Getting ISDB-T Working on recent builds (in Argentina)

FaberfoX -

I used to have tvheadend working about two years ago, can't remember what version but I could dig a bit to find it. Now, I'm having a hard time getting it to work here in Argentina. I'm using a Dibcom-8000 USB ISDB-T tuner, it works on windows with progdvb and vlc and on linux with mumudvb and vlc.
I'm trying it on a Jessie VM, I've tried all the buildtypes and it always fails with a "scan no data, failed" on 4.x and Constant FEC on 3.4, and doesn't pick up any services. My hope is to get it working on a raspi 2, tried also on it the available builds on a few different distros with the same result.
Where I'm located, I have pretty good reception for all the muxes available (UHF22-27, 33-36) except 26 that is a bit hit or miss. The services available here are the ones on the left (Paquete de señales de distribución nacional) and the ones that show once you click the tiny region that's Ciudad de Buenos Aires (center of the map, far right, inside Buenos Aires province, the one that looks like a P)
http://www.tda.gob.ar/programacion/guia-seniales.html I can provide remote access to either the raspi, a dedicated PC I have around or a VM on my desktop (I have a crappier antenna on this one).
Would this help you guys? If so, please let me know what you want running and on which one and I'll set it up. I also have a Lantronix SpiderDuo IP KVM in case you want to use it.

mpmc

Are you entering the correct number of zeros for the frequencies?

E.g.

http://i.imgur.com/fSf6hGx.png?1

FaberfoX -

Yes, in Hz for 4.x and in KHz for 3.4. I've tried both 551000000 and 551142857 for mux 26. I'm only setting Bandwidth at 6MHz and leaving everything else at auto. On latest unstable, ar-Argentina is available as a network and it populates the muxes with the 142857. Attached screen is after an initial scan after completing the wizard on 4.1-1931

mpmc

Ah yes I forgot to mention, make sure you also enter Transmission mode and Constellation too. With my dibcoms (7000) scan fails on AUTO.

FaberfoX -

Any idea what values to use? There's no Transmission mode on mine, and tried most of the combinations with no luck.

Using scan with a single channel, this is what I get:

$cat freqs.conf

T 551142857 6MHz 3/4 AUTO AUTO AUTO AUTO NONE # canal 27

$scan freqs.conf -vvvvv > chans.conf 2> debug.out

$cat chans.conf

C5N HD:551142857:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE:273:274:23456 ONE TV HD:551142857:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE:289:290:23457 C5N Movil:551142857:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE:529:530:23480

