[Ffmpeg-devel-irc] ffmpeg-devel.log.20180609

burek burek021 at gmail.com
Sun Jun 10 03:05:04 EEST 2018

[00:00:50 CEST] <atomnuker> does anyone actually implement that? I thought subs in teletext was the state of the art nowadays
[00:00:57 CEST] <JEEB> oh they do
[00:01:26 CEST] <JEEB> there are some media serving things that take in live subtitles as TTML in MP4 or ISMV (lol)
[00:01:49 CEST] <JEEB> while I just prefer having webvtt files linked somewhere for them subtitles
[00:22:10 CEST] <January> atomnuker: 'subs in teletext' I'm having flashbacks...
[00:22:30 CEST] <JEEB> that's normal, teletext subtitle pages
[00:22:44 CEST] <January> 'normal'
[00:22:51 CEST] <JEEB> for EU broadcast yes
[00:23:00 CEST] <JEEB> for JP you have ARIB STD-B24 captions
[00:23:14 CEST] <JEEB> for US/Korea/few others you have CEA-608/708 captions
[00:23:26 CEST] <JEEB> (last of which is in the darn video track)
[00:24:22 CEST] <January> I'm so happy I rarely deal with broadcast
[00:28:10 CEST] <atomnuker> I had to implement the australian version which was just the ETSI version (or maybe it was the other way around)
[00:28:31 CEST] <JEEB> ETSI is basically the DVB variant
[00:28:38 CEST] <JEEB> so EU-based
[00:30:30 CEST] <atomnuker> right, I never had to deal with non-dvb stuff
[00:33:45 CEST] <atomnuker> huh, I wonder why south america which was pal switched to isdb
[00:34:06 CEST] <JEEB> they will still be pushing out 50Hz I think
[00:34:10 CEST] <atomnuker> at least I'm glad pal and (me)secam countries switched to dvb
[00:34:21 CEST] <JEEB> it's mostly the ISDB transmission stuff I think
[00:34:34 CEST] <JEEB> and ARIB EPG etc is pretty much what DVB does
[00:35:17 CEST] <JEEB> there's some almost-like-HTML multimedia bollocks and proper styled captions support, but I'm not sure if those countries will even use that
[00:35:32 CEST] <JEEB> because what they basically decided upon is just the radio part of ISDB
[00:35:41 CEST] <atomnuker> does it already have javascript support so you can make it flash?
[00:36:04 CEST] <JEEB> I don't think so, but I'm pretty sure you can make it flash in other ways
[00:36:05 CEST] <JEEB> lol
[00:36:53 CEST] <atomnuker> I bet there's someone somewhere in a dark basement with no windows who's working on adding java applet support in subtitles
[00:41:46 CEST] <nevcairiel> the blu-ray java menu stuff is largely derived from some dvb java specs, i always wondered where those got used
[01:04:49 CEST] <jamrial_> jkqxz: ping
[01:49:58 CEST] <jdarnley> https://tweakers.net/aanbod/1634409/24-core-xeon-e5-v4-256gb-ecc-met-dual-10gbit-upgradeset.html
[01:50:22 CEST] <jdarnley> I wonder if I could persuade anyone to buy me a ridiculously OP server.
[01:54:14 CEST] <jamrial_> jdarnley: that's old by now
[01:56:56 CEST] <jdarnley> Newer than everything else in my house
[01:57:44 CEST] <nevcairiel> yeah thats broadwell, not even avx512!
[01:58:07 CEST] <jdarnley> Oh wait.  I guess I do have a Skylake sitting next to me but since it is a laptop it doesn't really count.
[02:10:38 CEST] <January> nevcairiel: do we have anything notable using avx512 yet?
[02:11:09 CEST] <jdarnley> I don't think there's any thing using it in ffmpeg
[02:11:24 CEST] <jdarnley> x264 can though
[02:12:49 CEST] <January> nice. I recently got a 4k UHD monitor, still waiting on a cable to actually use the HDR. What can I even do with it? When I get the cable I wanna test a bunch of stuff
[02:14:00 CEST] <January> even without HDR it's a massive improvement, my previous monitor was horribly broken and displayed terribly bad washed out colours. Being able to actually see the difference between lossless and lossy content is always a plus...
[02:16:31 CEST] <atomnuker> you formulated that as if with hdr it would be an improvement
[02:19:13 CEST] <January> atomnuker: well I did assume there would be an improvement with HDR
[02:21:42 CEST] <January> atomnuker: you dont seem to agree?
[02:23:44 CEST] <atomnuker> not really, considering its supposed to make your eyes respond as if the brightness transitions are real
[02:24:03 CEST] <atomnuker> so you're meant to be blinded if the video goes dim->bright->dim
[02:24:35 CEST] <atomnuker> so you need a tone mapping algorithm anyway to reduce the deltas that studios overuse because its still a fad
[02:24:48 CEST] <atomnuker> tbh I'd much rather prefer an oled display
[02:25:04 CEST] <atomnuker> something where the darks are as dark as possible
[02:40:22 CEST] <nevcairiel> oleds are only really worth it if you have a pitch black viewing room
[02:40:48 CEST] <nevcairiel> otherwise the black advantage isnt really worth much
[02:43:55 CEST] <atomnuker> the sun's annoying, nights are for working through
[02:47:22 CEST] <nevcairiel> PC monitors in OLED will likely never happen though
[02:47:30 CEST] <nevcairiel> they cant solve the image retention issues
[02:47:48 CEST] <nevcairiel> maybe in micro-led
[02:48:19 CEST] <atomnuker> you mean ghosting? its non-permanent, isn't it?
[02:48:34 CEST] <atomnuker> *burn-in
[02:49:12 CEST] <nevcairiel> not sure if its permanent-permanent, but its definitely visible for a while, and PCs often have a lot of static content on screens
[02:49:18 CEST] <atomnuker> ghosting's not too bad as long as it quickly disappears and the refresh rate is high
[02:50:29 CEST] <January> I have a BenQ EW3270U, I'm actually not sure how it compares to other UHD monitors though. What do you guys have?
[09:10:55 CEST] <cone-107> ffmpeg 03Gyan Doshi 07master:7b80df677aa8: doc/filters: change subtitles example to hint at correct color syntax
[20:58:54 CEST] <cone-510> ffmpeg 03Jacob Trimble 07master:cf81a9c07891: avformat/mov: Fix reading saio/saiz for clear content.
[21:35:00 CEST] <cone-510> ffmpeg 03Carl Eugen Hoyos 07master:5686c4489a01: ffmpeg: Fail if the user requested impossible subtitle encoding.
[00:00:00 CEST] --- Sun Jun 10 2018

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