[Ffmpeg-devel-irc] ffmpeg.log.20130914

[burek]

[00:07] <reuf> how can i reduce mp3 file size?
[00:08] <relaxed> reuf: set -b:a $bitrate
[00:09] <relaxed> you could also lower the sample rate with-r:a
[01:34] <chrisballinger> hi im having trouble compiling ffmpeg against the iOS 7.0 SDK with a script that worked fine for the 6.1 SDK. it looks like the configure script is crapping out on one of the tests
[01:35] <iive> we require more minerals^W details
[01:35] <chrisballinger>   /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc is unable to create an executable file.
[01:35] <chrisballinger> C compiler test failed.
[01:35] <chrisballinger> so i looked in the config.log file
[01:36] <chrisballinger> its a big mess so its kind of hard to find exactly which thing is failing
[01:39] <impy_> how about pastebin the log file
[01:41] <chrisballinger> oh good idea
[01:46] <impy> also... you are on 10.9 right? Have you install the command line tools from xcode5?
[01:48] <chrisballinger> im on 10.8.5 w/ Xcode 5 + command line tools
[01:54] <chrisballinger> omg i think i fixed it
[01:56] <chrisballinger> apple changed the location of gcc
[01:57] <Plorkyeran> Xcode 5 just outright doesn't have gcc
[01:57] <Plorkyeran> it just has some links to clang
[01:58] <impy> xcode 5 has llvm-gcc no?
[01:58] <Plorkyeran> no
[01:58] <Plorkyeran> it was finally dropped entirely
[02:01] <chrisballinger> yeah but they still have a file called gcc
[02:01] <chrisballinger> that is just clang :)
[02:02] <impy>  thats going to create problems...
[02:09] <Plorkyeran> not really
[02:10] <Plorkyeran> you'd have to be doing things very wrong for it to be a problem when not gcc at all isn't already a problem
[05:39] <d3_> Hi, can somebody help me? I need convert mp3 file to aac v2
[05:40] <d3_> (With debian in console)
[05:40] <d3_> Ive tryed multiple forms and i cant make it work.
[05:41] <klaxa> if you run debian, you are probably using avconv and not ffmpeg
[05:41] <d3_> for example i try ffmpeg -i Peligro.mp3 -acodec libfaac -ab 128k -ar 44000 -ac 2 -y Peligro.aac and get Unknown encoder 'libfaac'... I have installed on my sistem libfaac
[05:42] <klaxa> the recommended encoder for aac is libfdk-aac
[05:42] <d3_> klaxa: the only way to make it work is compiling it?
[05:42] <d3_> root at ks3311367:~# apt-cache search libfdk-aac root at ks3311367:~#
[05:43] <klaxa> maybe?
[05:43] <klaxa> i'm not sure, let me check on my debian install
[05:43] <klaxa> hmm yes i compiled from source
[05:44] <d3_> Damnt it :p
[05:44] <d3_> i will try compiling it xD
[05:45] <d3_> klaxa:  can you get me the official page?
[05:46] <klaxa> http://sourceforge.net/projects/opencore-amr/files/
[05:46] <klaxa> it's linked on wikipedia, so i guess it's pretty official
[06:09] <d3_> klaxa:  i compiling it.
[06:09] <d3_> How i use it? -acodec libfdk-aac ?
[06:09] <klaxa> i think
[06:09] <klaxa> you probably need to compile ffmpeg too
[06:10] <d3_> aGE
[06:10] <d3_> xDD
[08:09] <kriskropd> i want to trim a video from 5 seconds in until the end (cutting out an intro) 'ffmpeg -vsync 2 -ss 5 -t DURATION-END -i input.mp4 output.mp4'
[08:09] <kriskropd> is there a shorthand signal for DURATION-END, or am i best off making a variable that pulls the duration from each video file?
[08:13] <relaxed> kriskropd: ffmpeg -ss $time -i input -to $end_duration ...
[08:16] <kriskropd> so, I have to set a variable?
[08:16] <relaxed> no
[08:19] <kriskropd> relaxed: I keep getting 'Invalid duration specification for to: ' for either -t or -to \
[08:28] <relaxed> command?
[08:33] <kriskropd> ffmpeg -ss 5 -i "$i" -to "$end_duration" "${i//.mp4/.fixed.mp4}"
[08:33] <kriskropd> also I couldn't find the $end_duration variable thing anywhere
[08:34] <relaxed> it's not, I was just usingit so you would know to put the end duration there.
