[Ffmpeg-devel-irc] ffmpeg.log.20131107

[burek]

[00:01] <noobed> compiling errors: /usr/local/lib/libavdevice.a(lavfi.o): In function `lavfi_read_packet': /home/vasko/experimental/ffmpeg/libavdevice/lavfi.c:334: undefined reference to `av_buffersink_get_frame_flags'
[00:01] <noobed> any help?
[01:07] <eristisk> What is the compression_level value that encodes to FLAC at the highest compression (smallest files)?
[01:08] <eristisk> ffmpeg -i blah.wav -acodec flac -compression_level 12 blah.flac
[01:08] <eristisk> ?
[01:21] <triggerhapp> I'm finding little documentation on the -g flag. I know so much that choosing 0 means it's all I-frames, but what do non-zero values denote?
[02:14] <Plorkyeran> maximum distance between keyframes
[04:06] <nrobbins> I am having trouble with the fieldmatch filter. When I use fieldmatch, decimate, my video plays twice as fast as it should. Can someone help me understand what I am doing wrong.
[04:23] Last message repeated 1 time(s).
[04:25] <roothorick> so clarify something for me. MP3 decoding is builtin and doesn't rely on an external library? And do I need a license upgrade for it?
[04:26] <roothorick> by MP3 I mean MPEG layer3 audio, not just the container
[04:26] <sacarasc> It's built in, I do not know about licensing ffmpeg.
[04:27] <therube_agone> http://www.ffmpeg.org/legal.html
[04:28] <roothorick> therube_agone: that does not answer the question of precisely what is available in GPL vs. LGPL
[04:29] <sacarasc> roothorick: Build without --enable-gpl and see what you get?
[04:29] <roothorick> I'm playing with configure right now
[04:30] <roothorick> what are "indevs"?
[04:34] <relaxed> input devices
[04:42] <nrobbins> No help on the fieldmatch filter?
[09:01] <noobed> some compiling erros .. could any1 help? /usr/local/lib/libavdevice.a(lavfi.o): In function `lavfi_read_packet':
[09:01] <noobed> /home/vasko/experimental/ffmpeg/libavdevice/lavfi.c:334: undefined reference to `av_buffersink_get_frame_flags'         what library am I missing to point the linker to? I've tried -lavfi but no success
[09:02] <anshul_> i was trying to analyse bug 2093, need problem.rm video
[09:02] <anshul_> hey nobbed you did some change in source.
[09:03] <anshul_> whats ur platform, destro and all info
[09:04] <anshul_> whats ur(nobbed) platform, destro and other info
[10:56] <noobed> could any1 look @ cpp file and tell me where I'm decoding and writing raw audio wrong?
[11:03] Action: mrAZ is trying to find out what means "[3][0][0][0]" in :  Stream #0:0[0x44]: Audio: mp2 ([3][0][0][0] / 0x0003), 44100 Hz, stereo, s16
[11:05] <viric> there are 4-byte identifiers per codec, I think. And I guess "[]" prints the byte value. 0 and 3 are non-printable characters, so hence they may be given as numbers in [].
[11:06] <viric> the FourCC, no?
[11:06] <mrAZ> viric: thx for hints
[11:07] <viric> my guess. no idea.
[11:08] <viric> the 0x0003 is a bit confusing though. It looks like two bytes, not four. :)
[11:25] <brontosaurusrex>  ffmpeg -i video.mov (ignore audio if any) -i audio.wav (ignore video if any) -vcodec copy -acodec copy -cut to video length out.mov < how would the correct cli look like?
[11:27] <ubitux> -shortest maybe
[11:30] <brontosaurusrex> ubitux, no, since there is a big change that audio is shorter
[11:30] <brontosaurusrex> chance*
[12:15] <brontosaurusrex> uhmm, is there a way to generate silent audio if audio is shorter than video?
[12:28] <brontosaurusrex> so the solution might be if video longer audio then generate some sort of mute audio and mix it with audio added then mux ..
