MythLogBot@irc.freenode.net :: #mythtv

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Tuesday, October 7th, 2014, 00:04 UTC
[00:04:02] jya: mythtranscode is rather important (certainly something that is being most screamed at)
[00:04:45] jya: working at mozilla has opened my eyes in many ways regarding codecs… and the more it goes, the more I want to ditch patented codec. and focus on open one instead.
[00:05:44] jya: so webm or mkv as container and vp8/vp9/opus/daala
[00:08:28] stuartm: as much as I like the idea of using open codecs (I really do), a lot of people are transcoding for playback on other devices which have limited support for non-MPEG codecs
[00:09:11] stuartm: certainly we should have dropped NUV+MJPEG for non-lossless transcoding (and framegrabbers) many years ago
[00:09:16] jya: well, time to try to change that isn’t it :)
[00:10:15] stuartm: there mkv + VP8/9 makes sense, anything we choose as a default can always be changed by the user through settings or transcoded to a more supported format
[00:10:23] jya: While I’m a big Apple fan, I certainly don’t support their locking on content
[00:10:57] jya: with ffmpeg, once we support a particular codec, changing to also support say h264 will be a one line change
[00:11:34] jya: and for people wanting to stream it, they can use an android or … firefox os phone :)
[00:11:46] stuartm: yup, that's why it should be a priority
[00:13:31] jya: i’m still very keen on adding liveTV streaming… I just don’t get my head around it.. come the week-end, I’m stuffed with very strong lack of will to be on the computer again :(
[00:13:47] stuartm: :/
[00:14:01] jya: and comes november, with my 3rd child due, it will only get worse...
[00:14:09] stuartm: 1am here, so I'm calling it a night
[00:14:17] jya: have a good night
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[12:10:14] stuartm: is there any way to exit from the frontend/backend before we've started the event loop, but still ensure we flush the log to stdout?
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[12:54:13] stuartm: jya: so the rabbit hole deepens with the backtrace just posted to -dev, we've got code calling av_free_packet() then continuing to use that same packet even though it now has no buffer
[12:54:46] stuartm: eventually crashing when something else calls av_free_packet triggering a double free
[12:55:08] MythBuild: build #752 of master-f20–64bit is complete: Failure [4failed unit test core] Build details are at http://code.mythtv.org/buildbot/builders/mast . . . t/builds/752 blamelist: Stuart Morgan <smorgan@mythtv.org >
[13:00:14] MythBuild: build #1225 of master-fedora-32bit is complete: Failure [4failed unit test core] Build details are at http://code.mythtv.org/buildbot/builders/mast . . . /builds/1225 blamelist: Stuart Morgan <smorgan@mythtv.org >
[13:02:01] MythBuild: build #1321 of master-f19–64bit is complete: Failure [4failed unit test core] Build details are at http://code.mythtv.org/buildbot/builders/mast . . . /builds/1321 blamelist: Stuart Morgan <smorgan@mythtv.org >
[13:04:54] stuartm: why would a unit test suddenly start failing
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[14:12:13] dekarl: I think its due to asynchronous inode failure between host and guest.
[14:17:38] dekarl: You added some stuff to the text, maybe shuffling stuff around in such a way that it uncovered a memory corruption in another of my tests. (the bofhserver made me write the first answer)
[14:18:09] dekarl: meh, just cross checked... And surprise, it works-for-me
[14:19:24] dekarl: looks like it fails in Testvideometadata::ProgramWithInetref so hard that QUnit can't continue
[14:30:27] stuartm: fails here and I've discovered that with multiple tests per unit test you can't see which is actually failing
[14:42:18] dekarl: ./test_videometadata -v2
[14:42:19] dekarl: ?
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[15:14:55] stuartm: dekarl: very first compare
[15:15:05] stuartm: why are we converting to RecordingInfo there?
[15:17:46] stuartm: I'm not saying that's why it's throwing an error, but it seems odd
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[16:00:40] stuartm: jya: with the latest patch there are zero leaks, no warnings from valgrind and possibly the best result of all, a recording from 2007 which mythtranscode has always errored on has transcoded for the very first time
[16:00:49] dekarl: the idea was something with testing which values from progam make it to recorded. (e.g. inetref) to catch cases where might still look up tmdb instead of tvdb
[16:01:03] esperegu: any of the devs has a bananapi? I think the potential as a low power frontend is huge.
