Posted by Wim Koorenneef on 2008-12-31 17:27 CET
I just bought a new webcam, a Logitech Quickcam Vision Pro (Mac version, 046d:09a6) with hardware controlled autofocus. Pictures are really sharp and the autofocus is cool too. Anyway, i needed to capture a small video with sound. Here's the ffmpeg command i used.
ffmpeg -t 10 -f video4linux2 -s 320x240 -r 30 -i /dev/video0 -f oss -i /dev/dsp1 -f mp4 webcam.mp4No need to compile ffmpeg, this works out of the box!
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Composite input
How do I tell ffmpeg to use the composite input of my TV tuner device in Linux. The primary device is /dev/video1. In a program like Tvtime I can toggle to the composite input. Any help would be greatly appreciated.
Use v4l2-ctl -i 2
I'm by no means an expert on ffmpeg, but maybe you can try
v4l2-ctl -i 2to switch to composite. I didn't try it myself, so best to also readman v4l2-ctlmac
For a second there I thought you were using ffmpeg to record from a webcam in OS X. Anybody know if this is possible? You can do this in windows by using directshow input: http://betterlogic.com/roger/2011/08/ffmpeg-directshow/
capturing audio from webcam using ffmpeg on WinXP
The command here is only to capture video from webcam. Do you have any option that we can add with this command and make ffmpeg capture audio also from webcam?
From the ffmpeg man page:
From the ffmpeg man page: ffmpeg -f oss -i /dev/dsp -f video4linux2 -i /dev/video0 /tmp/out.mpg
Not sure how this works on XP. I use linux exclusively.
Question!
I would also like some answers if it can be done with windows?
I'm trying to do in windows
I'm trying to do in windows XP with a Logitech Quickcam pro 9000, but it seem to be a problem with the vfwcap driver...this use the new WDM driver provided by Microsoft.
Anyone could help me??
To record sound on my Fedora
To record sound on my Fedora 14 system using alsa, I had to set the sound input to '-f alsa -i hw:0,0', or '-f alsa -i default'. For reasons of its own, ffmpeg does not accept the /dev/blah device designation for alsa audio, but does for oss audio and for video. Sigh.
script fail
I installed it. Ran the script. The light on my webcam went on momentarily then it died.
"[oss @ 0x953ff30]/dev/dsp1: No such file or directory"
[user@localhost ~]$ uname -r
2.6.34.7-56.fc13.i686
Full error below. All help appreciated.
ffmpeg.i686 0:0.6-3.fc13
Complete!
[user@localhost ~]$ ffmpeg -t 10 -f video4linux2 -s 320x240 -r 30 -i /dev/video0 -f oss -i /dev/dsp1 -f mp4 webcam.mp4
FFmpeg version 0.6-rpmfusion, Copyright (c) 2000-2010 the FFmpeg developers
built on Jul 27 2010 03:51:48 with gcc 4.4.4 20100630 (Red Hat 4.4.4-10)
configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib --mandir=/usr/share/man --arch=i686 --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables' --extra-version=rpmfusion --enable-bzlib --enable-libdc1394 --enable-libdirac --enable-libfaad --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avfilter-lavf --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib --cpu=i686 --enable-runtime-cpudetect
libavutil 50.15. 1 / 50.15. 1
libavcodec 52.72. 2 / 52.72. 2
libavformat 52.64. 2 / 52.64. 2
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.19. 0 / 1.19. 0
libswscale 0.11. 0 / 0.11. 0
libpostproc 51. 2. 0 / 51. 2. 0
[video4linux2 @ 0x953e860]Estimating duration from bitrate, this may be inaccurate
Input #0, video4linux2, from '/dev/video0':
Duration: N/A, start: 34034.144617, bitrate: 36864 kb/s
Stream #0.0: Video: rawvideo, yuyv422, 320x240, 36864 kb/s, 30 tbr, 1000k tbn, 30 tbc
[oss @ 0x953ff30]/dev/dsp1: No such file or directory
/dev/dsp1: Input/output error
ioctl(VIDIOC_QBUF)
Name webcam sound device
Maybe /dev/dsp1 isn't the webcam sound device in your setup. Try the 'dmesg' command right after plugging in the webcam and see what the name of your webcam sound device is.
Thanks
That is really appreciated!!! And so simple :)
To preview couldn't you command ffmpeg to take .jpg frames from video and display in HTML with refresh ..or capture to flash video and simultaneously display with flash player.
can i do this in windows xp
can i do this in windows xp
Yes, You can do it in Windows.
Yes You can do it in Windows XP.
Right now I have did it.
the command is to be typed on command prompt.
go to cmd prompt. set path to the folder containing ffmpeg executable.
then type command as:
ffmpeg -r 25 -f vfwcap -i 0 output.avi
example:
c:\ffmpeg\bin>ffmpeg -r 25 -f vfwcap -i 0 output.avi
prior to the command shows the path of the folder containing the ffmpeg.exe
On running this command the web-cam attached to your system starts capturing the video. Its working fine.
Main problem in front of me now, is to show the preview of video being recording. So trying that out. Also I need to integrate ffmpeg to my existing MSVC++ project, which needs a lot of things to taken care.
So, guys I am doing it..
Hello Kamal, I would like to
Hello Kamal, I would like to know:
1.) if you had any luck getting a preview of the video while capturing it using ffmpeg?
2.) if we can capture both video and audio from a capture device simultaneously using ffmpeg?
wa, its amazing! thanks a lot
wa, its amazing! thanks a lot ,i learned a lot!
im a newbie here! happy to know you!nice forum!
Question
How would you capture in windows from camera on remote I.P.?
Can this be done on Mac OSx
Can this be done on Mac OSx or Windows? If so what are the prerequisites needed?
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