[Ffmpeg-devel-irc] ffmpeg.log.20120813

[burek]

[00:00] <iive> you said it is not properly capture, I assumed this means that it is captured, but not as it is visible on screen.
[00:00] <iive> freezing is completely different matter entirely.
[00:01] <iive> is the opengl output that freezes or the avconv capture?
[00:02] <iive> have in mind, it may be entirely libav specific problem.
[00:07] <sontek> Can I include an audo file when turning images into a video?
[00:10] <sontek> just include a second input file?
[00:14] <iive> sontek: yes. i think there might be example somewhere in the documentation.
[00:25] <jbwiv_> guys, I have a bunch of old DVCPRO videos ripped long ago from a Sony MiniDV camera. I'm trying to convert them to a more 2012-ish friendly format, but not having much luck. ffmpeg tells me this: http://pastie.org/4462894. Anyone have any ideas how to fix this? tia
[00:29] <ubitux> ibaacplus: bad aac setting: br:128000, AACch:2, AACsr:16000
[00:29] <ubitux> [libaacplus @ 0x10aa7c0] libaacplus doesn't support this output format!
[00:30] <ubitux> sounds explicit to me
[00:35] <jbwiv_> ubitux: so you're saying that it's impossible to convert this with ffmpeg?
[00:36] <sacarasc> jbwiv_: To them exact settings.
[00:37] <sacarasc> If you use different audio settings, it should work fine.
[00:51] <tomreyn> iive: sorry, missed your reply. it's the capture which freezes.
[00:51] <tomreyn> please be sure to highlight me when responding.
[00:52] <iive> tomreyn: at that point i would recommend you to get recent ffmpeg source, release or git, compile it yourself and see if it works better. also try another code, just in case x264 is the cause of the problem.
[00:52] <iive> code/codec
[00:53] <tomreyn> i guess compiling it needs a couple dozen dependencies?
[00:54] <iive> not really, ffmpeg is quite self evident. maybe `apt-get build-dep ffmpeg` could help you, or "libav"
[00:55] <iive> even if you don't install all libraries, it would give you a list with candidates :)
[01:23] <jbwiv_> sacarasc: ok, I'll try another one. any recommendations?
[01:40] <tomreyn> ubitux: thanks for the writeup, this gives a nice overview on the ffmpeg / libav situation, i find (though I have not checked other sources).
[01:40] <tomreyn> and thanks for your and live's support, too. i'll probably look into building ffmpeg the other day.
[06:26] <benbro> can I transcode RTMP live stream to ogg in realtime?
[07:03] <TrixIsOwned> hey, I'm having a problem with files ending the stream before getting to the end of the file duration, http://pastebin.com/k4r9HTCn the log file doesnt seem to give any hints
[08:26] <looop> hello, i'm trying to play back 1080p h.264 video on a samsung s5pv210 board, for which i crosscompiled ffmpeg. however, it seems that i'm lacking the kernel backend for the av-api video acceleration to kick in, does anybody know where to get that backend for linux 2.6.35? (this should be the intel gma500 / poulsbo backend)
[09:28] <Sashmo> looop: I would try and ask this question again in a few hours when everyone is awake
[09:28] <looop> thanks Sasmo :)
[09:28] <looop> s/Sasmo/Sashmo
[09:28] <Sashmo> curious though what your trying to do ?
[09:29] <looop> i've got an arm devel board here which i'm evaluating to see whether it works as a multimedia platform
[09:29] <Sashmo> playing with tablets?
[09:29] <looop> not quite a tablet, as opposed to pretty much everybody else :)
[09:29] <looop> but basically the same thing, minus touchscreen and touch ui
[09:30] <Sashmo> nice interesting, good luck
[09:30] <looop> cheers :)
[13:29] <Peanut> Hi folks - I'm trying to make a movie out of seperate jpeg frames, using 'ffmpeg -sameq -i Frame-%03d.jpg test.mp4" - this works fine, but the resulting video is much brighter than the input jpegs (which are rather dark, as these are shots of a shooting star). How can I tell ffmpeg to keep the same brightness?
[14:14] <strangeloop> hello, i'm trying to play back 1080p h.264 video on a samsung s5pv210 board, for which i crosscompiled ffmpeg. however, it seems that i'm lacking the kernel backend for the av-api video acceleration to kick in, does anybody know where to get that backend for linux 2.6.35? (this should be the intel gma500 / poulsbo backend)
[14:17] <iive> strangeloop: i think it is called vaapi. what is graphic card intel?
[14:17] <strangeloop> iive: yeah it needs va-api, which i installed via apt-get. what i need is the kernel space va-api backend
[14:18] <strangeloop> this is using the PowerVR sgx540
[14:18] <iive> i have no idea is powervr have any kind of drivers for linux.
[14:18] <strangeloop> so after reading a bit more, i think the gma500/poulsbo stuff does not apply, as that's for sgx535
[14:18] <iive> is/if
[14:19] <strangeloop> thanks iive :) i'll check with imgtec directly
[14:20] <iive> the vaapi is usually provided by the xorg video driver. the driver then connects to the kernel.
[14:20] <iive> i know intel provide vaapi, there is a wrapper library that turns ati fglrx xvba into vaapi, and that's all know about it.
[14:21] <strangeloop> right.. that's actually a part that i dont quite understand yet. so both X and the kernel need to support the specific GPU then?
[14:22] <iive> kind of.