$cat debug.out

scanning freqs.conf using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' initial transponder 551142857 2 3 9 6 2 4 0 >>> tune to: 551142857:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE >>> tuning status == 0x1f add_filter:1791: add filter pid 0x0000 start_filter:1731: start filter pid 0x0000 table_id 0x00 update_poll_fds:1711: poll fd 4 add_filter:1791: add filter pid 0x0011 start_filter:1731: start filter pid 0x0011 table_id 0x42 update_poll_fds:1711: poll fd 5 update_poll_fds:1711: poll fd 4 add_filter:1791: add filter pid 0x0010 start_filter:1731: start filter pid 0x0010 table_id 0x40 update_poll_fds:1711: poll fd 6 update_poll_fds:1711: poll fd 5 update_poll_fds:1711: poll fd 4 parse_section:1574: pid 0x00 tid 0x00 table_id_ext 0x02dd, 0/0 (version 2) PAT add_filter:1791: add filter pid 0x0101 start_filter:1731: start filter pid 0x0101 table_id 0x02 update_poll_fds:1711: poll fd 7 update_poll_fds:1711: poll fd 6 update_poll_fds:1711: poll fd 5 update_poll_fds:1711: poll fd 4 add_filter:1791: add filter pid 0x0102 start_filter:1731: start filter pid 0x0102 table_id 0x02 update_poll_fds:1711: poll fd 8 update_poll_fds:1711: poll fd 7 update_poll_fds:1711: poll fd 6 update_poll_fds:1711: poll fd 5 update_poll_fds:1711: poll fd 4 add_filter:1791: add filter pid 0x1fc8 start_filter:1731: start filter pid 0x1fc8 table_id 0x02 update_poll_fds:1711: poll fd 9 update_poll_fds:1711: poll fd 8 update_poll_fds:1711: poll fd 7 update_poll_fds:1711: poll fd 6 update_poll_fds:1711: poll fd 5 update_poll_fds:1711: poll fd 4 read_filters:1831: filter done pid 0x0000 remove_filter:1799: remove filter pid 0x0000 stop_filter:1777: stop filter pid 0x0000 update_poll_fds:1711: poll fd 9 update_poll_fds:1711: poll fd 8 update_poll_fds:1711: poll fd 7 update_poll_fds:1711: poll fd 6 update_poll_fds:1711: poll fd 5 parse_section:1574: pid 0x1fc8 tid 0x02 table_id_ext 0x5bb8, 0/0 (version 2) PMT 0x1fc8 for service 0x5bb8 VIDEO : PID 0x0211 AUDIO : PID 0x0212 parse_descriptors:1093: skip descriptor 0x52 OTHER : PID 0x0216 TYPE 0x06 parse_pmt:1235: 0x0000 0x5bb8: (null) -- (null), pmt_pid 0x1fc8, vpid 0x0211, apid 0x0212 () read_filters:1831: filter done pid 0x1fc8 remove_filter:1799: remove filter pid 0x1fc8 stop_filter:1777: stop filter pid 0x1fc8 update_poll_fds:1711: poll fd 8 update_poll_fds:1711: poll fd 7 update_poll_fds:1711: poll fd 6 update_poll_fds:1711: poll fd 5 parse_section:1574: pid 0x101 tid 0x02 table_id_ext 0x5ba0, 0/0 (version 2) PMT 0x0101 for service 0x5ba0 VIDEO : PID 0x0111 AUDIO : PID 0x0112 parse_descriptors:1093: skip descriptor 0x52 parse_descriptors:1093: skip descriptor 0x7c OTHER : PID 0x0116 TYPE 0x06 parse_pmt:1235: 0x0000 0x5ba0: (null) -- (null), pmt_pid 0x0101, vpid 0x0111, apid 0x0112 () read_filters:1831: filter done pid 0x0101 remove_filter:1799: remove filter pid 0x0101 stop_filter:1777: stop filter pid 0x0101 update_poll_fds:1711: poll fd 8 update_poll_fds:1711: poll fd 6 update_poll_fds:1711: poll fd 5 parse_section:1574: pid 0x102 tid 0x02 table_id_ext 0x5ba1, 0/0 (version 2) PMT 0x0102 for service 0x5ba1 VIDEO : PID 0x0121 AUDIO : PID 0x0122 parse_descriptors:1093: skip descriptor 0x52 parse_descriptors:1093: skip descriptor 0x7c OTHER : PID 0x0126 TYPE 0x06 parse_pmt:1235: 0x0000 0x5ba1: (null) -- (null), pmt_pid 0x0102, vpid 0x0121, apid 0x0122 () read_filters:1831: filter done pid 0x0102 remove_filter:1799: remove filter pid 0x0102 stop_filter:1777: stop filter pid 0x0102 update_poll_fds:1711: poll fd 6 update_poll_fds:1711: poll fd 5 parse_section:1574: pid 0x10 tid 0x40 table_id_ext 0x02dd, 0/0 (version 2) NIT (actual TS) Network Name 'C5N' parse_descriptors:1093: skip descriptor 0xfe parse_nit:1271: transport_stream_id 0x02dd parse_descriptors:1093: skip descriptor 0x41 parse_descriptors:1093: skip descriptor 0xfa parse_descriptors:1093: skip descriptor 0xfb parse_descriptors:1093: skip descriptor 0xcd read_filters:1831: filter done pid 0x0010 remove_filter:1799: remove filter pid 0x0010 stop_filter:1777: stop filter pid 0x0010 update_poll_fds:1711: poll fd 5 parse_section:1574: pid 0x11 tid 0x42 table_id_ext 0x02dd, 0/0 (version 2) SDT (actual TS) 0x0000 0x5ba0: pmt_pid 0x0101 (null) -- C5N HD (???) 0x0000 0x5ba1: pmt_pid 0x0102 (null) -- ONE TV HD (???) 0x0000 0x5bb8: pmt_pid 0x1fc8 (null) -- C5N Movil (???) read_filters:1831: filter done pid 0x0011 remove_filter:1799: remove filter pid 0x0011 stop_filter:1777: stop filter pid 0x0011 dumping lists (3 services) Done.

http://i.imgur.com/pV9lu3o.png

mpmc

Try setting Constellation to QAM64 (and if that doesn't work try the other options). Leave the FEC and Guard Int as default, btw QAM/AUTO is still auto :p

Cristian M

Same issue here. If I set the network type ISDB-T, I can´t attach this to the adapter....and if I add DVB-T type and add manually the muxes or add Taiwan Muxes, this don´t find anything....

