[Ffmpeg-devel-irc] ffmpeg-devel.log.20190711

Fri Jul 12 03:05:03 EEST 2019

[00:42:36 CEST] <tmm1> does the vaapi encoding api make it simple/possible to inject sei like a53cc?
[00:44:57 CEST] <nevcairiel> the vaapi encoding api has you assemble the bitstream yourself
[00:45:14 CEST] <nevcairiel> so adding SEI is relatively easy if you already do all that work anyway
[00:45:27 CEST] <philipl> Bonus!
[06:26:30 CEST] <cone-133> ffmpeg 03Steven Liu 07master:092bd1e54fef: avcodec/videotoolboxenc: remove unused variable
[06:26:30 CEST] <cone-133> ffmpeg 03Steven Liu 07master:1498e3943920: avutil/hwcontext_vaapi: move kernel_driver into CONFIG_LIBDRM
[06:26:30 CEST] <cone-133> ffmpeg 03Steven Liu 07master:1b1b974aace7: avformat/http: change error message from numeric code to string
[06:26:30 CEST] <cone-133> ffmpeg 03Steven Liu 07master:89ea0c9bfdab: fate: add hls_init_time option fate
[06:26:30 CEST] <cone-133> ffmpeg 03Steven Liu 07master:33a8cd5925a0: avformat/hlsenc: use one handler for m3u8 and segments
[06:26:31 CEST] <cone-133> ffmpeg 03Steven Liu 07master:af9dc02e6b07: fate: add hls_list_size fate test case
[14:36:01 CEST] <dastan> hello people
[14:36:25 CEST] <dastan> does someone know how to get a MPD link from youtube video?
[14:37:36 CEST] <dastan> i am working to process youtube video throw ffmpeg, and all my system was working in HLS but yesterday i saw that youtube change the live transmissions to DASH protocol
[14:39:17 CEST] <J_Darnley> I don't know.  Try youtube-dl, maybe
[14:41:17 CEST] <dastan> youtube-dl works fine giving me the HLS links, but not with dash
[14:41:40 CEST] <JEEB> please ask youtube-dl support then
[14:41:43 CEST] <J_Darnley> See if it has an option to give you this other thing
[15:16:07 CEST] <nevcairiel> youtube doesnt actually use dash that often anymore
[15:16:22 CEST] <kurosu> dastan: you've been asking for the past few days user questions, that belong to #ffmpeg. Could you ask them in #ffmpeg ?
[15:17:34 CEST] <dastan> i do, sorry
[15:18:49 CEST] <dastan> but sometimes the answers to questions like, does ffmpeg supprt dash with mpd links? are from the developpers
[15:19:03 CEST] <dastan> but sorry for today
[15:20:55 CEST] <kurosu> dastan: no, still user questions even if devs can be interested. This channel is about developing ffmpeg or libav* libs, not using or developing with. Says so in the channel topic
[15:21:21 CEST] <kurosu> Easier for people like me that have to quickly comb through the channel log
[15:26:52 CEST] <dastan> ok
[15:32:37 CEST] <Lynne> nevcairiel: they no longer do anything above low bitrate 720p h264 as non-dash
[15:35:02 CEST] <dastan> i dont know, my project is about live tranmission
[15:56:07 CEST] <thebombzen> it appears that matroska files muxed with mkvmerge pretty consistently produce this error in the matroska demuxer
[15:56:10 CEST] <thebombzen> [matroska,webm @ 0x55f302ca6140] Element at 0x1babba9b ending at 0x1babc008 exceeds containing master element ending at 0x1babba95
[15:57:00 CEST] <thebombzen> this is because mkvmerge adds the duration of the last frame
[15:57:12 CEST] <thebombzen> is this a violation of the matroska spec in mkvmerge, or a bug in ffmpeg?
[15:58:10 CEST] <thebombzen> cause either way, files freshly produced by mkvmerge shouldn't immediately spit out an error message in ffmpeg's demuxer. it's gotta be a bug in one of those two
[16:06:31 CEST] <mkver> It's a bug in our matroska demuxer. Your analysis is wrong; see here: https://ffmpeg.org/pipermail/ffmpeg-devel/2019-May/244193.html for why it happens.
[16:10:34 CEST] <kierank> durandal_1707: https://ffmpeg.org/pipermail/ffmpeg-devel/2019-July/246446.html
[16:10:38 CEST] <kierank> INCEPTION
[16:10:42 CEST] <kierank> fuzzer finds bug in fuzzer
[16:14:58 CEST] <nevcairiel> Lynne: i suppose it depends how you define dash, you can get progressive http streams of the video and audio data just fine for many files, they may put a dash manifest on top of that to have browsers manage it, but alas for many players its easier to just take those two streams as-is
[16:27:59 CEST] <durandal_1707> kierank: indeed, this is serious, is ffmpeg even real?
[16:28:21 CEST] <kierank> durandal_1707: my leader thinks we are in a simulation
[16:28:49 CEST] <durandal_1707> elon? i do not take him seriously.
