very high data rates. I have tried it but it didn't make any difference on my system. Note the danger warnings!
What CPU are you using?

Suso

I have an Intel NUC 7PJYHN
Intel Pentium Silver J5005 Gemini Lake

https://www.intel.com/content/www/us/en/products/sku/128984/intel-pentium-silver-j5005-processor-4m-cache-up-to-2-80-ghz/specifications.html

I'll try to see the solution you sent

Suso

I found officially that you need to switch the mode, let's see if that helps
https://www.hauppauge.com/pages/support/isoc_to_bulk.html

from the factory I have isoc mode

dmesg | grep isoc
em28xx 1-2:1.0: DVB interface 0 found: isoc
em28xx 1-2:1.0: dvb set to isoc mode.