And the adapters works fine, this is the result from scan:

>>> tune to: 521142857:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE
0x0000 0xe720: pmt_pid 0x1000 Arsat -- ENCUENTRO (running, scrambled)
0x0000 0xe722: pmt_pid 0x1010 Arsat -- TATETI (running, scrambled)
0x0000 0xe723: pmt_pid 0x1020 Arsat -- INCAA TV (running, scrambled)
0x0000 0xe724: pmt_pid 0x1030 Arsat -- TEC TV (running, scrambled)
0x0000 0xe738: pmt_pid 0x1fc8 Arsat -- ENCUENTRO PORTABLE (running, scrambled)
0x0000 0xe721: pmt_pid 0x1050 Arsat -- PAKA PAKA (running)
Network Name 'Canal 22'
>>> tune to: 527142857:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE
Network Name 'Canal 23'
0x0000 0xe740: pmt_pid 0x1000 Arsat -- TV PUBLICA HD (running, scrambled)
0x0000 0xe741: pmt_pid 0x1010 Arsat -- CONSTRUIR TV (running, scrambled)
0x0000 0xe758: pmt_pid 0x1fc8 Arsat -- TV PUBLICA PORTABLE (running, scrambled)
>>> tune to: 533142857:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE
Network Name 'Canal 24'
0x0000 0xe760: pmt_pid 0x1000 Arsat -- DEPORTV HD (running, scrambled)
0x0000 0xe761: pmt_pid 0x1010 Arsat -- VIVRA (running, scrambled)
0x0000 0xe762: pmt_pid 0x1020 Arsat -- ARPEGGIO (running, scrambled)
0x0000 0xe763: pmt_pid 0x1030 Arsat -- VIAJAR (running, scrambled)
0x0000 0xe778: pmt_pid 0x1fc8 Arsat -- DEPORTV PORTABLE (running, scrambled)
>>> tune to: 539142857:INVERSION_AUTO:BANDWIDTH_6_MHZ:FEC_3_4:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_NONE
Network Name 'Canal 25'
0x0000 0xe780: pmt_pid 0x1000 Arsat -- CN23 (running, scrambled)
0x0000 0xe781: pmt_pid 0x1010 Arsat -- C5N (running, scrambled)
0x0000 0xe782: pmt_pid 0x1020 Arsat -- TELESUR (running, scrambled)
0x0000 0xe783: pmt_pid 0x1030 Arsat -- 360 TV (running, scrambled)
0x0000 0xe784: pmt_pid 0x1040 Arsat -- RT (running, scrambled)

0x0000 0xe798: pmt_pid 0x1fc8 Arsat -- CN23 PORTABLE (running, scrambled)