[16:33:52 CEST] <durandal_1707> come on!, apply those matroska patches for once, will you ?
[16:39:00 CEST] <kierank> durandal_1707: yes, landing rockets and electric cars are fake
[16:39:00 CEST] <kierank> duh
[16:40:19 CEST] <durandal_1707> space is fake
[16:44:24 CEST] <kierank> ah ok
[16:44:26 CEST] <kierank> explains a lot
[16:54:34 CEST] <gnafu> If we're all living in a simulation, does that mean the outside world is even worse and /this/ is considered an improvement?
[16:54:51 CEST] <gnafu> Like, this is a VR game everyone uses to escape the woes of their existence?
[16:55:37 CEST] <J_Darnley> When you die in the game you "wake up" in real lift?
[16:55:49 CEST] <J_Darnley> Only to discover there is no heaven, only hell?
[16:56:13 CEST] <cone-194> ffmpeg 03Paul B Mahol 07master:2601eef850f1: avcodec/magicyuv: add support for recently added YUV444P10
[17:02:02 CEST] <gnafu> J_Darnley: But then are you given the option to go back in as a new character?  Or are we characters, and when we die it's just the end of our code?
[17:03:04 CEST] <J_Darnley> If you believe in re-incarnation then that is a sign that you bought the respawn expansion pack
[17:11:26 CEST] <durandal_1707> bought with what?
[17:20:40 CEST] <gnafu> durandal_1707: Probably some BS coins you got in-game that wealthier players just buy.
[17:21:08 CEST] <durandal_1707> aha, block-chain coins
[18:15:03 CEST] <kierank> karma
[19:55:25 CEST] <dastan> hi people
[19:55:51 CEST] <dastan> i want to let you know ffmpeg is not working with dash links in youtube live channels
[19:56:21 CEST] <dastan> is there one of the developpers right now?
[19:56:42 CEST] <durandal_1707> nope, devs are starving
[20:00:08 CEST] <kierank> dastan: open trac ticket
[20:00:13 CEST] <kierank> this is not place for bug reports
[20:00:17 CEST] <kierank> this is dev chat
[20:00:50 CEST] <dastan> kierank, i am new
[20:01:12 CEST] <dastan> sorry for the troubles
[20:01:18 CEST] <kierank> every day you come to channel and spam issue offtopic
[20:01:25 CEST] <dastan> i know there is a place to put that
[20:01:38 CEST] <dastan> but is interesting to talk with the devs time to time
[20:01:43 CEST] <nevcairiel> bug reports go on trac, general chat goes in #ffmpeg, if you want to actually work yourself on fixing it, then you can talk about it here
[20:02:10 CEST] <dastan> everyday? i enter to the irc about three days ago
[20:02:19 CEST] <dastan> you know me about one year?
[20:03:15 CEST] <kierank> 19:02:11 <dastan> everyday? i enter to the irc about three days ago
[20:03:19 CEST] <kierank> by definition that's every day
[20:04:42 CEST] <dastan> thats your definition of every day
[20:04:45 CEST] <dastan> i am new
[20:05:18 CEST] <dastan> so if you want you can bother someone else
[20:05:30 CEST] <dastan> i understand that i am doing something wrong
[20:06:00 CEST] <dastan> sorry for spam your precious irc
[20:06:26 CEST] <durandal_1707> this is call center, we wait for questions from users all the time
[20:07:02 CEST] <dastan> call center?
[20:09:53 CEST] <dastan> go and bother someone else ok, thanks for being nice
[20:11:31 CEST] <durandal_1707> we are ffmpeg gods, you can not treat us like that!
[20:14:49 CEST] <dastan> hey, i am very grateful about the work that you do with ffmpeg
[20:15:18 CEST] <dastan> i am making a project based on your system, but i am a technician, i am studing development at this moment
[20:15:46 CEST] <dastan> i really like to help if i can, but i cant
[20:16:55 CEST] <kierank> ask in #ffmpeg
[20:18:05 CEST] <jamrial> durandal_1707: don't be an asshole
[20:19:03 CEST] <durandal_1707> jamrial: or what?
[20:19:18 CEST] <JEEB> way to go with that reaction
[20:19:30 CEST] <jamrial> or nothing. just don't troll people with random nonsense
[20:20:11 CEST] <jamrial> if you can't, or wont aid someone asking for help, then just don't talk to them
[20:51:23 CEST] <BBB> dastan: I Think you misunderstand the goal of this channel; we try to help other/fellow ffmpeg devs work on (not with) ffmpeg. by expanding the scope of this channel to helping other/fellow devs work with (no on) ffmpeg, some devs will lose interest and will go away and no longer be on this irc channel. therefore, such questions should go elsewhere so the original scope of this irc channel can be maintained
[20:51:43 CEST] <BBB> dastan: questions of fellow ffmpeg devs working on (not with) ffmpeg go here; questions of fellow ffmpeg devs working with (not on) ffmpeg go in #ffmpeg
[20:52:16 CEST] <BBB> dastan: the same scope difference applies to mailinglists also (ffmpeg-devel@ for on-ffmpeg dev, libav-devel@ for api questions, ffmpeg-user@ for user questions)
[20:52:56 CEST] <BBB> the separation isn't for users; it's for devs. some devs don't want to help users, but we still want these devs to stick around and remain interested
[21:47:07 CEST] <dastan> jamrial, thanks for your support
[22:02:24 CEST] <kurosu> BBB: he's been told this 3 times now
[22:02:53 CEST] <kurosu> I can put him on ignore if all active devs here are ok with his behaviour
[22:02:58 CEST] <BBB> I am not
[22:03:31 CEST] <kurosu> (still, I'm on #ffmpeg, but rarely comment)
[22:05:30 CEST] <BBB> I'm not on #ffmpeg for this very reason ;)
[22:11:28 CEST] <durandal_1707> :(
[22:17:49 CEST] <Lynne> why are all emails from china in the future?
