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Signal sometimes interrupted on this one channel
Added by M J almost 5 years ago
If I watch it live, sometimes the video just freezes for a few seconds, then comes back. If recording, it skips ahead several seconds (obviously from the same effect). It only happens on 1 channel. I've considered and eliminated these possibilities:
1. Weak signal: actually, this signal is the strongest one I receive. Even if I used rabbit ears it's hard not to get the signal and I use an outdoor antenna.
2. Required more throughput than my system can handle: that seems unlikely, because it is the only channel that is 720p. I often record from several 1080i channels and never have this problem.
3. Hardware: I've connected the tuner to my Linux computer and watched for a long time. Never had a problem.
- ATSC
- Services tab has it as 539.028MHz
- Real channel 25, virtual channel 4.1
- The attached screen caps for the Muxes tab and Services tab on the web interface.
The tuner is a Hauppauge WinTV-HVR 955Q. I'm running Kodi 18.4 on Raspbian 10 and Tvheadend 4.2.8.
Replies (2)
RE: Signal sometimes interrupted on this one channel - Added by M J almost 5 years ago
bump
Well here's something interesting: checked out the syslog from last night's 30 minute recording. This is what I got:
Feb 20 18:59:30 dospace tvheadend[795]: dvr: "Concession_12-2020-02-20-19:00" on "CBOT-DT" recorder starting Feb 20 18:59:30 dospace tvheadend[795]: dvr: About to set stop timer for "Concession_12-2020-02-20-19:00" on "CBOT-DT" at start 1582243200 and original stop 1582245000 and overall stop at 1582245000 Feb 20 18:59:30 dospace tvheadend[795]: mpegts: 539.028MHz in ATSC-T Network - tuning on LG Electronics LGDT3306A VSB/QAM Frontend #0 : ATSC-T #0 Feb 20 18:59:30 dospace tvheadend[795]: subscription: 0017: "DVR: Concession_12-2020-02-20-19:00" subscribing on channel "CBOT-DT", weight: 300, adapter: "LG Electronics LGDT3306A VSB/QAM Frontend #0 : ATSC-T #0", network: "ATSC-T Network", mux: "539.028MHz", service: "OTTAWA CBOT-DT", profile="pass" Feb 20 19:00:00 dospace tvheadend[795]: dvr: /home/pi/recordings/Concession_12-2020-02-20-19:00.ts from adapter: "LG Electronics LGDT3306A VSB/QAM Frontend #0 : ATSC-T #0", network: "ATSC-T Network", mux: "539.028MHz", provider: "<N/A>", service: "OTTAWA CBOT-DT" Feb 20 19:00:00 dospace tvheadend[795]: dvr: # type lang resolution aspect ratio sample rate channels Feb 20 19:00:00 dospace tvheadend[795]: dvr: 1 MPEG2VIDEO 1280x720 ? Feb 20 19:00:00 dospace tvheadend[795]: dvr: 2 AC3 eng ? ? Feb 20 19:00:00 dospace tvheadend[795]: dvr: 3 AC3 und ? ? Feb 20 19:02:38 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: MPEG2VIDEO @ #49 Continuity counter error (total 1) Feb 20 19:02:46 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #52 Continuity counter error (total 1) Feb 20 19:02:46 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #53 Continuity counter error (total 1) Feb 20 19:14:05 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: MPEG2VIDEO @ #49 Continuity counter error (total 3) Feb 20 19:14:05 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #52 Continuity counter error (total 2) Feb 20 19:14:05 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #53 Continuity counter error (total 2) Feb 20 19:14:49 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #52 Continuity counter error (total 3) Feb 20 19:14:49 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #53 Continuity counter error (total 3) Feb 20 19:17:02 dospace CRON[1201]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Feb 20 19:24:34 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: MPEG2VIDEO @ #49 Continuity counter error (total 4) Feb 20 19:24:34 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #52 Continuity counter error (total 4) Feb 20 19:24:34 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #53 Continuity counter error (total 4) Feb 20 19:27:21 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: MPEG2VIDEO @ #49 Continuity counter error (total 6) Feb 20 19:27:21 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #53 Continuity counter error (total 6) Feb 20 19:27:21 dospace tvheadend[795]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #52 Continuity counter error (total 6) Feb 20 19:30:00 dospace tvheadend[795]: subscription: 0017: "DVR: Concession_12-2020-02-20-19:00" unsubscribing from "CBOT-DT" Feb 20 19:30:00 dospace tvheadend[795]: dvr: "Concession_12-2020-02-20-19:00" on "CBOT-DT": End of program: Completed OK
And I think those errors coincide w/problems I experienced.
RE: Signal sometimes interrupted on this one channel - Added by M J over 4 years ago
So this time I tried turning debugging on and got:
Mar 7 14:14:10 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT Transport error indicator (total 1) Mar 7 14:14:10 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: MPEG2VIDEO @ #49 Continuity counter error (total 1) Mar 7 14:14:10 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: MPEG2VIDEO @ #49: Invalid start code 0d:98:83 Mar 7 14:14:10 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #53 Continuity counter error (total 1) Mar 7 14:14:10 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #53: Invalid start code 03:35:e7 Mar 7 14:14:10 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #52 Continuity counter error (total 1) Mar 7 14:15:55 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: MPEG2VIDEO @ #49 Continuity counter error (total 14) Mar 7 14:15:55 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #52 Continuity counter error (total 3) Mar 7 14:15:55 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #53 Continuity counter error (total 4) Mar 7 14:15:55 dospace tvheadend[764]: tsfix: transport stream MPEG2VIDEO, DTS discontinuity. DTS = 41487499, last = 41209721 Mar 7 14:15:56 dospace tvheadend[764]: tsfix: transport stream AC3, DTS discontinuity. DTS = 41448754, last = 41157874 Mar 7 14:15:56 dospace tvheadend[764]: tsfix: transport stream AC3, DTS discontinuity. DTS = 41448960, last = 41158080 Mar 7 14:16:32 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: MPEG2VIDEO @ #49 Continuity counter error (total 15) Mar 7 14:16:32 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #52 Continuity counter error (total 4) Mar 7 14:16:32 dospace tvheadend[764]: TS: ATSC-T Network/539.028MHz/OTTAWA CBOT-DT: AC3 @ #53 Continuity counter error (total 5) Mar 7 14:16:32 dospace tvheadend[764]: tsfix: transport stream MPEG2VIDEO, DTS discontinuity. DTS = 44787796, last = 43442452 Mar 7 14:16:32 dospace tvheadend[764]: tsfix: transport stream AC3, DTS discontinuity. DTS = 44743474, last = 43369714 Mar 7 14:16:32 dospace tvheadend[764]: tsfix: transport stream AC3, DTS discontinuity. DTS = 44743680, last = 43369920 Mar 7 14:16:52 dospace tvheadend[764]: subscription: 0016: "127.0.0.1 [ angus | Kodi Media Center ]" unsubscribing from "CBOT-DT", hostname="127.0.0.1", username="127.0.0.1", client="Kodi Media Center"
Does that say anything new?