But with tvheadend don´t find anything

2016-05-06 18:25:26.573 [ INFO] mpegts: 521.142MHz in TDA - tuning on DiBcom 8000 ISDB-T : DVB-T #0
2016-05-06 18:25:26.573 [ INFO] subscription: 0010: "scan" subscribing to mux "521.142MHz", weight: 6, adapter: "DiBcom 8000 ISDB-T : DVB-T #0", network: "TDA", service: "Raw PID Subscription"
2016-05-06 18:25:36.382 [ INFO] mpegts: 521.142MHz in TDA - scan no data, failed
2016-05-06 18:25:36.382 [ INFO] subscription: 0010: "scan" unsubscribing
2016-05-06 18:26:04.259 [ INFO] mpegts: 521.142MHz in TDA - tuning on DiBcom 8000 ISDB-T : DVB-T #0
2016-05-06 18:26:04.260 [ INFO] subscription: 0011: "scan" subscribing to mux "521.142MHz", weight: 6, adapter: "DiBcom 8000 ISDB-T : DVB-T #0", network: "TDA", service: "Raw PID Subscription"
2016-05-06 18:26:14.071 [ INFO] mpegts: 521.142MHz in TDA - scan no data, failed
2016-05-06 18:26:14.071 [ INFO] subscription: 0011: "scan" unsubscribing
2016-05-06 18:29:47.753 [ INFO] mpegts: 521.142MHz in TDA - tuning on DiBcom 8000 ISDB-T : DVB-T #0
2016-05-06 18:29:47.769 [ INFO] subscription: 0012: "scan" subscribing to mux "521.142MHz", weight: 6, adapter: "DiBcom 8000 ISDB-T : DVB-T #0", network: "TDA", service: "Raw PID Subscription"
2016-05-06 18:29:57.579 [ INFO] mpegts: 521.142MHz in TDA - scan no data, failed
2016-05-06 18:29:57.579 [ INFO] subscription: 0012: "scan" unsubscribing
2016-05-06 18:31:28.502 [ INFO] mpegts: 521.142MHz in TDA - tuning on DiBcom 8000 ISDB-T : DVB-T #0
2016-05-06 18:31:28.502 [ INFO] subscription: 0013: "scan" subscribing to mux "521.142MHz", weight: 6, adapter: "DiBcom 8000 ISDB-T : DVB-T #0", network: "TDA", service: "Raw PID Subscription"
2016-05-06 18:31:38.310 [ INFO] mpegts: 521.142MHz in TDA - scan no data, failed
2016-05-06 18:31:38.310 [ INFO] subscription: 0013: "scan" unsubscribing
2016-05-06 18:32:28.414 [ INFO] mpegts: 521.142MHz in TDA - tuning on DiBcom 8000 ISDB-T : DVB-T #0
2016-05-06 18:32:28.414 [ INFO] subscription: 0014: "scan" subscribing to mux "521.142MHz", weight: 6, adapter: "DiBcom 8000 ISDB-T : DVB-T #0", network: "TDA", service: "Raw PID Subscription"
2016-05-06 18:32:38.247 [ INFO] mpegts: 521.142MHz in TDA - scan no data, failed
2016-05-06 18:32:38.247 [ INFO] subscription: 0014: "scan" unsubscribing
2016-05-06 18:32:57.793 [ INFO] mpegts: 521.142MHz in TDA - tuning on DiBcom 8000 ISDB-T : DVB-T #0
2016-05-06 18:32:57.794 [ INFO] subscription: 0015: "scan" subscribing to mux "521.142MHz", weight: 6, adapter: "DiBcom 8000 ISDB-T : DVB-T #0", network: "TDA", service: "Raw PID Subscription"
2016-05-06 18:33:07.603 [ INFO] mpegts: 521.142MHz in TDA - scan no data, failed
2016-05-06 18:33:07.603 [ INFO] subscription: 0015: "scan" unsubscribing
2016-05-06 18:33:10.389 [ INFO] mpegts: 521.142MHz in TDA - tuning on DiBcom 8000 ISDB-T : DVB-T #0
2016-05-06 18:33:10.389 [ INFO] subscription: 0016: "scan" subscribing to mux "521.142MHz", weight: 6, adapter: "DiBcom 8000 ISDB-T : DVB-T #0", network: "TDA", service: "Raw PID Subscription"
2016-05-06 18:33:20.199 [ INFO] mpegts: 521.142MHz in TDA - scan no data, failed
2016-05-06 18:33:20.199 [ INFO] subscription: 0016: "scan" unsubscribing
2016-05-06 18:33:49.591 [ INFO] mpegts: 521.142MHz in TDA - tuning on DiBcom 8000 ISDB-T : DVB-T #0
2016-05-06 18:33:49.592 [ INFO] subscription: 0017: "scan" subscribing to mux "521.142MHz", weight: 6, adapter: "DiBcom 8000 ISDB-T : DVB-T #0", network: "TDA", service: "Raw PID Subscription"
2016-05-06 18:33:59.397 [ INFO] mpegts: 521.142MHz in TDA - scan no data, failed
2016-05-06 18:33:59.397 [ INFO] subscription: 0017: "scan" unsubscribing
2016-05-06 18:35:18.174 [ INFO] mpegts: 521.142MHz in TDA - tuning on DiBcom 8000 ISDB-T : DVB-T #0
2016-05-06 18:35:18.174 [ INFO] subscription: 0018: "scan" subscribing to mux "521.142MHz", weight: 6, adapter: "DiBcom 8000 ISDB-T : DVB-T #0", network: "TDA", service: "Raw PID Subscription"
2016-05-06 18:35:27.983 [ INFO] mpegts: 521.142MHz in TDA - scan no data, failed
2016-05-06 18:35:27.983 [ INFO] subscription: 0018: "scan" unsubscribing
2016-05-06 18:35:53.695 [ INFO] mpegts: 527.142MHz in TDA - tuning on DiBcom 8000 ISDB-T : DVB-T #0
2016-05-06 18:35:53.695 [ INFO] subscription: 0019: "scan" subscribing to mux "527.142MHz", weight: 6, adapter: "DiBcom 8000 ISDB-T : DVB-T #0", network: "TDA", service: "Raw PID Subscription"
2016-05-06 18:36:03.564 [ INFO] mpegts: 527.142MHz in TDA - scan no data, failed
2016-05-06 18:36:03.564 [ INFO] subscription: 0019: "scan" unsubscribing

Jaroslav Kysela

You're saying that it works in VLC. Could you show me parameters for VLC? Also, could you try to force ISDB-T mode in VLC?

