[Ffmpeg-devel-irc] ffmpeg.log.20160725

[burek]

[00:32:25 CEST] <torula> does anyone know how to use timeout with ffmpeg?
[00:32:29 CEST] <torula> it just hangs for me.
[00:32:36 CEST] <torula> $ timeout 5s ffmpeg ....
[00:33:03 CEST] <torula> sometimes my ffmpeg command to generate a poster hangs and won't exit. so i just want to timeout and kill the process if that happens.
[11:20:05 CEST] <k_sze[work]> source.ffmpeg.org (albiero.videolan.org) is down?
[11:25:57 CEST] <JEEB> k_sze[work]: yes
[11:26:03 CEST] <JEEB> thresh from videolan was upgrading it last night
[11:26:06 CEST] <JEEB> it... failed :P
[11:26:14 CEST] <k_sze[work]> oh noes
[11:26:55 CEST] <JEEB> well, they're working on fixing it
[11:27:02 CEST] <JEEB> use the github mirror if you require it
[12:22:42 CEST] <sagax> hi all!
[12:22:53 CEST] <sagax> how to change output device for ffplay?
[13:48:00 CEST] <osiris> hi all
[13:48:42 CEST] <osiris> is there anywhere a solution for never kernel then 3.14.5 with intel quick sync? they have to be kidding
[14:12:45 CEST] <Guest_83746> Allah is doing
[14:12:53 CEST] <Guest_83746> sun is not doing Allah is doing
[14:12:54 CEST] <__jack__> again ?!
[14:16:12 CEST] <iive> should i ban him?
[14:16:24 CEST] <sagax> how to change output device for ffplay?
[14:17:49 CEST] <__jack__> iive: you can
[14:18:01 CEST] <__jack__> that crap robot spammed us on #btrfs
[14:18:26 CEST] <__jack__> saying wild stuff, like "dollars are alive, they are allah or whatever"
[14:19:02 CEST] <iive> __jack__: and recommendations for the ban regex? aka, should I ban all web gateways?
[14:20:02 CEST] <__jack__> they said it is using dynamic IP, already tried to ban him, didn't work, I don't really know how is the right way
[14:20:59 CEST] <durandal_1707> just kick?
[14:22:39 CEST] <iive> the IP seems to be from pakistan, I guess i'll just block web irc for the whole range
[14:22:55 CEST] <bencoh> :/
[14:23:33 CEST] <osiris> do u think its smart to announce how u do it even if he is still able to read it?
[14:24:44 CEST] <furq> do you not think it would be a good idea to kick him as well
[14:24:54 CEST] <iive> i don't mind blocking all gateways...
[14:32:38 CEST] <samb1> hi I've got the latest checkout of the ffmpeg git, I ran ./configure --enable-libmp3lame --enable-avresample --enable-shared  and got ERROR: libmp3lame >= 3.98.3 not found , however I have 3.99 installed (am on ubuntu precise)
[14:33:08 CEST] <osiris> also the -dev package?
[14:33:14 CEST] <samb1> ahh
[14:33:58 CEST] <samb1> thanks :) that fixed it
[14:34:17 CEST] <osiris> no worries
[14:35:25 CEST] <osiris> samb1: did u run apt-get build-dep ffmpeg?
[14:35:42 CEST] <osiris> that should have installed everything as needed
[14:35:57 CEST] <furq> on debian/ubuntu that'll build the libav*-dev packages, which you probably don't want
[14:36:04 CEST] <furq> s/build/install/
[14:36:30 CEST] <furq> as well as all the external libraries that the debian ffmpeg package uses, which you probably also don't want
[14:37:06 CEST] <osiris> so u build every dependency from source?
[14:37:37 CEST] <furq> you definitely don't want system libav*-dev packages installed if you're building with --enable-shared because it could cause linker issues
[14:37:37 CEST] <samb1> osiris: no I checked out the ffmpeg git repo with the aim of building the whole thing from source because a few things are out of date on ubuntu precise
[14:37:53 CEST] <furq> for external libraries i just install the dev packages i want from apt
[14:37:58 CEST] <samb1> just confused a bit between which things were deps and which things I was building I think
[14:38:29 CEST] <osiris> yeah, i stumbled over that old shit as well, but i dont get quick sync working anyways with a needed centos 7.1 or kernel < 3.15
[14:39:34 CEST] <osiris> dont get why intel is lacking so much support on that gr8 feature
[14:39:49 CEST] <samb1> I wanted a lot of the newer libraries because I'm working with this essentia thing (see http://essentia.upf.edu/ ) and it has certain version requirements for theextractors
[14:40:18 CEST] <samb1> so eh building the stuff fixed a lot of things ... maybe a lot of what am currently doing is superfluous tho
[14:41:32 CEST] <osiris> samb1: looks like most is not needed, if your just going for audio ;)
[14:41:49 CEST] <osiris> there is really a reason, why i mostly use arch in the meanwhile
[14:42:07 CEST] <samb1> yeh those tags I put in the configure should get me what I want but sure it makes a whole load of other stuff too, the build takes ages
[14:42:20 CEST] <furq> it'll take longer to go through and figure out what you don't need than it will to just compile it all
[14:42:28 CEST] <samb1> yeh probs
[14:42:33 CEST] <furq> also don't forget to run make -j
[14:42:49 CEST] <osiris> yeah, -j is the key
[14:43:17 CEST] <osiris> only make uses just one core
[14:43:37 CEST] <samb1> not used the j option... I must be missing out
[14:44:12 CEST] <osiris> furq: how u get a complete list of the denpendcies to install them manually? i was just getting one dependency after the other
[14:44:17 CEST] <osiris> what took me ages
[14:44:50 CEST] <osiris> samb1: then cancel and do  make clean && make -j 8
[14:44:59 CEST] <furq> you don't need to make clean
[14:45:04 CEST] <furq> make -j8 will pick up where the previous make left off
[14:45:13 CEST] <furq> or -j4 or whatever
[14:45:50 CEST] <furq> i've never had a hard time finding deps but i usually don't build with many
[14:46:22 CEST] <furq> except for mingw, and i have a script which does all that for me
[14:48:03 CEST] <samb1> it had compelted but yeh that's faster
[14:48:08 CEST] <samb1> completed
[15:56:48 CEST] <Kadigan_KSB> Hey all. I was wondering -- I have a spherical video clip (square video frame containing spherical content). Can I use ffmpeg to convert it to equirectangular video?
