[Ffmpeg-devel-irc] ffmpeg.log.20150802

burek burek021 at gmail.com
Mon Aug 3 02:05:01 CEST 2015

[02:28:35 CEST] <swift110> hello all
[02:28:55 CEST] <swift110> I am trying to convert a file from 3gp to .flac how do I do that
[02:29:01 CEST] <swift110> I have linux mint 17.2 btw
[02:29:09 CEST] <c_14> ffmpeg -i file.3gp out.flac
[02:30:39 CEST] <swift110> thanls
[02:31:21 CEST] <swift110> linux mint used avconv can i just substitute that for ffmpeg
[02:31:25 CEST] <swift110> ?
[02:32:57 CEST] <swift110> http://dpaste.com/3XNBNN1
[02:33:13 CEST] <c_14> You'll probably want to dl a static build from
[02:33:17 CEST] <c_14> http://johnvansickle.com/ffmpeg/
[02:33:33 CEST] <c_14> Though avconv should also work for you (support for avconv is in #libav though)
[02:33:58 CEST] <swift110> ok thanks
[02:52:26 CEST] <Pursuit> I'm writing a small script that runs an ffmpeg command and logs its output to a file. I'm getting hundreds of these entries: http://paste.fedoraproject.org/250625/38476657/
[02:52:46 CEST] <Pursuit> I'd like to make it only output the startup/shutdown messages and any errors encountered
[02:55:05 CEST] <c_14> -loglevel error
[02:57:54 CEST] <Pursuit> c_14: Hmm, that makes it output nothing... is there no in-between?
[02:58:22 CEST] <c_14> you can try warning
[02:58:31 CEST] <c_14> default is info
[03:02:06 CEST] <Pursuit> alright, no logs it is then! at least by default. that's what configs are for ;)
[03:31:56 CEST] <well0ne> sup everyone
[04:29:47 CEST] <pgimeno> does ffmpeg support any raw video+audio format? e.g. raw .dv?
[04:33:55 CEST] <relaxed> pgimeno: yes
[04:42:38 CEST] <pgimeno> relaxed? thanks, what formats does it support and how do I select them?
[04:55:49 CEST] <relaxed> pgimeno: what are you doing?
[05:06:25 CEST] <relaxed> ffmpeg -i input output.dv
[07:01:45 CEST] <aptwebapps> As I understand it, -vcodec copy does not do any encoding. Is there a way to re-encode, but to extract the parameters/codec from the file?
[07:02:00 CEST] <aptwebapps> Or more to the point, from one of the files when combining multiple files?
[07:02:40 CEST] <aptwebapps> Or do I have to do my homework and figure out what parameters to specify to reproduce the desired encoding?
[07:04:02 CEST] <aptwebapps> If that's not clear enough, I have three mp4s I want to combine into one. The first one has a slightly different encoding than the other two. They were not encoded by ffmpeg in the first place, AFAIK. (Youtube)
[07:26:14 CEST] <pgimeno> relaxed: sorry, I tried that but got this error: "Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height"
[07:27:30 CEST] <pgimeno> I also tried -vcodec rawvideo, to no avail
[07:28:26 CEST] <relaxed> pgimeno: try, ffmpeg -i input -target dv output.dv
[07:29:24 CEST] <pgimeno> ok, -target pal-dv seems to work, thanks!
[07:29:50 CEST] <pgimeno> (got an error that I neeed to specify pal-, ntsc- or film- so I did)
[07:51:55 CEST] <CitizenJane> I need to determine the GOP structure of a mp4 video I have
[07:52:00 CEST] <CitizenJane> is there a command for this?
[08:05:40 CEST] <pgimeno> thanks again
[09:51:22 CEST] <xerox> anybody had success with brew install ffmpeg --with-ffplay on osx? it does not seem to install ffplay at all
[10:32:51 CEST] <spaam> xerox: did you install sdl?
[10:33:10 CEST] <kvz> Hi. I work for a company that has a big interest in ffmpeg. We heard about Michael's departure and are wondering what we can do to help the project. While there's probably not much in terms of healing that we can do, maybe we can at least make sure there are no other obstacles. We noticed the question about hosting, has that been taken care of already? If not we would like to offer ffmpeg hosting of the project for free.
[10:37:00 CEST] <xerox> spaam: it did install libsdl yes
[10:40:28 CEST] <xerox> I'm going to try to compile it again
[10:42:21 CEST] <xerox> the brew formula does not seem to imply X11 is necessary for it, is it?
[10:43:05 CEST] <xerox> https://github.com/Homebrew/homebrew/blob/master/Library/Formula/ffmpeg.rb
[10:46:11 CEST] <xerox> oh it was PEBKAC, my fault, thanks
[10:49:37 CEST] <michaelni> kvz, hosting _probably_ has been taken care of. We still search for some trusted volunteers to move all services over into some virtualized environments (qemu or whatever) for better isolation/security/future migration ...
