[Ffmpeg-devel-irc] ffmpeg.log.20120401

[burek]

[03:15] <darkstarbyte> New logo on the website.
[03:16] <Durmush> too flashy
[03:20] <xxthink> how to create a variable frame rate bitstream?
[03:21] <burek> xxthink, set -crf or -q or -cqp
[03:22] <burek> oh, frame rate
[03:22] <burek> just ignore me :)
[03:32] <darkstarbyte> Durmush, Did you set it? I like it better than the old logo, and it goes with the flash that some operating systems posses(Windows vista, Windows 7, KDE, the newer versions of gnome, and the new Mac operating systems.).
[03:32] <darkstarbyte> s/Mac/Apple/
[03:33] <darkstarbyte> xxthink, which codec?
[03:36] <xxthink> 264
[03:36] <xxthink> darkstarbyte:
[03:37] <xxthink> other codec are also ok
[04:02] <darkstarbyte> I am still not sure exactly what you after
[04:03] <darkstarbyte> your*
[04:03] <darkstarbyte> If you want a certain file size exactly, then use 2 pass encoding.
[04:03] <darkstarbyte> It will be a variable bit rate on most encoders
[04:04] <darkstarbyte> It just will not let the file get to much bigger or smaller than a certain size.
[04:07] <darkstarbyte> If you want a constant quality then crf is recommended.
[04:07] <darkstarbyte> In any case you could go over to the x264 channel.
[04:34] <sunjun> when config with  --enable-libstagefright_h264 got ERROR: libstagefright_h264 not found
[04:34] <sunjun> 0.10
[07:15] <oneal_gao> 	hello, I use the hardware decoding(dxva2) function in the ffmpeg(ffmpeg-v0.7-) to decoding mpeg2 video. but the result is not correctly and there is defferent when I using software decoder and using dxva2 decoder . I want to know whether this feature can be correctly
[07:16] <oneal_gao> in the v0.7 version
[11:06] <woshty> i did do something like ffmpeg pipe:1 | tee foo.file | ffplay -i - but when it is done, then terminal does not schon what is typed anymore ..
[11:21] <woshty> ah, stty sane fixes it ..
[16:32] <woshty> if i am using ffplay to play an videofile that is still being recorded off my webcam, it does not continue to play longer than the time i started playback. why is that?
[17:01] <rav0> woshty, it checks the length when opening. you might try piping directly
[17:03] <woshty> rav0: i tried piping, but it screwed up my terminal so i switched to using a file. is there a way to tell it not to stop playing?
[17:03] <rav0> maybe, i don't know
[17:06] <burek> woshty, how exactly do you use ffplay
[17:06] <burek> can you please use pastebin.com, to show your command line and its output?
[17:08] <woshty> http://pastebin.com/jpNWEWpU is the command line
[17:09] <burek> :)
[17:09] <burek> you can't do it like that :)
[17:10] <burek> ffmpeg will write avi file and update it's header (length of the media, for example)
[17:10] <burek> and when ffplay starts and reads the avi file, it will read the length and that's it
[17:10] <burek> that's why it won't work
[17:11] <burek> what is your overall goal
[17:11] <burek> what are you trying to achieve?
[17:11] <woshty> can i switch to another container format or sth? i am trying to get a live preview while i am recording.
[17:12] <burek> you could use udp for example
[17:12] <burek> -f mpegts udp://localhost:12345
[17:12] <burek> or tee command
[17:13] <burek> something like ffmpeg -i ... -f mpegts - | tee ... | ffplay
[17:13] <ePirat> how do i remove lame when installed using make install?
[17:13] <burek> make uninstall
[17:13] <woshty> burek: i tried tee, but it screwed my terminal and i got advice not to send binary sth over pipes
[17:14] <burek> then use named pipes
[17:14] <burek> mkfifo
[17:15] <burek> btw, how did you use pipes?
[17:15] <burek> any cmd line example?
[17:18] <woshty> ffmpeg pipe:1 | tee file | ffplay -i -
[17:22] <burek> oh
[17:22] <burek> that's ok, just use -f mpegts
[17:22] <burek> or some other streaming format, just not file format
[17:22] <burek> type ffmpeg -formats
[17:22] <burek> and see if there are some "pipe" formats
[17:23] <burek> and try using those
[17:25] <ePirat> can i specify where ffmpeg should search for faac and libmp3lame?