[16:01:43] stuartm: basically I seem to have inadvertently fixed issues in mythtranscode which have existed for 7 years ...
[16:03:02] stuartm: esperegu: none that I know of
[16:05:23] esperegu: anybody has a suggestion for a better frontend?
[16:13:47] gigem: stuartm: Bravo!
[16:17:13] stuartm: gigem: well I may not be able to take all the credit, there have been other changes since I last tried this particular file, but it's managing to transcode some others which had also been failing so it's looking good
[16:17:23] stuartm: just needs to not crash for George Nassas
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[16:22:28] tgm4883: In MythUI, Can I use a mask to show completely through an image to the background?
[16:22:39] stuartm: yes
[16:23:32] tgm4883: sweet
[16:23:33] stuartm: masks are grayscale, where black is fully transparent, and white is opaque, greys work just like an alpha channel
[16:23:47] stuartm: or is it white is fully transparent ... one or the other
[16:24:08] gigem: stuartm: It's still a big accomplishment.
[16:24:11] stuartm: so you can use them to create fade effects etc
[16:24:33] tgm4883: oh I think I get it now. By transparent, that is making the image transparent, not that the mask file is transparent and you can see the coverart.
[16:24:37] tgm4883: I was reading that all wrong
[16:25:09] stuartm: gigem: hopefully with no regressions such as frame corruption or even dropped frames – not noticed any of that in my limited testing, but a lot depends on the source input
[16:26:32] stuartm: tgm4883: correct, mask itself isn't displayed, it affects the imagetype that it's applied to, common usage is to add rounded corners to things like channel icons, fanart etc
[16:26:51] tgm4883: yea that is exactly what I'm doing, adding it to coverart
[16:27:08] stuartm: tgm4883: if you want a 'hole' in the image, then use a mask
[16:27:31] stuartm: if you want the image to be transparent, use <alpha>
[16:27:41] stuartm: and if you want to crop the image <crop>
[16:28:23] stuartm: if you want part of the image to be transparent/translucent, then again use <mask>
[16:28:54] stuartm: I should put some examples on the wiki if they aren't already available
[16:29:45] stuartm: masks are the coolest effect, you can create all sorts of shapes and effects with them
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[16:42:19] tgm4883: stuartm: yea you should add some example mask files for download
[16:42:35] tgm4883: I'm just trying a simple mask right now, doesn't seem to be working
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[16:44:42] stuartm: want me to take a look?
[16:46:31] tgm4883: if you want, the mask is a black-transparent png file as discussed at http://www.mythtv.org/wiki/MythUI_Theme_Development
[16:47:51] tgm4883: stuartm: looks like http://ibin.co/1cvifEqCYtY5 but the corners are transparent (i tried white corners too) http://ibin.co/1cvifEqCYtY5
[16:48:46] tgm4883: stuartm: lines 642 and 676 is where I added it http://pastebin.ubuntu.com/8515697/
[16:49:30] stuartm: have you cleared the theme cache?
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[16:50:07] stuartm: I'll be back in a short while, grabbing something to eat
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[16:51:15] tgm4883: well hmm, apparenlty not. what is the best way to do that? I usually just hit the "refresh/reload theme" button
[16:51:39] tgm4883: it's masking now that I've deleted the themecache directories
[17:19:47] stuartm: I need to fix that, we don't include the mask info in the cache string, so it doesn't know that the cached image is now invalid
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[17:53:42] dekarl: stuartm, is this off by one something for you? https://code.mythtv.org/trac/ticket/11924
[18:00:30] stuartm: dekarl: maybe I'll take a look, but I'm not intending to become the maintainer for mythtranscode
[18:04:54] tgm4883: stuartm: This is what I've done with the masking http://ibin.co/1cw56AaT2jrI One thing that I found that wasn't super straight forward was why when I set the image size, button size, and mask size all the same it would cut off the top and bottom part of the mask (and possible the image) giving me not rounded corners, but slightly tapered corners
[18:05:25] tgm4883: What is odd, is I seem to be able to recreate this if I move the selected item border in so it hugs the masked image
[18:05:58] tgm4883: slightly different from that, is that I couldn't get the draw order to work right either. Doing a solid button background was drawing over the image
[18:07:24] stuartm: tgm4883: are you using preserveaspect?
