IRCloggy #hts 2014-06-29

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2014-06-29

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sIRwa2 hi hello, Q: what is the main bottleneck in the speed of changing channals in anysee hardware > tvheadend > tvheadend client > xbmcbuntu?09:02
BtbN your tuner.09:03
Nothing else adds any delay09:03
linuxstb sIRwa2: How long is a channel change taking for you?09:09
sIRwa2 its from a minimum of 4 seconds up to 6 on some HD channels09:12
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linuxstb sIRwa2: Are these scrambled channels? Anything in the chain can potentially add delay, I don't know what other xbmc users normally experience (I don't use xbmc).09:25
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sIRwa2 these are free to air channels. i havent started investigating in depth, i was more wondering in general. because dedicated equip is more up to a second or 2 max.09:27
linuxstb sIRwa2: I don't think tvheadend causing very much of a delay - the two factors will be your hardware and then any buffering/decoder delay in your client (xbmc). I seem to remember reading in this channel that there are options in xbmc (in the advancedsettings.xml) to minimise its buffering)09:32
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linuxstb sIRwa2: Maybe this - http://pastebin.com/mpZTGnYt09:35
sIRwa2 oke. that sounds like a good place to start, i once heard that hardware (professional) is often a couple of frames..09:35
linuxstb For channels on the same mux, that's possible, but I would be impressed if any tuners can tune to a new mux that fast.09:36
Although decoders will need to wait for the next iframe to start decoding, which is typically around 0.5s to 0.6s09:37
BtbN xbmc tuning is without any noticable delay here09:39
even on encrypted channels09:40
sIRwa2 what hardware are you using BtbN09:44
BtbN some dvb-c tuner09:45
sIRwa2 i think it were Ericsson hardware linuxstb, but i guess your right in the iframe.. still 0.6 seconds is still a couple of frames to me ;)09:46
linuxstb Which versions of xbmc and the tvh pvr addon are you both using?09:46
BtbN i'd considder everything below 1 second perfect09:46
tvh is master from befor a few days09:47
and latest master pvr.hts09:47
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sIRwa2 xbmc 14.0 alpha (same delay as 13 stable) tvh backend 3.4.27 tvh client 1.9.2509:49
linuxstb sIRwa2: Do you see any difference when changing channels on the same mux, compared to channels on different muxes?09:50
sIRwa2 hm..09:51
same mux = 3 sec otherwise 6!09:56
linuxstb You could try updating to the current development version of tvh - I can't remember if anything has been improved there, but your version is quite old now. But that would seem to indicate a slow tuner...09:57
sIRwa2 is the latest marked as stable?09:59
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sIRwa2 ill go and try to update that and tweak the advanced xml setting next weekend.. ill report back if i get some good results10:00
tnx for the input linuxstb and BtbN10:01
linuxstb sIRwa2: No, but it's working stable for me ;)10:03
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_KRA is there any way in tvh to link up a network/muxes to a specific code word client ?10:50
BtbN Shouldn't be neccesary, it only uses the ones with a matching caid10:52
if there are multiple caids, you can configure it per service10:52
highzeth _KRA if both sources are CD, then you have no issues, all is as it should be10:54
_KRA btvn, highzeth. I have 2 supscription card, both from same provider, same CAID and some of the channels have same ID, the result is EMM are written to wrong card, I'm a little worried10:55
highzeth _KRA: as I said, don't be10:56
_KRA problem with using service in oscam is that some channels have same ID on both cards10:56
BtbN as long as all EMMs are written to all cards, i don't see a problem10:57
adamsutton mpmc: ping10:57
mpmc: got that coredump to hand?10:57
_KRA but they subscribe to different channels10:57
some are the same, but not all10:57
I have a dvb-c subscription and a dvb-s, the dvb-s have more channels on it.10:58
linuxstb adamsutton: Which -T/T2 transmitter do you receive?11:00
adamsutton linuxstb: sandy heath I think11:01
linuxstb Ah, so you probably have the COM8 Ultra-HD tests...11:02
adamsutton erm, well, if you say so :p11:02
linuxstb (I think I read that Sandy Heath had them...)11:02
highzeth _KRA: Let me try it this way, seeing as you wont listen to english, så lenge du har CanalDigital på begge kilder, vil begge kort gi deg gyldige koder, de vil også kunne oppdateres fra begge kilder. Det er kun de andre kanalene(ikke CD) på -C som må oppdateres via -C.11:02
linuxstb adamsutton: Time to add HEVC video support to tvh ;)11:03
adamsutton linuxstb: what's that?11:03
ah ok11:04
linuxstb H26511:04
adamsutton yeah, just reading11:04
linuxstb It's OK, I knew as much as you 24 hours ago ;)11:04
_KRA highzeth, pm ?11:04
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highzeth _KRA: if you feel its needed11:05
_KRA highzeth: it would be very kind :)11:06
