On Sat, 16 Oct 2010 21:53:24 +0200 Jan Stary <h...@stare.cz> wrote: > On Oct 16 19:20:32, Jacob Meuser wrote: > > On Sat, Oct 16, 2010 at 05:46:24PM +0200, Jan Stary wrote: > > > (I have changed the subject, > > > because the subject has changed.) > > > > > > On Oct 14 01:59:39, Jacob Meuser wrote: > > > > On Thu, Oct 14, 2010 at 12:05:09AM +0000, Jacob Meuser wrote: > > > > > On Thu, Oct 14, 2010 at 12:59:37AM +0200, Jan Stary wrote: > > > > > > On Oct 13 22:07:27, Jacob Meuser wrote: > > > > > > > On Wed, Oct 13, 2010 at 11:51:47PM +0200, Jan Stary wrote: > > > > > > > > This is a fresh upgrade of current/amd64 on a Macbook3,1. > > > > > > > > Basically, everything works except the wifi and uvideo. > > > > > > > > > > > > > > > I installed the uvideo firmware as documented in uvideo(4). > > > > > > > > I can capture an image with 'fswebcam image.jpg'; > > > > > > > > I have problems capturing a video stream with > > > > > > > > ffmpeg -y -f video4linux2 -s vga -r 25 -i /dev/video0 > > > > > > > > /tmp/out.mpg > > > > > > > > (the fps eventually drops to 0 and results in a tiny file > > > > > > > > containing just a few frames) but I haven't really tried > > > > > > > > tweaking the format options. > > > > > > > > > > > > > > ffmpeg doesn't work with video(4). frankly, I don't understand > > > > > > > why > > > > > > > video(4) support is enabled in ffmpeg, giving the the impression > > > > > > > it's > > > > > > > supposed to work, when it clearly doesn't. > > > > > > > > > > > > On another machine (HP EliteBook 8530w running a recent -current) > > > > > > I can capture video(4) just fine - using certain resolutions and > > > > > > frame > > > > > > rates, that is. > > > > > > > > > > with ffmpeg? can you share your command, I've never gotten it to > > > > > work. > > > > > > This _sometimes_ works: > > > ffmpeg -y -f video4linux2 -r 25 -s vga -i /dev/video out.mpg > > > Other times, the fps gradually drops to zero. > > > > > > With the current ffmpeg (just built form svn), > > > it consistently results in > > > > > > ffmpeg -y -f video4linux2 -r 25 -s vga -i /dev/video0 /tmp/out.m> > > > FFmpeg version SVN-r25502, Copyright (c) 2000-2010 the FFmpeg developers > > > built on Oct 16 2010 14:05:50 with gcc 4.2.1 20070719 > > > configuration: > > > libavutil 50.32. 3 / 50.32. 3 > > > libavcore 0. 9. 1 / 0. 9. 1 > > > libavcodec 52.92. 0 / 52.92. 0 > > > libavformat 52.83. 0 / 52.83. 0 > > > libavdevice 52. 2. 2 / 52. 2. 2 > > > libavfilter 1.52. 0 / 1.52. 0 > > > libswscale 0.12. 0 / 0.12. 0 > > > [video4linux2 @ 0x83f3d080] ioctl set time per frame(1/25) failed > > > /dev/video0: Input/output error > > > > > > It fails this way with any other framerate, too. > > > So you are right: it doesn't work. > > > > I'm pretty sure this is because video/uvideo doesn't allow setting the > > frame rate. also, many webcams don't deliver a consistent frame rate; > > some of them will deliver a higher frame rate if they receive more light. > > > > > > fwiw, this is what I use, because using ffmpeg to capture directly from > > > > video(4) has never worked for me: > > > > > > > > $ video -f /dev/video1 -e yuy2 -s 640x480 -r 20 -o - | ffmpeg -y \ > > > > -f rawvideo -pix_fmt yuyv422 -s 640x480 -r 20 -i - \ > > > > -itsoffset 0.5 -f sndio -ar 16000 -ac 1 -i sun:1 out.avi > > > > > > This is much more reliable; > > > without audio, I can capture just fine with > > > > > > $ video -f /dev/video -e yuy2 -s 640x480 -r 20 -o - \ > > > | ffmpeg -y -f rawvideo -pix_fmt yuyv422 -s 640x480 -r 20 -i - out.avi > > > > > > However, the audio part does not work for me. > > > The ffmpeg-20100512p4 package says > > > > > > $ video -f /dev/video -e yuy2 -s 640x480 -r 20 -o - \ > > > | ffmpeg -y -f rawvideo -pix_fmt yuyv422 -s 640x480 -r 20 -i - \ > > > -f sndio -ar 16000 -ac 1 -i sun:1 out.avi > > > FFmpeg version SVN-r23102, Copyright (c) 2000-2010 the FFmpeg developers > > > built on Oct 11 2010 18:27:01 with gcc 4.2.1 20070719 > > > configuration: --enable-shared --cc=cc --disable-altivec > > > --disable-armv5te --disable-armv6 --disable-armv6t2 --disable-armvfp > > > --disable-debug --disable-indev=jack --disable-indev=oss --disable-iwmmxt > > > --disable-neon --disable-optimizations --disable-outdev=oss --enable-gpl > > > --enable-libfaac --enable-libfaad --enable-libgsm --enable-libmp3lame > > > --enable-libschroedinger --enable-libspeex --enable-libtheora > > > --enable-libvorbis --enable-libx264 --enable-nonfree --enable-postproc > > > --enable-pthreads --enable-runtime-cpudetect --enable-x11grab > > > --extra-cflags=-I/usr/local/include -I/usr/X11R6/include > > > --extra-libs=-L/usr/local/lib -L/usr/X11R6/lib --mandir=/usr/local/man > > > libavutil 50.15. 2 / 50.15. 2 > > > libavcodec 52.67. 0 / 52.67. 0 > > > libavformat 52.62. 0 / 52.62. 0 > > > libavdevice 52. 2. 0 / 52. 2. 0 > > > libavfilter 1.20. 0 / 1.20. 0 > > > libswscale 0.10. 0 / 0.10. 0 > > > libpostproc 51. 2. 0 / 51. 2. 0 > > > [rawvideo @ 0x80239080]Estimating duration from bitrate, this may be > > > inaccurate > > > Input #0, rawvideo, from 'pipe:': > > > Duration: N/A, start: 0.000000, bitrate: N/A > > > Stream #0.0: Video: rawvideo, yuyv422, 640x480, 20 tbr, 20 tbn, 20 tbc > > > [sndio @ 0x83bc9080]Could not open sndio device > > > sun:1: Input/output error > > > > -f sndio -ar 16000 -ac 1 -i sun:1 out.avi > > > > that means to record 16kHz mono from /dev/audio1. maybe that just isn't > > supported on your hardware? > > Aaah, yes, sorry; :1 should be :0 on my hardware. > > > > I get the same result with -f sndio -i /dev/audio. > > > > does simply 'ffmpeg -f sndio -i /dev/audio out.wav' work? > > If I kill aucat, yes. > > > > I get the same result with or without aucat running. > > > > yeah, ffmpeg requires to specify the "input file", even if the specified > > format's demuxer can figure out on it's own what the "input file" is, > > which means '-i /dev/audio' will not work when aucat is running. when > > aucat is running, you can use '-i aucat:0' or '-i default', assuming > > you are not renaming the aucat streams with aucat's -s option. > > With '-i aucat:0' and aucat running, it works fine. > > > > > The svn install of ffmpeg doesn't even recognize sndio as a format > > > (Unknown input format: 'sndio'). It does recognize -f oss, > > > and I can capture both video and audio with > > > > > > $ video -f /dev/video -e yuy2 -s 640x480 -r 20 -o - \ > > > | ffmpeg -y -f rawvideo -pix_fmt yuyv422 -s 640x480 -r 20 -i - \ > > > -f sndio -ar 48000 -ac 2 -i /dev/audio out.avi > > > > afaik Brad submitted the sndio backend but the ffmpeg devs consider > > OpenBSD insignificant ... they seem to think that because they don't > > get many complaints about ffmpeg not working on OpenBSD that no one > > uses ffmpeg on OpenBSD, heh. > > (Maybe I should subscribe to the ffmpeg list again to bitch some more.) > > Thanks again > > Jan >
How about everyone on this list complains for the next 26 weeks during the week that the letter of their second name matches. a=1, b=2, z=26
