[Ffmpeg-devel-irc] ffmpeg.log.20130921

[burek]

[00:10] <undercash> hello
[00:12] <undercash> i have a little question..  i m a broadcaster on justin and everything is going well.. but they are moving to hsl and it state the following http://gyazo.com/2b468c9fe6f5c32eb4007c85dad7e73c.png
[00:12] <undercash> so since my stream is perfectly compatible h264/aac.. it seems their servers don't recognize the information contained in the stream
[00:13] <undercash> is it something that a newer version of ffmpeg will fix , or currently an issue?
[01:13] <undercash> well well well.. sleeping deep here :D
[02:07] <chrisballinger> hey everyone!
[02:14] <chrisballinger> when I open up an AVFormatContext for an output file that doesn't exist yet, what do I need to do so pb (AVIOContext) is properly initialized?
[02:47] <undercash> :Z
[04:32] <Keshl> Okay, so, I have TV shows I've recorded and I want to edit the commercials out. How can I do this using only ffmpeg? Is there a way to specify -ss and -t multiple times?
[05:06] <relaxed> rcombs: For issues like this I belive the devs want you to file a bug report with proof.
[05:07] <relaxed> believe*
[05:11] <relaxed> leandrosansilva: create a bug report
[05:12] <relaxed> but first search and make sure someone hasn't already filed one.
[06:01] <seablade_mbp> Hey question, I am working on generating a HLS multi-bitrate output from a single file for a script.  I can generate the segmented HLS output for each bitrate, but each nitrate ends up with it's own m3u8 file, is there a way to generate a single m3u8 for multiple bitrates in ffmpeg?
[06:02] <seablade_mbp> dang autocorrect changed bitrate to nitrate, sorry about that
[06:02] <seablade_mbp> s/nitrate/bitrate
[06:24] <seablade_mbp> Some clarification, what I am looking for is a way to generate a *.m3u8 file, that via the contains the list of all the m3u8 files generated already for the various bitrates, and provides the appropriate BANDWIDTH etc. info in the EXT-X-STREAM-INF metadata for the stream in the m3u8 file… if that made any sense at all:)
[06:26] <seablade_mbp> Bah ok finally found something on it, looks like according to issue #2600, it isn't implemented yet:(
[11:06] <xlinkz0> can I cut with accurate duration?
[11:07] <durandal_1707> yes
[11:09] <xlinkz0> durandal_1707: how?
[11:09] <xlinkz0> i mean while stream copying
[11:14] <sacarasc> I don't think you can with copying, because you might not start on a keyframe.
[11:15] <xlinkz0> i am starting on a keyframe
[11:15] <xlinkz0> however, can i not end on a keyframe?
[11:15] <xlinkz0> by default it seems to end on a keyframe
[12:25] <xlinkz0> durandal_1707: can yo please tell me how..
[12:38] <Pkunk> is it possible to stream h264 using ffserver ? whatever i try in ffserver.conf , it says 'Codec for stream 0 does not use global headers but container format requires global headers'
[20:16] <gwelkind> Hello, I have a series of PNGs rendered from blender rendered at 4% of 1920x1080. I am trying to issue the command ` ffmpeg -f image2 -i momentum*.png -r 15.0 -qscale 8 momentum.mov` but I'm getting a segmentation fault with no other details. Any ideas?
[20:18] <gwelkind> I have also tried using avconv with the same arguments, but it spits out a video which is only .07s long
[20:28] <gwelkind> http://pastebin.com/D8wKFEUj
[20:29] <durandal_1707> gwelkind: you are not using ffmpeg from FFmpeg project
[20:29] <durandal_1707> either get ffmpeg from FFmpeg project or ask for help on #libav
[20:30] <gwelkind> Ah, duh, sorry...
[20:53] <gwelkind> Still having trouble leading ffmpeg to my image files http://pastebin.com/f8jCKvrP
[20:59] <saste> gwelkind, wrong output filename syntax
[20:59] <saste> hint, you need to specify the number of digits
[21:01] <gwelkind> like this `ffmpeg -start_number 0072 -f image2 -i momentum%4d.png -r 15.0 -qscale 1 momentum.mov`?
[21:17] <gwelkind> Great, it's working
[21:17] <gwelkind> thank you @saste :)
[21:20] <gwelkind> One problem though: I am working with videos that have been purposely rendered at a very low resolution as a sort of 'pixelmation' project. I am trying to preserve the pixels as they are, but in executing this ffmpeg command and converting to .mov, there seems to be some compression going on which blurs the squares together...
[21:21] <gwelkind> IIs there any way to assure that the pixels are kept discrete?
[21:31] <mark4o> gwelkind: increase quality (lower crf), e.g. -crf 18
[21:32] <gwelkind> I'm getting `Unrecognized option 'crf'`
[21:33] <mark4o> What video codec are you using?
[21:49] <gwelkind> hmm, I didn't supply a -vcodec argument, doesn't ffmpeg figure it out from the output file extension? Is there a place where I can find out which codec to use for different kinds of files?
[22:00] <mark4o> gwelkind: normally for .mov it should use the h264 codec, unless your ffmpeg was not built with it enabbled.
[22:01] <mark4o> it should say what it used under Output - Stream #0
[22:02] <mark4o> If you are using libx264 (h264 codec) then it should have the -crf option
[22:02] <mark4o> so it sounds like you are using something else, or you entered the option wrong
[22:36] <sturner> Hi all -- is there a way to stream / a container format that would support h264 and speex over udp?
[00:00] --- Sun Sep 22 2013