BtbN h265 can still wait a few years11:07
linuxstb adamsutton: I looked at the PMT, and video is being identified as stream type 0x24 (36). It's 0x1b (27) for H254.11:07
BtbN it's barely possible to decode it with less than 4 cores11:07
adamsutton BtbN: but isn't this what we do :p11:07
find test channels and see what's on them, just because :p11:08
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linuxstb BtbN: It would be nice to at least record things, even if they can't be played. I did that for a while when H264 first launched.11:09
BtbN The problem with h265 is, that processing power doesn't increase at the same rate anymore11:10
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adamsutton linuxstb: ironically, the guy who sent me the microserver just tweeted me asking about H265 ;)11:16
and I've just seen this link on his feed http://t.co/0tvUbOwELG11:16
not transmitting on a tower I can receive I don't think11:17
linuxstb No, I must have mis-remembered.11:19
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linuxstb I tried to grab a muxdump with dvbstream last night, but it kept stopping after about 100-200MB. I'll re-install tvh on my machine with the -T2 tuners, and try a mux dump from there.11:20
adamsutton there could be other test transmissions on other transmitters I guess11:20
linuxstb (I'm on Crystal Palace)11:20
adamsutton ah, ok, cool11:20
linuxstb wonders if bbc redux is archiving this mux ;)11:21
adamsutton linuxstb: might have to get some reciprocal access ;)11:22
linuxstb: can you ship a short mux sample onto my server if you manage to grab one?11:23
linuxstb I'll do that now.11:23
adamsutton ta11:23
mpmc adamsutton: Yes I do have the coredump :p11:24
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adamsutton can't do anything atm, but might need to look at it at some point, can you keep it and the binary that you were running11:25
ta11:25
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linuxstb adamsutton: ~dave/com8test.ts - about 160MB from last night (during the live football).11:26
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mpmc Odd, it would appear that Tvheadend won't scan new mux on clean config, the only way to get it to scan is to restart tvh!12:20
linuxstb mpmc: What do you mean by "on clean config"? Adding a new mux works fine for me.12:22
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mpmc linuxstb: By clean I mean from scratch.12:22
linuxstb mpmc: You mean adding the first mux after completely wiping the config?12:25
mpmc Yes.12:25
And my core dumps have gone missing!12:26
Aha, it's crashed while in GDB.12:26
linuxstb: the mux scheduler cron is standard cron input right? (* * * * *, etc)?12:29
And.. it's crashed on my other server too.12:30
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linuxstb mpmc: Yes, it is. I tried the mux scheduler once, and it crashed tvh...12:40
(haven't tried since...)12:41
I think it was the first time it kicked in when a recording was happening.12:41
mpmc Nothing was 'active' when it crashes here.12:41
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mpmc adamsutton: config, core dump and binary.. http://5.231.53.206/dump.tar13:08
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steveneal Hi - @adamsutton you here?13:52
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ckarrie hi all14:54
why do I get this error: 2014-06-29 16:51:28.058 [ ALERT] settings: Unable to create dir "/home/christian/.hts": Keine Berechtigung (=No access)14:54
I run tvh with user christian14:55
and .hts already exists14:55
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linuxstb ckarrie: Which user owns .hts there? And are you sure tvh is running as the user christian?15:12
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ckarrie linuxstb: yes I'm running tvh via screen as user christian16:21
ls -la .hts/ gives me drwx------ 11 christian christian 4096 Jun 19 09:05 tvheadend16:23
(from user home)16:23
Another Issue: I don't get my channel name displayed in my autorecords (only channel uuid), see both scrennshots here: http://imgur.com/zlLs1RB,6mRaequ16:34
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ckarrie linuxstb: see my answer here http://goo.gl/ut1Dhc17:11
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ProfYaffle ckarrie: I've fixed the channel ID/channel name issue in PR40817:36
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ProfYaffle ckarrie: on your directory permission, what does ps -eaf | grep tvheadend show, just to check the process owner17:38
ckarrie: and similarly ls -la from /home/christian (i.e. what are the permissions on /home/christian/.hts, not the 700 you're showing on /home/christian/.hts/tvheadend17:39
ckarrie ProfYaffle: first row: 1000 3694 3807 11 14:07 pts/2 00:39:42 ./build.linux/tvheadend17:39
ProfYaffle: same as .hts: drwx------ 111 christian christian 40960 Jun 24 11:40 christian17:40
ProfYaffle looks like tvheadend is running as UID 100017:40
ckarrie yeah, that is the main user (me) on ubuntu17:41
aka "christian"17:41