[22:18:13 CEST] <JEEB> something is handling time zones incorrectly or?
[22:18:21 CEST] <JEEB> because china is pretty far time zone wise
[22:19:30 CEST] <kurosu> because huawei is now futurewei
[22:53:44 CEST] <durandal_1707> Compn: are you real old Compn?
[22:54:28 CEST] <Compn> i dont have my freenode password at the moment, but yes, still in the middle of a move across country
[22:54:31 CEST] <Compn> what up durandal_1707 
[22:55:23 CEST] <durandal_1707> nothing, was just curious
[22:56:08 CEST] <Compn> durandal_1707,  i forgot, do you work on video filters? need someone to review / make patch and submit to mailing list the bright flash filter 
[22:56:19 CEST] <Compn> i asked michaelni but didnt get any reply via email
[22:57:04 CEST] <durandal_1707> Compn: i think OP lost interest after nobody came with actual real feedback
[22:57:05 CEST] <Compn> http://trac.ffmpeg.org/ticket/2104
[22:57:29 CEST] <Compn> thats fine his filter works good enough as is
[22:58:09 CEST] <durandal_1707> you tested it with real people?
[22:58:43 CEST] <durandal_1707> or you get headache with flashing lights after some time :) ?
[22:59:01 CEST] <JEEB> btw, do I remember correctly that we export the DRC information from certain formats for downmix?
[22:59:23 CEST] <nevcairiel> that is correct
[23:01:35 CEST] <JEEB> do we actually utilize that anywhere, or is the API user left to read that info from a structure and then pass it onto swresample/lavfi?
[23:04:56 CEST] <nevcairiel> its side data i believe, not sure we have anything that actually uses it
[23:07:09 CEST] <Compn> durandal_1707,  i tested the clips i have (which are on my other computer, i will upload when i get access to it again)
[23:08:15 CEST] <Compn> durandal_1707,  it will get real testing after it is introduced into the wild. i approve of it anyway
[23:08:31 CEST] <Compn> visually. i did not review code (it needs code review)
[23:08:49 CEST] <durandal_1707> Compn: code is mostly fine
[23:16:52 CEST] <michaelni> Compn, oops, i rememberf seeing the mail, i then wanted to look but totally forgot
[23:18:06 CEST] <Compn> no problem michaelni  :)
[23:18:47 CEST] <michaelni> well, its a problem for anyone who would have benefited from the filter :(
[23:19:42 CEST] <durandal_1707> there is even paper that specifies how filter should operate in some detail
[23:20:01 CEST] <Compn> photosensitive epilepsy
[23:20:09 CEST] <Compn> not really this is new tech durandal_1707 
[23:21:07 CEST] <JEEB> hmm, I think .jp TV broadcasters have filters for that since the pokemon incident in I think... '98?
[23:27:48 CEST] <Compn> could you do some japanese googling for it ?
[23:28:00 CEST] <durandal_1707> CyberShadow: you are author of this filter?
[23:33:17 CEST] <Compn> i think so yes
[23:40:58 CEST] <Compn> https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1440-1819.2000.00770.x
[23:41:22 CEST] <Compn> https://www.epilepsy.com/connect/forums/products-resources-helpful-links/computer-filters
[23:43:49 CEST] <durandal_1707> there was paper that strictly followed patented algorithm
[23:44:02 CEST] <durandal_1707> not that it is important for us
[23:49:22 CEST] <JEEB> michaelni: bc1749c6e46099ec85110361dbe6f7994a63040d seems to cherry-pick -x cleanly at least up to 2.8, so which releases should it be back-ported to?
[23:54:17 CEST] <Compn> https://journals.lww.com/neurotodayonline/Fulltext/2005/03000/Lessons_From_Pokemon__Video_Games_Without_the.16.aspx
[23:54:23 CEST] <michaelni> JEEB, all up to 2.8 seems a good choice then
[23:55:37 CEST] <JEEB> ok, I will then go wash myself and do a build loop of them
[23:56:07 CEST] <JEEB> although the primary thing that seems to be utilizing whatever causes a re-negotiation seems to mostly be facebook for one reason or another :)
[00:00:00 CEST] --- Fri Jul 12 2019