[11:00:53 CEST] <kvz> michaelni: Good to hear. I might still be able to help tho with my background. I founded transloadit.com (wanting to sponsor ffmpeg hosting via that entitity) but I was the tech lead of a hosting company for 8 years before that. We could e.g. address those concerns via packer, docker, and terraform. open source tools that I've come to use & love and are imho perfect for better isolation/security/future migrations.
[11:04:57 CEST] <kvz> I'm unsure how far you are, and am certainly not looking to poke in people's solutions or get into fights over picked tech. But if you're still in the early stages and these things sound interesting please feel free to reach out. I owe a lot to ffmpeg and would be willing to return a favor and discuss this further
[11:13:58 CEST] <michaelni> kvz, probably best to contact beastd or just mail root @ ffmpeg, i idont think theres anything very far yet
[11:19:25 CEST] <kvz> michaelni: Will mail root, thanks. And also I want to voice my appreciation for your work these past 14 years. It's humbling, and I hope you'll stick around
[11:27:32 CEST] <harisk92> good morning people
[11:27:38 CEST] <harisk92> i need your help
[11:27:57 CEST] <harisk92> did anyone tried to install ffmpeg with qsv on debian jessie
[11:40:52 CEST] <CitizenJane> I need to determine the GOP structure of a mp4 video I have
[11:41:02 CEST] <CitizenJane> is there a command for this?
[11:54:19 CEST] <CitizenJane> ugh you lousy ingrates! I have a corporate presentation due tomorrow and I have to get it done before my manager complains!
[11:54:41 CEST] <CitizenJane> god? aren't you guys supposed to be here to help people? what kind of product is this
[11:55:16 CEST] <CitizenJane> I NEED AN ANSWER. I've been here for almost FIVE hours now
[11:55:31 CEST] <CitizenJane> HELP ME SOLVE MY VIDEO ISSUE. thanks!
[12:00:57 CEST] <iive> hehehe
[12:01:18 CEST] <iive> your question is quite specific...
[12:01:40 CEST] <JodaZ> CitizenJane, use the showinfo filter maybe? it shows "type:B" "type:P" etc for the individual frames
[12:02:15 CEST] <CitizenJane> Yeah, and that works for mpeg's? How do I use that filter, is there a page on it?
[12:02:40 CEST] <CitizenJane> also, good morning, thanks for waking up, or I dunno, finally deciding to help me
[12:02:59 CEST] <iive> btw, i'd direct you toward ffprobe documentation, it have an option to display frame types and other stuff.
[12:03:01 CEST] <CitizenJane> but yeah, continue
[12:03:21 CEST] <iive> not sure if this would include Group Of Picture information
[12:03:48 CEST] <CitizenJane> Jodaz seems like he can help me but he isn't spilling.
[12:03:51 CEST] <CitizenJane> SPILL
[12:04:07 CEST] Action: CitizenJane throws a chair at Jodaz SPILL so I can be done with this and get some sleep
[12:04:19 CEST] <CitizenJane> please
[12:04:24 CEST] <JodaZ> CitizenJane, you should be able to find an example of how to use showinfo in a ffmpeg commandline yourself >_>
[12:05:26 CEST] <CitizenJane> Oh right, you don't want to save me a few minutes of searching, you'd rather sadistically have me try and fail, then come back here after wasting 30 minutes of scanning the ffmpeg documentation only to have you finally explain it more clearly
[12:05:28 CEST] <JodaZ> ffmpeg -i file.mpg -vf showinfo -an -y test.mp4
[12:05:30 CEST] <CitizenJane> No no silly me
[12:05:46 CEST] <CitizenJane> I'm just being cranky, excuse me for wanting to make my morning easier
[12:05:49 CEST] <JodaZ> tho i am not sure if it works on input or output, hmm
[12:09:40 CEST] <iive> ffprobe -show-frames -i file.mp4
[12:09:48 CEST] <iive> ops.. -show_frames
[12:13:56 CEST] <CitizenJane> precisesly why I ask for an explanation before I search
[12:14:03 CEST] <CitizenJane> this happens all of the time here
[15:27:31 CEST] <Boscop> hi. is ffmpeg the easiest way to create my own visual effects (processing each video frame)?
[19:14:55 CEST] <well0ne> sup'?
[21:11:57 CEST] <Blueeyez> It would be nice if you did show on the donations page how much you have recived in donations.. also maby the expected amount of bills...
[21:23:32 CEST] <durandal_170> Blueeyez: request like this are done on bug tracker otherwise they are ignored
[21:24:27 CEST] <Blueeyez> durandal_170 thanks :)
[23:51:30 CEST] <quux> hi
[23:51:35 CEST] <quux> why is there a fork?
[00:00:00 CEST] --- Mon Aug  3 2015

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