[12:28] <brontosaurusrex> dam*
[13:50] <brontosaurusrex> p.s. the solution was to use -t "$video" and -filter complex apad
[14:34] <viric> brontosaurusrex: thanks for reporting
[15:29] <noobed> am I writing a raw audio in the right way? - https://gist.github.com/noobed/7353451
[15:29] <noobed> why can't I open the myOutputTest file using avformat_open_input()
[18:06] <noobed> am I writing a raw audio in the right way? - https://gist.github.com/noobed/7353451
[18:06] <noobed> why can't I open the myOutputTest file using avformat_open_input()      any ideas? any1?
[18:32] <ffmpegnoob> I am trying to stream a recorded file with ffserver via rtsp. VLC can play the stream perfectly. Quicktime, however, does not.
[18:33] <ffmpegnoob> Is there any information out there as to why quicktime outputs "RTSP Version not supported"
[18:34] <ffmpegnoob> yet vlc can stream it just fine? this is really frustrating :(
[18:36] <ffmpegnoob> Here is my ffserver configuration file: http://pastie.org/private/mjn4cq7c4gxcybo0hdkxa
[18:39] <ezekiel> ffmpegnoob: I don't know enough to say what the problem is - but as a matter of helping brainstorm,
[18:40] <ezekiel> it sounds like Quicktime doesn't support the version of RTSP used by ffserver
[18:40] <ezekiel> it sounds that way because Quicktime says exactly that in its error
[18:41] <ezekiel> assuming the error isn't lying, I would try two things - Upgrade Quicktime (I personally hate Quicktime, and would just dump it completely)
[18:41] <ezekiel> or try to convince ffserver to use a particular version of RTSP
[19:11] <joseph> ffmpegnoob: Quicktime can only play Quicktime files.
[19:11] <joseph> VLC can play anything.
[19:14] <joseph> But that's a quicktime file.
[19:14] <joseph> So ignore me.
[19:14] <joseph> :D
[20:00] <ffmpegnoob> joseph, ezekiel, thanks for the input
[20:01] <ffmpegnoob> ezekiel: is there any way to specify a version of rtsp?
[20:01] <ffmpegnoob> I can't upgrade quicktime any further
[20:02] <ffmpegnoob> ezekiel: ps, i fricking hate quicktime. I'd use VLC/mplayer any day over that P.O.S
[20:03] <ffmpegnoob> just so happens I am required to use quicktime for this specific use case
[20:26] <therube> ffmpegnoob: did you ? first two hits may give you some points to ponder:   https://www.google.com/search?q=quicktime++%22RTSP+Version+not+supported%22&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:unofficial&client=seamonkey-a
[20:29] <ffmpegnoob> therube: i did look at those posts already. thanks, though
[20:29] <ffmpegnoob> I'll reponder them
[20:30] <ffmpegnoob> i've been scouring anything i can put my cursor on
[20:37] <therube> i don't have/use QT, but i believe one of the points is that /sometimes/ you can interchange http: for rtsp:, so you could try that? or maybe try a different source?
[20:37] <therube> rtsp://184.72.239.149/vod/mp4:BigBuckBunny_115k.mov
[20:37] <therube> http://www.wowza.com/_h264/BigBuckBunny_115k.mov
[20:42] <ffmpegnoob> therube: yes, both of those succesffuly load, which makes me very sad
[20:42] <ffmpegnoob> *sniffle* *sniffle*
[22:19] <hailwood> Hey guys, on Fedora I have compiled FFmpeg manually, but it now resides in /home/MY_USER/bin/* which means that only my user can access it, Should I b OK to just cut/paste to /opt/local/bin ?
[22:19] <hailwood> *Should I be OK*
[22:24] <cbsrobot> hailwood: sure you can or you can add /home/MY_USER/bin/ to yout PATH environnement variable
[22:33] <hailwood> cbsrobot, It's actually for the apache user to access it! So hopefully moving it will just work!
[23:49] <tinyhippo> can ffmpeg download RTMP streams?
[23:55] <llogan> tinyhippo: ffmpeg supports RTMP as input
[23:55] <llogan> see ffmpeg -protocols
[23:56] <llogan> http://ffmpeg.org/ffmpeg-protocols.html#rtmp
[00:00] --- Fri Nov  8 2013