[Ffmpeg-devel-irc] ffmpeg.log.20131216

burek burek021 at gmail.com
Tue Dec 17 02:05:01 CET 2013

[00:08] <relaxed> farsheed: you'll have to compile ffmpeg yourself for that support.
[00:08] <relaxed> https://trac.ffmpeg.org/wiki/UbuntuCompilationGuide
[04:13] <hailwood> Hi guys, I am executing a command and the output directory is chmodded to 777, and idea why when running the command I would be getting a permission denied error?
[04:16] <hailwood> here is the actual command: http://pastebin.com/Ae6BqXpW
[04:19] <relaxed> first of all, what version of ffmpeg is this?
[04:41] <Compn> run it as root :P
[04:59] <liam-kelly> I am having some issues setting up ffserver, with ffmpeg as the source, http://pastebin.com/sD3Gnvq1. I have also been following the tutorial here https://trac.ffmpeg.org/wiki/Streaming%20media%20with%20ffserver
[04:59] <liam-kelly> What am I missing?
[05:30] <braincracker> hi
[05:30] <braincracker> i should compile something, because my psu exhales cold water
[10:42] <XwZ> hi, I try to open a camera with libav, it's working with ffmpeg -i /dev/video0 but I don't know how to open it with avformat_open_input, if I open it directly, I get a segfault and if I set as input file "video=Camera name" I get the error -20
[10:44] <XwZ> then how can I open it ?
[10:47] <relaxed> XwZ: https://trac.ffmpeg.org/wiki/How%20to%20capture%20a%20webcam%20input
[10:49] <XwZ> relaxed: thank you I want to use it in my software, with avformat_open_input not with the ffmpeg command, I already did.
[10:50] <relaxed> oh, can't help you there
[10:51] <relaxed> see how ffmpeg does it
[10:51] <XwZ> yes it was my idea I will look at it
[10:52] <XwZ> but find the doc is better than reverse engeneering for me
[11:40] <benbro1> I'm trying to create a video from images with
[11:40] <benbro1> ./ffmpeg -r 25 -i frames/frame%d.png -c:v libx264 -r 25 -pix_fmt yuv420p out.mp4
[11:40] <benbro1> getting an error: Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
[11:44] <relaxed> add -f image2 before the input
[11:46] <benbro1> ./ffmpeg -r 25 -f image2 -i frames/frame%d.png -c:v libx264 -r 25 -pix_fmt yuv420p out.mp4 ?
[11:47] <relaxed> yes
[11:47] <relaxed> how are the images named?
[11:47] <benbro1> frame1.png, frame2.png.... frame10.png...
[11:47] <benbro1> better to use frame0001.png ?
[11:48] <relaxed> frame%d.png should work
[11:48] <relaxed> or, ./ffmpeg -r 25 -f image2 -pattern_type glob -i frames/*png ...
[11:50] <benbro1> ok. tahnks
[11:50] <benbro1> thanks
[11:58] <benbro1> relaxed: the image width was 1069. when I use 1070 I don't see the error
[11:59] <relaxed> by padding it?
[11:59] <benbro1> yes
[11:59] <benbro1> no, sorry
[12:00] <benbro1> I was taking a screenshot so I just take it with 1 more pixel
[12:00] <relaxed> that works too
[12:00] <benbro1> what's wrong with 1069?
[12:00] <relaxed> it's not /2
[12:01] <benbro1> ok
[12:01] <benbro1> in avidemux I'm getting "Index is not up to date"
[12:01] <benbro1> I was trying with and without "-movflags faststart"
[12:01] <relaxed> command?
[12:02] <benbro1> ./ffmpeg -r 25 -i frames/frame%d.png -c:v libx264 -r 25 -pix_fmt yuv420p -movflags faststart out.mp4
[12:02] <benbro1> I can paste the full output if needed
[12:02] <relaxed> is it?  -movflags +faststart
[12:03] <benbro1> trying
[12:04] <benbro1> same index issue
[19:32] <ufa> hello :)
[19:33] <ufa> I want to dump audio from a mkv chaptered file into multiple mp3 files
[19:33] <ufa> Is it possible?
[21:22] <Zeranoe> I have a device that plays avi files, mjpeg and adpcm_ima_wav. I'm trying to match the sample avi the device came with, but everything I encode with ffmpeg results in a format error. Is there something like baseline for mjpeg? I don't know how to make it more compatible.
[22:20] <DeadSix27> what option would prevent video feels from having "giant seek positions" ?
[22:20] <DeadSix27> files*
[22:20] <DeadSix27> i often have files that can only seek between 5secs.. instead of every sek or less
[00:00] --- Tue Dec 17 2013

More information about the Ffmpeg-devel-irc mailing list