[08:35] <kriskropd> ... I'm looking for a shorthand though, these video fiels vary in length
[08:35] <kriskropd> files*
[08:35] <kriskropd> I though ffmpeg might have something built in to denote the end duration automatically
[08:35] <relaxed> replace $end_duration with --> "$(ffprobe -show_format "$i" 2>&1|awk '/^dur/ { gsub(/.*=/, ""); print $0 }')"
[08:35] <kriskropd> guess I have to set a variable afterall
[08:36] <kriskropd> that's pretty much the same thing ._. ty though
[08:40] <relaxed> that should work in your for i loop
[08:40] <kriskropd> it does, thanks
[08:41] <kriskropd> I was hoping to find something built in though that I could easily re-use in the future
[08:41] <kriskropd> but this will have to do :/
[08:41] <relaxed> you can easily reuse that for i script
[08:41] <kriskropd> sorry, by re-use I mean, remember in my head at the spur of a moment
[08:43] <relaxed> well, if you're using multiple inputs how would it know which end to use? Or different streams in the same input.
[08:43] <kriskropd> relaxed: if I were building it into ffmpeg, I would numerically denote which input by the chronological order placed in the script
[08:44] <kriskropd> input file one would be $end_duration_1 - for instance
[08:44] <kriskropd> but I get your point, that could be frustrating
[08:47] <relaxed> something like "-to:0:v:1 $end" would work (similar to mapping streams)
[08:47] <kriskropd> hm, I seem to get this error when I used the ffprobe solution above 'Invalid duration specification for to: 38.720000'
[08:47] <kriskropd> it's pulling the duration correctly, but i guess ffmpeg doesn't like the format
[08:48] <kriskropd> ah, nvm
[08:48] <kriskropd> removing the quotes helped
[09:15] <slick0_> is there an ffmpeg based media player?
[13:04] <CentRookie> Hello all!
[13:05] <CentRookie> I would like to ask sometimes in the videos I see a rare image artefact, it looks like a huge block of the image was too slow and didn't update correctly.
[13:06] <CentRookie> Could anybody say if this is related to a too low bitrate, or low bf or ref setting?
[13:06] <durandal_1707> i'm not fond of guessing
[13:07] <CentRookie> neither am i, which is why I'm asking if anyone had experience with that kind of image artefact.
[13:07] <CentRookie> the thing is, the rest of the image is top quality and very clear
[13:08] <durandal_1707> give more cookies
[13:08] <CentRookie> alright, let me post the mediainfo
[13:11] <CentRookie> http://pastebin.com/VFVNvGqF
[13:19] <CentRookie> I suspect it has to do with the maxbuffer
[13:20] <CentRookie> might have to increase that part when doing streaming
[14:39] <BallsDeep> When you have a raw pcm, how the hell do you know the "sampling rate" and "bits per sample" (AKA: "bit depth")? I'm trying to convert this raw pcm file into a wav file and I forgot what the "sampling rate" and "bits per sample" were when I created the pcm file from a  DTS 5.1 file. Is there some sort of utility out there that can view this information when it comes to raw pcm files? A pcm hex editor (LOL!)?
[14:40] <durandal_1707> no, use your ears
[14:40] <BallsDeep> so the hearing test is the way to go?
[14:40] <BallsDeep> when i hear static, i'll know
[14:41] <JEEB> yeah, raw pcm is just that
[14:41] <JEEB> raw data
[14:41] <BallsDeep> alright, thanks
[15:05] <slick0_> BS
[15:55] <holgersson> Hi guys
[15:56] <holgersson> I don't get the example ffserver configs I find on the net. Could s.o. of you be so kind and paste me one? :)
[15:57] <Mavrik> what makes you think you'd "get" that one?
[16:00] <holgersson> Mavrik: The hope of coincidence
[16:01] <holgersson> Mavrik: Maybe some configured an ffserver for simple streaming and might just paste it.
[16:14] <holgersson> Well: First I don't really understand the concept
[16:14] <holgersson> I run ffserver as a streaming server and run ffmpeg to feed it?
[19:25] <Nahiyan> anyone here?
[19:25] <Nahiyan> Hello?
[19:26] <Nahiyan> I was wondering, on youtube, 720p looks clearer (as expected) but also brighter
[19:26] <Nahiyan> is there a reason for that?
[19:33] <intracube> I'm trying to encode an image sequence rendered to 50fps as an interlaced SD h264 video: http://pastebin.com/99taXXtC
[19:33] <intracube> I tried setting the x264opts interlaced option, but it's having no effect
[19:34] <intracube> also tried variants like interlaced=1:tff=1 etc
[19:34] <intracube> anyone know how to force interlaced encoding mode?