[15:58:32 CEST] <Kadigan_KSB> (this would happen, I assume, by unwrapping and then stretching the video)
[15:59:12 CEST] <Kadigan_KSB> When I process the video in the designated app for it (360fly Director), I input 1504x1504 video files and receive 2560x1280 files. However, the app in question cannot do (or I do not know how to do) batch encodes.
[16:13:38 CEST] <bencoh> Kadigan_KSB: lenscorrection filter, maybe?
[16:17:11 CEST] <durandal_1707> Kadigan_KSB: see panorama filter on ml archives
[16:18:45 CEST] <Kadigan_KSB> Okay, I'll check it out.
[22:18:35 CEST] <yuken> Is there any way to use a graphics card (more specifically, an nVidia GPU - 750Ti) to accelerate compression/encoding with libx264 or libx265? Under Windows.
[22:19:53 CEST] <durandal_1707> no
[22:21:00 CEST] <iive> libx264 support look-ahead pass using opencl, so any recent card could use it.
[22:21:42 CEST] <iive> it doesn't provide significant speed up and it kind of lowers quality a bit.
[22:22:30 CEST] <flux> does it even reduce CPU load?
[22:23:50 CEST] <iive> I do suspect that you might be interested in hardware encoder present in new cards, this however does not involve libx264/5 at all. it's done enitrely by the driver/hardware.
[22:24:26 CEST] <yuken> iive, do you mean NVENC and VCE?
[22:24:50 CEST] <iive> yeh... probably :)
[22:25:06 CEST] <yuken> Videos are way too large with the former, can't use the latter as my card is nVidia.
[22:27:58 CEST] <furq> there's also qsv on any recent intel cpu, but it suffers from the same problem as nvenc
[22:28:08 CEST] <furq> which is the problem of being a rubbish h.264 encoder
[22:36:08 CEST] <JEEB> well the use cases are somewhat different
[22:37:07 CEST] <JEEB> software transcoders tend to aim for high compression as well as try to optimize themselves as much as possible for CPUs, while the pre-built encoding chips are aimed for low-latency and keeping at least realtime if not much more with... some sort of compression
[22:37:29 CEST] <JEEB> for example nvidia's private APIs for screen capture are quite useful (too bad they are private)
[22:46:37 CEST] <Mavrik> *sigh*
[22:46:44 CEST] Action: Mavrik found himself in need of a fast JPEG2000 decoder.
[22:47:55 CEST] <JEEB> rip
[22:48:04 CEST] <durandal_1707> ffmpeg one is fast if you have bunch of CPUs
[22:48:28 CEST] <JEEB> I had fun when transcoding the tears of steel master on a quad core
[22:48:36 CEST] <JEEB> (actual 4K)
[22:53:08 CEST] <cbsrobot> Mavrik: did you try http://grokimagecompression.github.io/grok/ ?
[22:53:46 CEST] <Mavrik> durandal_1707, yeah, I have mobile CPUs :P
[22:53:51 CEST] <Mavrik> cbsrobot, nop, never heard of it
[22:54:07 CEST] <Mavrik> Oh, AGPL :D
[23:01:01 CEST] <Ryfi> anyone know why my ffmpeg instance will continuously use more and more cpu until it's restarted? http://pastebin.com/LjspfUbC
[23:03:58 CEST] <Ryfi> chttp://puu.sh/qeg9W/8529b8a5b5.png
[23:08:06 CEST] <durandal_1707> Ryfi: does it happen without loudnorm?
[23:11:43 CEST] <Ryfi> ill let you know
[23:21:17 CEST] <Ryfi> seems that loudnorm is the culprit, which is unfortunate since that's the whole reason why im using ffmpeg .. ugh lol
[23:25:29 CEST] <durandal_1707> Ryfi: could you open bug report?
[23:26:04 CEST] <Ryfi> actually i think im wrong
[23:26:18 CEST] <Ryfi> its still increasing slowly.. its really slow so its hard to tell unless i wait
[23:27:41 CEST] <Ryfi> http://puu.sh/qehQw/9f1eaa706b.png
[23:51:53 CEST] <Ryfi> submitted: https://trac.ffmpeg.org/ticket/5735
[00:00:00 CEST] --- Tue Jul 26 2016