[17:25] <maujhsn> ubitux Hi! What are the commands to use to do dvd or cd authoring with ffmpeg
[17:26] <woshty> burek: thx
[17:28] <burek> woshty, :beer: :)
[17:28] <burek> ePirat, yes you can :)
[17:28] <ePirat> how?
[17:28] <burek> did you type ./configure --help?
[17:28] <ePirat> yes& didn''t found anything
[17:31] <woshty> burek: did you mean using the thing i posted on pastebin with mpegts or the pipe thing?
[17:31] <burek> ePirat, did you try with --extra-libs=
[17:32] <ePirat> no
[17:32] <burek> woshty, pipe
[17:32] <ePirat> burek, I'll try, thanks
[17:32] <maujhsn> Can anybody  give me the commands to use to do dvd or cd authoring with ffmpeg!
[17:34] <ePirat> burek, when using it C compiler test fails
[17:44] <ePirat> burek, ok found it, --extra-cflags=-I/path/to/include --extra-ldflags=-L/path/to/lib  did the job
[18:02] <woshty> burek: i dont seem to be able find a format except avi that can store mjpeg, any ideas?
[19:43] <nadavrub> Any1 familiar with ffmpeg & x264 ?
[19:51] <hi117> http://freenode.net/privacy_change.html
[20:20] <llrealmanll>  have an error during convert via ffmpeg
[20:22] <llrealmanll> http://pastie.org/private/vkbqw5y9r2xgyeluqa5eg
[20:24] <llrealmanll> any guide
[20:24] <llrealmanll> ?
[21:02] <cbsrobot> llrealmanll: add -vframes 1
[21:03] <llrealmanll> cbsrobot: to the command line for convert ?
[21:03] <cbsrobot> sure
[21:03] <llrealmanll> ty
[21:21] <XAVeRY> I used FFmpeg to transcode a x264 Matroska video file into a XviD AVI (libxvid), with the output resolution 640x360 and output bitrate approximately 1200 kbps. the resulting file is of somewhat lower quality than my other XviD files at that bitrate. what am I missing?
[21:42] <llrealmanll> cbsrobot:  http://pastie.org/private/dzg9p9fh7beuoccppdlhra
[21:44] <cbsrobot> llrealmanll: FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers <-- please update to latest
[21:49] <llrealmanll> cbsrobot: any guide for last version on cent os ?
[21:52] <cbsrobot> llrealmanll: http://ffmpeg.org/trac/ffmpeg/wiki/CentosCompilationGuide
[22:45] <sweb> http://pastie.org/private/c5z40ewguokxacsp53vrfw
[22:45] <sweb> error during make
[22:48] <sweb> cbsrobot: please help
[22:52] <sweb> :(
[22:54] <cbsrobot> sweb first install latest x264 with --disable-lavu
[22:54] <cbsrobot> then install ffmpeg with --enable-libx264
[22:54] <sweb> cbsrobot: ty so much
[22:54] <cbsrobot> then install x264 again with --enable-lavu
[22:55] <sweb> i used http://ffmpeg.org/trac/ffmpeg/wiki/CentosCompilationGuide
[22:55] <cbsrobot> yes but you had x62 already installed on your machine
[22:55] <cbsrobot> *x264
[22:56] <cbsrobot> maybe with yum
[22:57] <sweb> yeah right
[23:16] <sweb>  cbsrobot: not solved
[23:16] <sweb> ./configure --enable-static --disable-lavu
[23:17] <sweb> x264
[23:24] <sweb> :(
[23:25] <cbsrobot> --disable-lavf
[23:25] <cbsrobot> sorry
[23:28] <sweb> ty
[23:31] <sweb> then ffmpeg support x264 ?
[23:34] <cbsrobot> what ?
[23:43] <sweb> flv for example
[23:47] <relaxed> sweb: you have to add --enable-libx264
[23:47] <sweb> relaxed: if i add it i'v got an error :(
[23:50] <sweb> i wonder. isnt a way ?
[23:51] <relaxed> 1) remove libx264 and libx264-dev from your system. 2) install the latest libx264 from git 3) install the latest ffmpeg from git. 4) done.
[00:00] --- Mon Apr  2 2012