[Ffmpeg-devel-irc] ffmpeg.log.20160514

[burek]

[12:45:26 CEST] <Amitari> I just found out that ffmpeg has added support for IFF-ANIM, which is awesome. I tried to convert an ANIM to GIF, with "ffmpeg -i file.anim file.gif". It worked, however, it wasn't animated. Does anyone know how to use this properly?
[12:49:50 CEST] <durandal_1707> Amitari: old ffmpeg, need master
[12:51:35 CEST] <Amitari> Oh, so earlier versions just had some single-frame conversion of IFF?
[12:54:03 CEST] <iive> durandal_1707: maybe we should add a check of how old is the ffmpeg version.
[12:54:55 CEST] <durandal_1707> iive: sorry can't parse
[12:55:02 CEST] <iive> e.g. after printing the copyright notice, we can print red color message "Your ffmpeg is 1 year old".
[12:55:42 CEST] <furq> can we also license ffmpeg under the wtfpl and then throw a fit when a distro tries to remove the message
[12:56:38 CEST] <iive> Is wtfpl a thing? It should be!
[12:56:55 CEST] <furq> yes it is
[12:56:57 CEST] <furq> please don't use it
[12:59:06 CEST] <durandal_1707> why? It's best one.
[13:00:28 CEST] <furq> it's not a real license and will more than likely prevent companies from using your software
[13:01:03 CEST] <Mavrik> Or anyone with a bit of brain :P
[13:01:08 CEST] <iive> no warranty disclaimer.
[13:01:19 CEST] <furq> also i've seen at least three instances now of someone throwing a fit because someone did what the fuck they wanted to with wtfpl-licensed code
[13:01:43 CEST] <furq> actually two, because one was just baseless accusasions of plagiarism of wtfpl-licensed code
[13:02:52 CEST] <furq> er. accusations
[13:12:14 CEST] <durandal_1707> name it?
[13:15:09 CEST] <furq> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=819703
[13:15:21 CEST] <furq> that was the most high-profile one
[16:40:25 CEST] <anjum> I cloned and built ffmpeg on Debian, but I cannot use the VPx codec (for converting to webm). I downloaded and extracted libvpx-1.5.0.tar.bz2 to a folder in my sources directory, tried to run configure --enable-libvpx, but it warns 'libvpx decoder version must be >=0.9.'
[16:41:34 CEST] <__jack__> anjum: simple solution: install from Debian repositories
[16:43:31 CEST] <anjum> I will try that again.
[16:46:00 CEST] <anjum> I tried to do apt-get install ffmpeg earlier, but it couldn't find the package.
[16:56:20 CEST] <__jack__> anjum: use the unstable repo
[17:02:01 CEST] <anjum> It's installing now, seems promising.
[17:07:58 CEST] <anjum> It works, thank you.
[17:46:10 CEST] <Zaoshi> Hello. I'm trying to extract image from .mkv file. When I use "ffmpeg -y -ss TIME -i MY_FILE -copyts -vframes 1 OUT_FILE" it's instant, but if I add subtitles ("ffmpeg -y -ss TIME -i MY_FILE -copyts -vf "subtitles=MY_FILE" -vframes 1 OUT_FILE") it takes a very long time to generate image. Is there any way to make it faster?
[18:05:36 CEST] <Zaoshi> Hm... Apparently extracting subtitles before hand makes it instant as well. Why does it take so much more time to read subtitles while rending image than it takes to extract subtitles + render image separately?
[18:38:06 CEST] <thebombzen> Zaoshi: the subtitles filter doesn't work well with -ss
[18:39:05 CEST] <thebombzen> my best guess is that when you started using subtitles, it went to slow decoding.
[18:39:36 CEST] <thebombzen> my recommendation for a single frame is to extract the frame and just put the subs on manually with something like GIMP unless they're fancy or complicated
[18:39:54 CEST] <thebombzen> because of the problem you just stated.
[18:40:49 CEST] <thebombzen> I mean, in an ideal would you wouldn't have to do ffmpeg -i input.mkv -vf subtitles=video.mkv. In an ideal world you could do that with -filter_complex, i.e. ffmpeg -i input.mkv -filter_complex rendersubtitles or something like that.
[18:40:59 CEST] <thebombzen> Unforutunately FFmpeg doesn't support that yet
[19:02:01 CEST] <Zaoshi> Alright. Thanks for the info. For now I'll just extract subtitles into separate file and use it as 2nd source. Solves the issue but takes a bit time to extract subtitles.
[21:18:50 CEST] <ElAngelo> if you compare ffmpeg today with ffmpeg 2 years ago... what would be the greatest changes/improvements?
[21:31:04 CEST] <klaxa> aac encoder?
[21:33:05 CEST] <kid195> afternoon all
[21:35:30 CEST] <kid195> anybody home ?
[21:43:24 CEST] <durandal_1707> disco party
[21:50:00 CEST] <DHE> this Alf marathon isn't going to watch itself
[21:54:03 CEST] <ElAngelo> any of you know how one would proceed to use ffmpeg and be completely save legally?
[21:54:08 CEST] <ElAngelo> safe
[21:54:32 CEST] <klaxa> you use it
[21:54:37 CEST] <klaxa> and you don't go to jail
[21:54:51 CEST] <klaxa> if you want to ask licensing questions you need to be a lot more specific
[21:57:53 CEST] <kid195> anybody know how I can play videos like live tv using ffmpeg with red5 ?
[21:58:17 CEST] <kid195> ffmpeg -re -i /usr/local/red5/webapps/oflaDemo/streams/Avengers2.mp4 -f mp4 rtmp://localhost/oflaDemo/livestream1 i was working with that for a test, but no luck
[21:58:37 CEST] <kid195> i got input/output error
[21:58:50 CEST] <ElAngelo> nevermind just read te whole licensing and legal thingy
[21:58:54 CEST] <ElAngelo> it's quite clear :)
[22:04:51 CEST] <kid195> anyone here ??
[22:27:45 CEST] <twak54> hi
[23:18:02 CEST] <tab1293> So I am trying to use the webm_dash_manifest format to generate a mpd file for some webm_chunks
[23:20:50 CEST] <tab1293> anyone @here?
[00:00:00 CEST] --- Sun May 15 2016