It seems that you're using the old DVB-T parameters/LinuxDVB API for scan (and probably VLC). The newer LinuxDVB API has complete support for ISDB-T and TVH tries to use it.

Cristian M

I use scan from linuxtv-dvb-apps to scan channels and find the channels.

When try to setup a network ISDB-T I can´t attach this to the adapter, this only acept DVB-T networks.....So I try to use the muxes with DVB-T with the freqs that have channels, but this doesn´t work.

Jaroslav Kysela

@Cristian M: I asked the original reporter. Your case is different.

Jaroslav Kysela

For all: Try to set ALL parameters (check your broadcaster). Don't keep some values to AUTO - it might not work.

Cristian M

When I set DVB-T network and add the muxes, I try to set parameters manually with the same result.

Jaroslav Kysela

@Cristian M: Provide a screenshot. Also, if VLC works, show me the URL / configuration.

FaberfoX -

I'll try it later today, tried to get a build working for my raspi (on ubuntu 16.04) but besides it taking a long time to build, the adapter gets detected but I couldn't get it to scan. I'll setup the extra pc I mentioned just for this, and my offer to let someone remote into it still stands. What would be best for testing, ubuntu 16.04 or debian 8? My guess is ubuntu will have a newer kernel.

Cristian M

Yes, this is an example. I try to setup diferent values and AUTO, without success. Remember, the adapter can´t accept ISDB-T networks....TVH can´t allow select this type of network...

Jaroslav Kysela

@Cristian M: The driver for your hw exports it to the user space as a DVB-T device. TVH cannot do much about it.

For all:

It seems that there's a little difference between scan / vlc and tvh, or just the provided mux parameters are not accepted by the driver.

TVH can print all linuxdvb ioctl using '--trace linuxdvb' - https://tvheadend.org/projects/tvheadend/wiki/Traces . But if it's one driver issue, I don't think that it will help and I know what's being sent already.

So we need to determine what 'scan' or 'vlc' does. I had a quick look to http://linuxtv.org/hg/dvb-apps/file/3d43b280298c/util/scan/scan.c and it seems that the old DVBv3 API is used to set the tuning parameters.

Latest VLC should use only the DVBv5 API. Could you give me some debug logs using the linuxdvb device directly from VLC?

Cristian M

Now with new kernel, in Centos 7, with tvheadend 3.9 and DVB-T work with too many count errors.

Into Build: 4.1-2004~g02ac9c9 as ISDB-T doesn´t work, all scan result "scan no data, failed"...
<<

Cristian M

When a Mux is set as ISDB-T I can´t set TRANSMISSION_MODE, ISDBT_LAYER_ENABLED, ISDBT_PARTIAL_RECEPTION, ISDBT_SOUND_BROADCASTING, ISDBT_SB_SUBCHANNEL_ID, ISDBT_SB_SEGMENT_IDX and ISDBT_SB_SEGMENT_COUNT.

When I set all the possible values into TVH, this fail to search, but when try to use directly de DVB API works..

Jaroslav Kysela

@Cristian M: From which app is above output ?

Cristian M

dvbv5-scan

channels file have:

[CHANNEL]
DELIVERY_SYSTEM = ISDBT
FREQUENCY = 521142857
BANDWIDTH_HZ = 6000000
INVERSION = OFF
GUARD_INTERVAL = 1/4
TRANSMISSION_MODE = 8K
ISDBT_LAYER_ENABLED = 7
ISDBT_PARTIAL_RECEPTION = 1
ISDBT_SOUND_BROADCASTING = 0
ISDBT_SB_SUBCHANNEL_ID = 0
ISDBT_SB_SEGMENT_IDX = 0
ISDBT_SB_SEGMENT_COUNT = 0
ISDBT_LAYERA_FEC = 2/3
ISDBT_LAYERA_MODULATION = QPSK
ISDBT_LAYERA_SEGMENT_COUNT = 1
ISDBT_LAYERA_TIME_INTERLEAVING = 3
ISDBT_LAYERB_FEC = 3/4
ISDBT_LAYERB_MODULATION = QAM/64
ISDBT_LAYERB_SEGMENT_COUNT = 12
ISDBT_LAYERB_TIME_INTERLEAVING = 2
ISDBT_LAYERC_FEC = 1/2
ISDBT_LAYERC_MODULATION = QAM/64
ISDBT_LAYERC_SEGMENT_COUNT = 0

ISDBT_LAYERC_TIME_INTERLEAVING = 0