[18:07:47] tgm4883: stuartm: yes, set to true
[18:08:15] stuartm: that would result in the image not exactly matching the dimensions you specified since it will adjust the image height/width to keep the proportions
[18:08:35] tgm4883: hmm
[18:08:54] tgm4883: but shouldn't the mask size be the same though, since I made the mask to fit the height/width?
[18:09:02] stuartm: so the image will actually be a little shorter and the mask won't match up perfectly
[18:09:28] tgm4883: I'd think I would expect then to see proper corners, but the masked image might be different
[18:09:37] tgm4883: ah
[18:09:38] stuartm: tgm4883: the mask isn't adjusted to fit the actual dimensions of the image, doing so would be tricky
[18:09:54] tgm4883: stuartm: so coverart then isn't all the same size from tmdb :/
[18:10:16] stuartm: we'd have to keep rescaling the mask depending on the actual displayed image, it can be done, but we chose not to do it for performance reasons
[18:10:28] tgm4883: yea I think performance is better
[18:10:52] stuartm: tgm4883: unfortunately not, it's usually pretty close but not exactly the same
[18:11:12] stuartm: you can usually get away with not using preserveaspect on posters
[18:11:18] dekarl: tgm4883: sounds like you want posters from https://fanart.tv/movie/195589/neighbors/ they have agreed upon aspect for all images instead of the "free for all" over at tmdb
[18:13:32] dekarl: Can we not keep the aspect in such a way that a small part of the poster is cut off to make it match the intended size? IIUIC we now scale the image down until it fits the target size, leaving some space empty
[18:19:34] stuartm: dekarl: we could look at adding a new scaling mode
[18:21:38] stuartm: I find that letting posters be stretched to fit is hardly noticeable, but I also like the idea of giving people a choice of scale+stretch, or scale+crop
[18:28:08] tgm4883: dekarl: yea that sounds like what I want
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[19:08:58] esperegu: I just did a dist-upgrade and got the latest mythtv from the PPA and there are now some errors in decoding: http://dpaste.com/2P0Q9DD
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[19:11:15] stuartm: was the nvidia driver updated at the same time?
[19:11:46] tgm4883: stuartm: any way to add spacing horizontally and not vertically while in grid format?
[19:12:08] esperegu: more errors: http://dpaste.com/2RPWC65
[19:12:36] stuartm: esperegu: no-one has touched the decoding side of things in months, that error could be due to corruption in the broadcast stream, check the aerial connection
[19:12:37] esperegu: stuartm: any way to check?
[19:13:17] stuartm: tgm4883: spacing between items in the grid?
[19:13:17] esperegu: stuartm: hmm. that be a big coincidence to happen the same moment I update
[19:13:31] tgm4883: stuartm: just horizontal spacing. Vertical spacing is fine
[19:13:39] stuartm: esperegu: you'd be surprised how often it does just work out that way though
[19:13:43] tgm4883: the <spacing> does both
[19:13:54] stuartm: esperegu: as I noted, nothing at all has changed there is a long time
[19:14:27] tgm4883: our packaging server changed, but that isn't where it was building so I don't know if that could be an issue
[19:15:19] esperegu: stuartm: signal is 73% and s/n is 4.7 db. thats ok.
[19:16:21] esperegu: stuartm: these warnings are the same I saw on the arm by the way.