ProfYaffle MMm, should be UID 1000, GID 1000... but why isn't the process listing as that. When logged in as christian, does the id command confirm you're UID 1000?17:42
ckarrie uid=1000(christian) gid=1000(christian) Gruppen=1000(christian),4(adm),...17:43
ProfYaffle Odd, that's entirely... what you'd expect17:43
You could chmod the .hts directory to 777 as a test, see what files tvheadend creates in it17:44
ckarrie i don't know if its a problem with screen17:44
tvh works nice and can write files into .hts17:45
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ProfYaffle and they're owned by christian/christian? If so, I'd say you don't have a problem, so just look away when that message appears :-)17:46
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ckarrie okay :-P17:52
linuxstb ckarrie: If you type "ps -ef | grep tvh" does that confirm tvh is running as user christian?17:59
Ah you answered that...18:00
ckarrie yes it does18:00
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ckarrie Another question, is there a way to ignore the internal channel number when mapping new channels? it's very annoying that french channels always appears on top (i.e. TF1 = Channel number 1)18:07
Another improvement regarding to channel mapping: creating tags based on audio language would be cool18:08
linuxstb ckarrie: I don't think there's a way to avoid those channel numbers appearing. But just change them - they would have all been zero anyway, so would have needed changing.18:12
ckarrie no, they have internal numbers and they "break up" my channel list18:13
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DereC astra19 and hotbird13 there is a lots of channels with "Local Channel Number"18:31
ckarrie DereC: yeah :-/18:32
would be nice to skip these channel numbers and set to i.e. 0 (zero)18:34
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linuxstb ckarrie: If you're compiling tvh yourself, it's probably pretty simple to disable local channel numbers.18:52
(I can tell you where if you want to, but as far as I can tell, there's no setting for it)18:54
ckarrie linuxstb: oh cool, yeah maybe later18:56
linuxstb ckarrie: For the record, edit src/input/mpegts/dvb_psi.c and delete (or comment-out) lines lines 821 to 824 inclusive (starting "case DVB_DESC_LOCAL_CHAN" and ending "break;")18:57
ckarrie linuxstb: okay thank you, I will give it a try18:58
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c0mm0n ckarrie : wtf have u been :D All my teams lose when u not here :D19:11
linuxstb Anyone (perexg, adamsutton) know how tvh detects duplicate -T muxes? I have one mux listed twice - I added it manually (with everything AUTO apart from the frequency), and then tvh added it again, with all the parameters filled in. Frequency is identical afaics.19:39
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perexg linuxstb: it looks like a bug.. if you are on the recent version, please, give me the 'mpegts' trace...19:51
linuxstb perexg: Problem seems to be in dvb_network_get_symbol_rate - would this be trying to compare "AUTO" with "8MHz" ?19:51
Everything else seems the same - same onid, tsid.19:52
Exactly the same freq (490MHz)19:52
perexg: I'm not really sure why there is a need to check anything apart from frequency for -C/-T ?19:54
linuxstb guesses there probably is a reason though...19:55
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ckarrie c0mm0n: lol20:03
i'm back ;-)20:04
perexg linuxstb: yes, the "auto/none" values handling seems missing for the DVB-T... in some cases is better to create two muxes (like when the provider offers bad mux tuning data - it may create ping-pong effects for the updating of config)...20:05
linuxstb perexg: Why check symbolrate/bandwidth at all though? I see you added that recently.20:09
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perexg linuxstb: some nit tables have wrong parameters.. especially for DVB-S, if we update to these.. the mux cannot be tuned.. this is the reason to have two muxes with almost identical parameters, but one is working (tunable) and the second does not (user may disable the non-working one)..20:16
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linuxstb perexg: OK, I can understand that. But there doesn't seem to be Auto handling for any DVB type in that check? And DVB-T bandwidth isn't symbol rate.20:26
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mpmc dickon_: What be wrong?20:28
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mpmc Ah, right, I didn't get booted here, my other connection did though.20:31
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perexg if someone is interested - epggrab improvements are in PR#430 - https://github.com/tvheadend/tvheadend/pull/430 ; comments are welcome20:38
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bow probably shouldn't be adding muxes based ony on nit data20:41
+l20:42
linuxstb perexg: How do you define "muxes without any epg information" ?20:42
bow at least not showing those to the user until they've been successfully tuned20:42
amet perexg: just fyi, latest master is unusable for me even with clean config. I wonder if anyone else had any luck with the issues. someone else had simmilar problems20:43
