MythLogBot@irc.freenode.net :: #mythtv

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Monday, October 26th, 2015, 00:08 UTC
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[08:45:53] stuarta: morning all
[08:55:53] lautriv: moin
[08:56:34] lautriv: may anyone have a look at this Xorg.0.log and tell me if there is smth obv. wrong ? -> https://bpaste.net/show/96c80133185f
[08:59:47] lautriv: i could imagine the auto-selected 1024x768 is suboptimal b/c it would need to resize any format ...
[09:05:50] stuarta: well it just means it needs to scale, or letterbox
[09:08:48] lautriv: TV can do 1920x1080 but afair VGA sends limited size, i don't use HDTV so maybe a lower res may be better ? ( CPU does an average of 25% but still stuttering )
[09:09:49] stuarta: ah, it's connected to a TV? they quite often only present the VGA modes (up to 1024x768) via the vga port
[09:10:06] stuarta: mine's the same. have to connect to it's hdmi port to get the full resolution
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[09:56:00] warpme: jya: just small update about last ffmpeg28 for me: 1\VAAPI not working (but You are pretty aware of this :-) );
[09:56:30] jya: warpme: vaapi is working for me
[09:57:18] jya: with the last change https://github.com/MythTV/mythtv/commit/c7f55 . . . 942484c9340e
[09:57:23] warpme: 2\BluRay rips are working now; 3\I can't playback movies when audio config has enabled DD. frontend jaust hangs with "Please wait".
[09:57:29] jya: so no, I'm not "pretty aware of this"
[09:58:56] jya: warpme: please open some tickets, because otherwise I can't remember everything... let me create an umbrella bug, you can make then all your bug blocking that meta bug
[09:59:02] warpme: jya: oops – It look I missed some commits from yesterday :-). Give me sec – Ill compile most current code and will report :-p
[09:59:32] warpme: jya: perfect. thx!
[10:01:17] jya: warpme: bug https://code.mythtv.org/trac/ticket/12527
[10:01:51] jya: I tested VDPAU, VAAPI, OpenGL, xv.. It's all working nicely now. No more black screen
[10:02:02] jya: I tested mythmusic too
[10:02:14] jya: my next check is going to be testing transcoding
[10:02:47] jya: it's working very nicely now. I didn't manage to boot my linux PC with a 5.1 digital audio with my external USB drive
[10:02:56] jya: so I didn't check digital audio I must admit
[10:03:10] jya: I can't see how that couldn't work however, we do not rely on FFmpeg for this anylonger
[10:06:10] warpme: jya: I'm in work now and need 1h for meeting. Will back here after 1–1.5h
[10:08:21] stuarta: jya: evening, thanks for your work on the ffmpeg merge.
[10:09:14] jya: stuarta: no worries. sorry it's taking this long
[10:09:29] stuarta: take as long as you want. it's a non trivial thing
[10:09:35] stuarta: s/want/need
[10:09:49] jya: I spent several hours (almost a day) debugging why I got no video with my BD rip.
[10:10:00] jya: turned out it was a music BD !
[10:10:05] stuarta: doh!
[10:10:12] jya: only noticed last night, I was furious :)
[10:10:41] jya: and debugging the mpegts demuxer I had to go line by line in comparison between master and the resync.
[10:10:50] jya: seeing that I know nothing about mpegts
[10:11:16] stuarta: not surprised.
[10:11:22] jya: so I had started to update the ffmpeg's mpegts demuxer instead so it would provide the features we need
[10:11:28] stuarta: i'm going to see if I can glue in the decoder for h265
[10:11:36] stuarta: i have some UHD test streams
[10:11:39] jya: made good progress, but my guess is that ffmpeg will never accept those changes
[10:11:43] stuarta: currently we don't identify the video
[10:12:08] stuarta: jya: do we need to refactor what we are doing to make stuff acceptable to ffmpeg?
[10:12:26] jya: it's more to do with the logic
[10:12:31] jya: we added some callback
[10:12:45] jya: when they've been pretty much removing all of those over the years
[10:13:10] jya: so they have worked quite a bit to eliminate that logic , I doubt they will want that back in
[10:13:13] stuarta: well is there a better way to do it? or a way that's compatible with what they do?
[10:13:24] jya: they do have a way
[10:13:40] jya: the get_format() is called now whenever there's a change of stream
[10:13:59] jya: the other bit is our handling of subtitles
[10:14:08] jya: they have a unique subtitle structure
[10:14:21] jya: we have about 4 different data structures for managing subtitles
[10:14:37] jya: and then we have the iscc stuff
[10:14:42] jya: our code is all super messy
[10:14:44] stuarta: so it may make sense to use their unified structure for subtitles one day
[10:15:00] jya: yes, but for me to do that, I need to know mpegts / DVB better
[10:15:12] stuarta: for me, that's the easy part
[10:15:26] stuarta: feel free to ask questions on it
[10:15:30] jya: there's the teletext subtitles, the dvb subtitles, the ATSC subtitles, and the list goes on
[10:15:40] stuarta: messy
[10:15:43] jya: my guess is that it's something they would be very keen on supporting
[10:16:11] stuarta: i don't know if you get teletext subtitles outside of analogue recordings
[10:16:42] stuarta: but dvb and atsc (several types) definitely do
[10:17:17] jya: I have a dvb recording, when I press T it states "teletext"
[10:18:30] jya: the best thing in all of this, is that I finally managed to get Eclipse to edit and decode
[10:18:38] jya: this is so much better than kdbg
[10:18:49] stuarta: \o/
[10:19:02] jya: was actually very simple to setup
[10:19:46] jya: oh, btw, I don't understand how the current master is compiling for the buildbot, when it didn't compile the ffmpeg28 branch
[10:19:56] jya: the problem is the same on all version (including 0.27)
[10:20:37] stuarta: maybe it is to do with how the symbols are exported?
[10:30:37] lautriv: stuarta, got a complete ISP cut, did you say something about my Xorg ?
[10:31:36] stuarta: yes
[10:31:53] stuarta: http://irc.mythtv.org/ircLog/channel/4/2015-10-26
[10:34:36] lautriv: ah, yes but i wondered if a lower res. may help to de-stutter.
[10:36:15] stuarta: it'll probably still have to scale it
[13:25:04] warpme: jya: it looks vaapi issue is resolved. Great. Unfortunatelly DD issue is still present. I fill info about this in #12527
[13:25:04] ** MythLogBot http://code.mythtv.org/trac/ticket/12527 **
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[13:35:30] lautriv: was there ever a plan for mpv ?
[14:01:16] stuarta: mpv?
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[15:37:50] lautriv: stuarta, successor of mplayer
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[16:25:20] ** stuarta fiddles some more with smolt backend packaging **
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[19:18:41] dekarl: stuarta, german DVB-T has (or at least when I last looked) used only DVB teletext subtitles where the same channel has proper DVB picture subtitles on DVB-C and DVB-S.
[19:19:39] dekarl: \o/ more packaging
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