[19:16:49] stuartm: tgm4883: no way presently to specify different amounts of spacing, but you can give the illusion of more space by having your background not fill the entire width of the button
[19:17:17] stuartm: esperegu: suggest you take it up over at #mythtv-users
[19:17:58] tgm4883: stuartm: I thought I tried that as well, and the button width didn't seem to help. Let me try that again
[19:17:59] esperegu: stuartm: sure. but it seems to have happened in the last few weeks cause the last build was 8 weeks ago: https://launchpad.net/~mythbuntu/+archive/ubuntu/0.28
[19:18:05] stuartm: tgm4883: allowing different spacing is something I can look at adding
[19:18:42] stuartm: tgm4883: keep the button width the same, just move the content in by a margin on each side
[19:19:31] tgm4883: stuartm: well right now the button size hugs the content
[19:19:50] tgm4883: so moving the content in would cause it to go out of the button
[19:20:01] tgm4883: I suppose if I increase both that might work
[19:22:16] stuartm: esperegu: and I'm saying that it's not a new mythtv bug but an issue on your end, the only commit in that area was this one – https://github.com/MythTV/mythtv/commit/33ea8096
[19:23:41] stuartm: it might be responsible, so by all means try reverting it locally, but no-one else has reported issues in the three weeks since it was committed
[19:26:12] esperegu: stuartm: let me see if I can revert back to the previous ppa. but it is quite a coincidence that I try to fix similar issues for days already on the ARM (which was compiled master checkout) and now an update gives me similar stuff on my normal frontend
[19:54:35] dekarl: stuartm, I'm trying to remove the copy from ProgramInfo to RecordingInfo, looks like I decided to use the easier constructor from ProgramInfo to keep the code readable
[19:56:36] esperegu: anybody knows how I can downgrade to a lower PPA? https://launchpad.net/~mythbuntu/+archive/ubuntu/0.28
[19:57:18] tgm4883: esperegu: you can uninstall the package, reinstall the older packages, and restore your database
[19:58:26] esperegu: tgm4883: I tried to: dcerouter_1039929:~# export MYTHVERSION=2:0.28.0~master.20140812.0f11604–0ubuntu0mythbuntu2
[19:58:26] esperegu: dcerouter_1039929:~# apt-get install -d --reinstall libmyth-0.28–0=$MYTHVERSION mythtv-backend=$MYTHVERSION mythtv-common=$MYTHVERSION mythtv-frontend=$MYTHVERSION mythtv-transcode-utils=$MYTHVERSION libmyth-python=$MYTHVERSION libmythtv-perl=$MYTHVERSION mythtv-dbg=$MYTHVERSION mythweb=$MYTHVERSION
[19:58:38] esperegu: but it saids it does not find the packages
[19:58:56] tgm4883: esperegu: oh, an older version of 0.28, not reverting to 0.27
[19:59:44] esperegu: tgm4883: yes. to check if the decode errors arrise from the latest version or somewhere else
[20:02:40] tgm4883: esperegu: you can see which versions are available by doing "apt-cache show mythtv-backend | grep -i version"
[20:02:47] tgm4883: if it's not listed there, you can't revert to it
[20:03:40] esperegu: tgm4883: :-(
[20:03:43] tgm4883: esperegu: I'd point out that the version you are (trying) reverting to is super old and will have quite a few changes in it
[20:04:14] esperegu: tgm4883: I tried others first but it did not find any
[20:04:24] dekarl: esperegu: first google hit http://pastebin.com/ZLyUgrp6 its from Oct 5th. Oh and from fixes/0.27
[20:04:44] tgm4883: the command I gave you above is querying the repos for versions
[20:05:47] tgm4883: esperegu: the package is so old, that I'm not even sure if your system would still have a cached copy
[20:07:25] tgm4883: esperegu: you could look in /var/cache/apt/archives/ and see if the packages are there
[20:07:50] esperegu: tgm4883: I did apt-get clean
[20:08:38] tgm4883: ok well that I don't know what to tell you
[20:11:32] dekarl: esperegu: another hit http://ubuntuforums.org/showthread.php?t=2186505 hints to look out for permissions around ~
[20:14:08] esperegu: dekarl: thx. looks ok: http://dpaste.com/33V82AM
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[20:31:23] paul-h: !seen stichnot
[20:31:23] MythLogBot: stichnot was last seen 11 days 3 hours 40 minutes 35 seconds ago
[20:33:06] paul-h: Am I remembering correctly stichnot removed the ability to start live TV in the guide so #10368 is no longer valid?
[20:33:06] ** MythLogBot http://code.mythtv.org/trac/ticket/10368 **
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[20:46:38] stuartm: dekarl: well since all the methods and variables used are in ProgramInfo, for now there seems little reason to use RecordingInfo at all
[20:46:53] stuartm: unless I'm missing something
[20:47:45] stuartm: paul-h: I don't remember :/
[20:48:47] esperegu: I downloaded the debs from here: https://launchpad.net/~mythbuntu/+archive/ubu . . . uild/6407231 and that seems to work ok.