[15:05] <samst> Hi, I'm having some issues with getting ffmpeg to read a UDP stream
[15:05] <samst> I'm running a fairly simple command: ffmpeg -i udp://10.48.5.210:6001 -vcodec copy -acodec copy movie.mov
[15:06] <samst> But it just prints the VLC version number and then sits there doing nothing
[15:06] <samst> Sorry, ffmpeg version number
[15:06] <samst> multicat produces a file just fine
[15:06] <samst> so I wondered if I was missing an option
[15:27] <rom1v> hi
[15:27] <rom1v> how to know the list of options of frei0r (ffmpeg -vf frei0r) ?
[15:44] <BlackPhoenix> Can I somehow route video from TCP stream onto a virtual webcamera? Windows solution preferred, just a general pointer onto where to look is fine too
[15:44] <BlackPhoenix> I can understand the first part, but not how to get it onto a virtual webcamera
[16:20] <BlackPhoenix> An easier question, suppose I can use ffplay to play my stream on screen and grab it from there, so forget that issue
[16:20] <BlackPhoenix> But ffplay crashes when quality of the input stream I give it gets too low
[16:20] <BlackPhoenix> The stream I have goes through a lossy channel, and can loose even all of its bits. ffplay crashes, anything I can do?
[16:21] <BlackPhoenix> The format is MPEG
[17:34] <alyawn> does side_data have to be transmitted to decode an AAC stream?
[17:58] <Soltis> I'm getting this error when trying to recode an mkv file: Decoder (codec text) not found for input stream #0:2 -- the only reference I can find to this is another IRC log from a while ago with a suggestion to the person having it to report a bug. Was the issue ever fixed?
[18:07] <msmithng> any clues on how to attach a patch submission to a ticket?
[18:08] <msmithng> or should I just make a reference to the ticket url in git send-email?
[18:42] <Amnesia> question, I'm trying to transcode my v4l2 stream to mjpeg and then pipe it to a named pipe
[18:43] <Amnesia> and then I'm trying to play it with a media player (mplayer <- not relevant )
[18:43] <Amnesia> ffmpeg -f video4linux2 -s 320x240 -r 30 -i /dev/video0 -vcodec mjpeg - > tmp
[18:43] <Amnesia> but when I try and play it, ffmpeg states the following: Unable to find a suitable output format for 'pipe:'
[18:43] <Amnesia> what's the reason for this?
[18:44] <Amnesia> (also tried rawvideo
[18:44] <Amnesia> )
[18:53] <Amnesia> nvm forgot the format-,-.
[19:48] <junixbr> is possible convert mng + mp3 files to avi using ffmpeg?
[21:23] <Sashmo_at_work> does anyone know of a good audio monitoring application?  I would like to check vu and db levels of of my input transport stream
[21:33] <Amnesia> question, the rtp container should allow rawvideo right..?
[21:33] <Amnesia> ( I'm a real noob @ video )
[21:34] <Amnesia> ffmpeg -an -f video4linux2 -i /dev/video0 -vcodec copy -b:v 200k -f rtp rtp://10.0.0.2:12345 <- results in ffmpeg not able to write the header
[21:35] <Amnesia> https://privatepaste.com/38dd4d35e4
[21:36] <Amnesia> ( other codecs like mjpeg/libx264 etc do work but are of crappy quality )
[21:37] <iive> raw video is extremely huge... you can easlity flood 1000mbps network.
[21:37] <Amnesia> hm
[21:37] <Amnesia> is that the reason it's failing?
[21:37] <iive> at least x264 have lossless mode
[21:38] <iive> to be honest, i know almost nothing about streaming.
[21:41] <Amnesia> hmkay
[21:41] <Amnesia> guess I'll play around with h264 then
[21:47] <Amnesia> iive: how is one to determine what codecs are supported for a specific container (in general )
[21:48] <iive> i think that rtp is standardized in a series of rfc
[21:48] <Amnesia> hm didn't though of that
[21:48] <Amnesia> but what about avi/mkv for example?
[21:48] <iive> it is extremely hard to add new formats to it, as each format is literally hard coded. I've seen rtp carry mpeg-ts
[21:49] <iive> aka used as transport for some container. I guess this is much simpler approach.
[21:49] <iive> no idea if ffmpeg can create such a thing.
[21:50] <Amnesia> hm but as in video 101
[21:50] <Amnesia> how can someone know what codec is supported for a specific container
[21:50] <Amnesia> is it documented somewhere?
[21:51] <Amnesia> (Unknown encoder 'mpegts')
[21:51] <iive> well... in theory containers should be able to contain any codec.
[21:51] <Amnesia> (while it is listed in ffmpeg -formats )
[21:51] <Amnesia> hm ok
[21:51] <iive> but e.g. mpeg-ts is mostly friendly to mpeg codecs.
[21:52] <Amnesia> hm ok
[21:53] <Sashmo_at_work> does anyone know of a good audio monitoring application?  I would like to check vu and db levels of of my input transport stream
[22:07] <Amnesia> iive: does ffmpeg support srtp?
[22:13] <iive> is that secure rtp ? again, no idea.
[22:21] <Amnesia> yeh
[22:21] <Amnesia> ah k:)
[22:36] <Amnesia> hm did ffmpeg quit creating manpages?
[22:41] <Amnesia> ah "make documentation"
[22:42] <Amnesia> any chance that that was undocumented?
[23:02] <DelphiWorld> hello
[23:02] <DelphiWorld> michaelni: hi
[23:03] <DelphiWorld> Mon Aug 13 16:59:49 2012 [rtp @ 0x1a92ba0]Unsupported codec dvb_teletext
[23:07] <DelphiWorld> anyone?
[23:09] <DelphiWorld> iive: do you know about this issue? Unsupported codec dvb_teletext
[23:46] <Mista_D> to use -force_key_frames on a 3 hour long movie the list of i-frames is 30 lines thick. Every 10 sec value from 0 to 10800 sec (: Any way to simplify the command?
[00:00] --- Tue Aug 14 2012