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perexg sorry for the wrong description - I fixed it right now - "do not tune to muxes with unwanted epg information (no channels assigned)" ...20:46
linuxstb amet: What are the problems? I'm using latest master, but mainly with FTA at the moment.20:46
perexg amet: I would like to fix it, but without any log it's difficult.. I only know, that you have a problem :-)20:46
linuxstb perexg: What about muxes dedicated to EPG data?20:46
amet perexg: andyb had the same issue, not sure how to narrow it down20:47
linuxstb: webui is dead for few minutes, fails to find most muxes, and once it does it takes up to 15 seconds for playback to start20:49
I dont think its the config issue, le me know what debug options you need and I’ll try20:50
perexg linuxstb: it should work.. for each mux there is a list of services with EPG (which is not same as streamed services)..20:50
ament: configuration / debugging / ... set the debug log path (filename) where you have some storate space, enter debug subsystems '+all' and trace subsystems '+all' .. do the "bad things" and post the generated log file somewhere..20:53
sorry for the typo, ament = amet20:54
ament: also enable 'Debug trace'..20:54
linuxstb perexg: OK. When is that list of services in the EPG created/updated? i.e. what if it changes?20:54
perexg linuxstb: next tuning the the mux will fix this list.. the services which disapper are also removed dynamically..20:56
amet perexg: and what would that look like? I am linux idiot (and intend to stay one)20:56
perexg amet: it should be a big text file..20:56
amet from webui?20:56
linuxstb perexg: I'm missing something - I thought this meant the mux wouldn't be tuned?20:57
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perexg amet: yes, use webui to configure the debug log.. then restart tvh to generate the log..20:58
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perexg linuxstb: might be, but I assume that if user has a new service, then he will tune to the mux with EPG (which is normally same mux as with the streamed service).. for dedicated EPG muxes - there are probably other services, so the information will be updated in the next tune request.. and for last - user might trigger to tune the mux manually (using the play link or mux scheduler)..21:03
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linuxstb perexg: I'm just trying to understand what the change does, not judging ;) So if a mux has no epg data for any mapped services, it will never be tuned again? Or maybe on restart of tvh if initscan is enabled?21:06
zino perexg on the new config, tvh dont scan mux with 4 switch port , i test before adam include scan network mode ?21:06
perexg linuxstb: yes and yes, initscan also ensures that this information is updated...21:07
linuxstb: another possibility is to set the scan status to 'pending' to invoke new mux scan..21:08
linuxstb perexg: Is there any feedback in the UI to say that the mux is disabled this way?21:10
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perexg linuxstb: not yet.. but it might be worth to write something to log .. thanks for the idea..21:14
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linuxstb perexg: Is this status just held in memory, or written to the mux's config file?21:19
i.e. does it persist across restarts?21:19
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Janusz1 Hi. Could you recommend some dvb-t card that can handle 3 freq at once?21:41
dickon Usually, a quad-tuner TBS card does nicely, but last I looked, they'd removed all their -T and -T2 cards from their website.21:42
Janusz1 hmm, it will be hard to find it locally, but thanks21:49
linuxstb Janusz1: Do you just want -T, or -T2 as well? I've been happy with my TBS 6284 (quad -T2 PCIe)21:50
It's relatively expensive though.21:50
Janusz1 I only need -T21:50
linuxstb c0mm0n: Are you supporting Costa Rica? ;)21:51
c0mm0n yes :’(21:51
linuxstb Janusz1: Are you looking for USB or a PCI card?21:56
Janusz1 I think pci, I had one usb already, but it broke down after 2 days of streaming...21:58
linuxstb I've been happy with my Hauppauge dib0700-based USB tuners. I've both the usb stick (the "Duet") and the PCI version (Nova-T 500). The PCI is just USB-over-PCI.22:00
These are dual-tuners, so you would need two of them.22:01
Janusz1 ok, thanks22:10
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ckarrie c0mm0n: go Costa Rica!22:16
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linuxstb c0mm0n: And ckarrie wasn't here for the penalties ;)22:58
c0mm0n linuxstb: yes dunno what to think about that22:58
but CR win I take that22:58
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Gary_The_Brown Hi guys. i have a couple of hours to spare at the moment and i'm going to sort out the rotor time code and just wondering if you's can save me time looking for the variables i need. where would i get the current tuned service and tuning to info (rotor position).23:35

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