[20:49:08] dekarl: stuartm, I'm considering to just disable the inetref test as it appears to try to connect to the local database and do some logging
[20:49:34] dekarl: at least according to valgrind
[20:50:35] stuartm: dekarl: the db connection may explain why it's now failing, we now exit if we cannot create the database object (should only happen if we can't load the qt mysql driver)
[20:50:46] stuartm: could it be that those build slaves are missing the driver?
[20:51:09] stuartm: wouldn't explain why it fails here though
[20:52:25] dekarl: skipping that test makes valgrind much happier
[20:52:59] stuartm: since the build slaves won't have databases anyway, it's moot I guess
[20:53:38] esperegu: stuartm: dekarl: do I need to file a bug or watch a bit more tv first?
[20:54:25] dekarl: esperegu: what are you doing when that happens?
[20:55:24] paul-h: stuartm: still seeing #12199 ?
[20:55:24] ** MythLogBot http://code.mythtv.org/trac/ticket/12199 **
[20:56:13] esperegu: dekarl: watching live tv
[20:57:34] dekarl: esperegu: signal quality is good? (bit error rate / uncorrectable blocks) What decoder is that, software only? Maybe the video unit fell asleep and needs a cold start. (just a WAG)
[20:58:17] esperegu: dekarl: looked ok. 73% and 4.7 s/n
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[21:00:09] stuartm: paul-h: I've not noticed it recently, but I've not been trying to reproduce it either, I'll try that tomorrow
[21:00:58] stuartm: I think some fixes went in since then which may have solved it
[21:02:46] stuartm: esperegu: the BER should be checked as well, a strong signal can still contain errors
[21:02:59] stuartm: especially if there is local interference
[21:03:31] esperegu: stuartm: I think that was 0
[21:03:47] dekarl: esperegu: that would be good, 100% :)
[21:04:30] dekarl: that should rule out stream errors on the transmission as a cause
[21:06:33] esperegu: ber currently 0
[21:06:40] esperegu: when I tune to a channel
[21:09:43] esperegu: dekarl: I am using an nvidia vdpau gt 520 card
[21:09:50] dekarl: (22:55:02) esperegu: haven't seen the issue again thus far
[21:10:04] dekarl: so its working again after reinstalling a different version?
[21:10:10] esperegu: dekarl: yes
[21:10:46] dekarl: esperegu: do you use the video processing unit of the card? (e.g. a VDPAU decoding profile)
[21:10:50] esperegu: dekarl: I downgraded to the ppa from the 25th https://launchpad.net/~mythbuntu/+archive/ubu . . . uild/6407231
[21:10:57] esperegu: dekarl: yes
[21:16:59] stuartm: aw nuts, just had my first transcode fail
[21:21:47] dekarl: stuartm, with dynamic PMT? aka audio streams coming/going
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[21:35:58] ** esperegu zzzzzzzzzZZZZZZZZZZZZZZzzzzzzzzzzzz **
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[21:44:22] stuartm: dekarl: haven't dug into it, it's the classic "Deadlock detected, one buffer empty while the other is full"
[21:45:26] stuartm: "Deadlock detected. One buffer is full when the other is empty! Aborting"
[21:48:17] stuartm: looking at the code we're supposed to increase the ringbuffer size to avoid hitting that problem, but that never happened in this case, so maybe that's broken
[21:51:29] MythBuild: build #754 of master-f20–64bit is complete: Success [3build successful] Build details are at http://code.mythtv.org/buildbot/builders/mast . . . t/builds/754
[21:51:54] MythBuild: build #1227 of master-fedora-32bit is complete: Success [3build successful] Build details are at http://code.mythtv.org/buildbot/builders/mast . . . /builds/1227
[21:54:47] MythBuild: build #1323 of master-f19–64bit is complete: Success [3build successful] Build details are at http://code.mythtv.org/buildbot/builders/mast . . . /builds/1323
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[22:08:48] stuartm: if I double the output buffer it transcodes, but with no audio
[22:09:26] dekarl: stuartm: did it detect the audio stream at all?
[22:10:03] dekarl: trying -O FFMPEGTS might be useful in case the streams did not get detected
[22:13:53] stuartm: didn't help, the streams are properly detected by our modified mpeg parser and both! are included in the output file but both with a bitrate of zero
[22:14:22] stuartm: just going to mark this one down as a very damaged file and I'll move on
[22:15:47] dekarl: sounds like I have to look at the off-by-one and then try to run some of my backlog through mythtranscode :) (hitting sack now)
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