Hello everyone,
I am using Tvheadend for several years already without any problems. I started with using it with DVB-T and later with DVB-S. Currently, I have terminated the sat contract and I wanted to return to DVB-T. During several years, most muxes around have been migrated from DVB-T to DVB-T2. My old USB dongle cannot work with that, so as I already had Digital Devices Cine S2, I additionally bought Cine C2T2.
I have added all DVB-T and DVB-T2 muxes, and apparrently there is some problem with DVB-T2 muxes. When I scan them initially (after adding) or just change Scan Status to PENDING, I noticed it shows Signal Strength in Status tab (sometimes shows SNR as well), but it does not detect channels and Scan Result is FAIL. I also noticed that when I change Delivery System to DVB-T and let it scan frequency (it fails ofc) and then immediately change it back to DVB-T2 it detects all channels. Unfortunately when I try to play channel I see "No input source available for subscription" in logs.
First of all I thought there is a problem with TV signal. I have connected my Sony TV and it shows Signal Strength around 90-100% and Signal Quality 100% all the time on each local mux. Then I thought that my DD Cine C2T2 tuner might be broken, but when I installed mumudvb as an alternative, I was able to record whole mux without any problem (even it has worse signal, as it is distributed from across the border). The test configuration file was:
card=4
freq=554
delivery_system=DVBT2
autoconfiguration=full
and it worked with ./mumudvb -s -v -d -c dvb.conf -t --dumpfile test.mp4:
Info: Main: Streaming. Freq 554000.000000
Info: Tune: Using DVB card "CXD2854 DVB-C/C2 DVB-T/T2 ISDB-T" tuner 0
Info: Tune: Tuning Terrestrial to 554000000 Hz, Bandwidth: 8000000
Info: Tune: Tuning With DVB-API version 5. delivery system : 16
Deb0: Tune: polling....
Info: Tune: FE_STATUS:
Info: Tune: Strength: 46
Info: Tune: SNR: 0
Deb0: Tune: polling....
Info: Tune: FE_STATUS:
Info: Tune: Strength: 47
Info: Tune: SNR: 0
Deb0: Tune: polling....
Info: Tune: FE_STATUS:
Info: Tune: FE_HAS_SIGNAL : found something above the noise level
Info: Tune: FE_HAS_CARRIER : found a DVB signal
Info: Tune: FE_HAS_VITERBI : FEC is stable
Info: Tune: FE_HAS_SYNC : found sync bytes
Info: Tune: FE_HAS_LOCK : everything's working...
Info: Tune: Strength: 47
Info: Tune: SNR: 215
Info: Tune: Event: Frequency: 554000000
Info: Tune: Bit error rate: 0
Info: Tune: Signal strength: 47
Info: Tune: SNR: 202
Info: Main: Card 4, tuner 0 tuned
Info: Main: The traffic will be shown every 10 seconds
(...)
Info: DVB: Bit error rate: 0 Signal strength: 47 SNR: 205 Uncorrected blocks: 0
Info: DVB: ts_discontinuities 0
Info: Main: Traffic : 2815.95 kb/s for channel "TV Barrandov"
Info: Main: Traffic : 2683.70 kb/s for channel "Nova Cinema"
Info: Main: Traffic : 2892.29 kb/s for channel "BARRANDOV KRIMI"
Info: Main: Traffic : 4482.51 kb/s for channel "KINO BARRANDOV"
Info: Main: Traffic : 2469.73 kb/s for channel "NOVA"
Info: Main: Traffic : 2141.80 kb/s for channel "Tv NOE"
Info: Main: Traffic : 5121.18 kb/s for channel "Seznam.cz TV"
Info: Main: Traffic : 0.00 kb/s for channel "Radio Dechovka"
Info: Main: Traffic : 0.00 kb/s for channel "Cesky Impuls"
Info: Main: Traffic : 0.00 kb/s for channel "Radio Impuls"
Info: Main: Traffic : 0.00 kb/s for channel "UKRAJINSKE RADIO"
Info: Main: Traffic : 4512.61 kb/s for channel "Sporty TV"
Info: Main: Traffic : 2919.17 kb/s for channel "A11"
Info: Main: Traffic : 3348.17 kb/s for channel "SPEKTRUM HOME"
Info: Main: Traffic : 3398.71 kb/s for channel "Warner TV"
Info: Main: Traffic : 0.00 kb/s for channel "Rock Zone 105,9"
Info: Main: Traffic : 2650.37 kb/s for channel "Hit TV"
Info: Main: Traffic : 1706.34 kb/s for channel "Test-1"
Info: Main: Traffic : 1706.34 kb/s for channel "Test-2"
Info: Main: Traffic : 3163.24 kb/s for channel "DVTV Extra"
Info: DVB: Bit error rate: 0 Signal strength: 47 SNR: 201 Uncorrected blocks: 0
Info: DVB: ts_discontinuities 0
Info: DVB: Bit error rate: 0 Signal strength: 47 SNR: 228 Uncorrected blocks: 0
Info: DVB: ts_discontinuities 0
Info: DVB: Bit error rate: 0 Signal strength: 47 SNR: 232 Uncorrected blocks: 0
Info: DVB: ts_discontinuities 0
(...)
Here I post also logs from Tvheadend:
2025-03-15 18:36:33.868 mpegts: 554MHz in DVB-T - tuning on CXD2854 DVB-C/C2 DVB-T/T2 ISDB-T #4 : DVB-T #0
2025-03-15 18:36:33.868 subscription: 00A1: "scan" subscribing to mux "554MHz", weight: 6, adapter: "CXD2854 DVB-C/C2 DVB-T/T2 ISDB-T #4 : DVB-T #0", network: "DVB-T", service: "Raw PID Subscription"
2025-03-15 18:36:38.868 mpegts: 554MHz in DVB-T - scan no data, failed
I guess then, that tuner is working properly. I was able to open recorded file with VLC and switch to any TV program. However I cannot get DVB-T2 muxes working with Tvheadend. Any ideas what might be wrong? What else can I check?