[19:35] <Nahiyan> intracube, this seems like a dead channel
[19:35] <Nahiyan> it is just you and I
[19:35] <Nahiyan> WE ARE THE LAST ALIVE
[19:36] <intracube> lol - I'll give it a few mins to see if anyone comes out of the shadows :D
[19:36] <Nahiyan> I gave it 10
[19:36] <intracube> 217, users. 1 has got to be a x264 guru
[19:36] <intracube> Nahiyan: what was your problem?
[19:37] <Nahiyan> I once highlighted everyone in a channel because nobody was replying.. lol..
[19:37] <Nahiyan> intracube, just was asking about why 720p looks brighter than 360p
[19:37] <Nahiyan> on youtube
[19:37] <Nahiyan> it's probably off-topic, but this looks like my best bet
[19:37] <intracube> Nahiyan: highlighting everyone will probably get you thrown out pretty quick!
[19:37] <Nahiyan> intracube, that's exactly what happened..
[19:38] <intracube> Nahiyan: possibly because of the way your graphics card is handling the video playback (overlay)
[19:38] <sacarasc> Nahiyan: Clearer than what?
[19:38] <Nahiyan> omg there's someone else!
[19:38] <intracube> flash is known for getting it wrong (I assume you're using Flash not HTML5)?
[19:38] <Nahiyan> intracube, HTML5
[19:38] <intracube> Nahiyan: ^
[19:39] <Nahiyan> sacarasc, 720p is clearer than 360p, as expected
[19:39] <Nahiyan> but 720p is brighter as well!
[19:39] <sacarasc> Than what?
[19:39] <intracube> hmm. I was going to suggest right clicking on video->Settings->disable HW acceleration
[19:39] <sacarasc> Oh, than the same site.
[19:39] <sacarasc> Ask YouTube what they do.
[19:39] <intracube> but that only works for flash
[19:40] <intracube> Nahiyan: try a different browser and Flash
[19:40] <Nahiyan> hmm
[19:40] <Nahiyan> intracube, I'm too lazy
[19:41] <Nahiyan> well, thanks anyways
[19:41] <intracube> almost certainly a browser/system/playback issue
[19:41] <intracube> np
[19:42] <Nahiyan> chromium on linux with HTML5
[19:42] <intracube> unless you've got youtube set up to adjust/tweak the video when you upload
[19:42] <intracube> I always say no to that
[19:43] <intracube> Nahiyan: when uploading - "We detected ways to improve your videos lighting. Would you like us to enhance it?"
[19:43] <intracube> might be the culprit
[19:43] <Nahiyan> mm
[21:16] <t4nk730> hi guys i would like to know why when i restream an hls to rtmp , its cuting? is there anyway to fix this ?
[21:19] <t4nk730> help?
[21:20] <t4nk730> hi guys i would like to know why when i restream an hls to rtmp , its cuting? is there anyway to fix this ?????
[21:31] <t4nk730>  hi guys i would like to know why when i restream an hls to rtmp , its cuting? is there anyway to fix this ?????
[22:16] <Lyude> So I'm having an issue when it comes to streaming with ffmpeg. I have a complex filter setup so that I can overlay my webcam with the input coming from x11grab, and it works except for the fact that most of the time my webcam's video seems to be pretty much frozen
[22:16] <Lyude> Occasionally I can start up ffmpeg and get it to work, but it's still unstable, and this behavior doesn't seem to be predictable
[23:52] <chrisballinger> i noticed a bug in the make script i think
[23:52] <chrisballinger> that breaks "make clean"
[23:54] <chrisballinger> when you build for one architecture with configure, make, make install, make clean, and then run configure again in the same directory and do make, make install, make clean, the second make clean fails on a rm of the file named "-.d" in the root source directory
[23:54] <chrisballinger> "-.d" contains this without the quotes "-: libavcodec/arm/vp8dsp_neon.S libavutil/arm/asm.S config.h \
[23:54] <chrisballinger>   libavcodec/arm/neon.S"
[23:55] <relaxed> file a bug report with an easy way to reproduce it
[23:55] <relaxed> http://www.ffmpeg.org/bugreports.html
[23:56] <chrisballinger> i wasnt able to make an account on trac
[23:56] <chrisballinger> the page would just hang when submitting a new account
[23:56] <chrisballinger> ill try again today
[23:57] <relaxed> pastebin the steps to reproduce and the error output. I'll post it if you can't.
[23:58] <chrisballinger> it also doesn't build for 64-bit ARM processors with ASM enabled
[23:58] <relaxed> did you look at http://fate.ffmpeg.org/ ?
[23:59] <chrisballinger> hmmmm is that where im supposed to report broken builds for specific architectures?
[00:00] --- Sun Sep 15 2013