Hi,<br><br>Maybe you can try FFmmpeg, see <a href="http://ubuntuforums.org/showthread.php?t=1392026">here</a>.<br><br><div class="gmail_quote">2011/3/26 Ian Malone <span dir="ltr"><<a href="mailto:ibmalone@gmail.com">ibmalone@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi,<br>
<br>
I'm trying to record from a webcam and getting terrible performance<br>
from Cheese and problematic performance from VLC. Is anyone able to<br>
either tell me how to get one of them working properly or suggest<br>
another app that will work? Details (hardware at bottom)<br>
<br>
Cheese cheese-2.30.1-1.fc13.x86_64, nice, simple to use. Recording<br>
performance is awful. The booth framerate is fine, but as soon as I<br>
start recording it drops dramatically (going from frames per second to<br>
seconds per frame). VLC's ability to encode to the same target -<br>
Theora/Vorbis (but see below) and the fact I can do this under windows<br>
with the movie maker suggest a Cheese problem. Resolution is at<br>
640x480 (which is what VLC and move maker are using), dropping to<br>
355x288 is okay. This cheese bug seems to be related<br>
<a href="https://bugzilla.gnome.org/show_bug.cgi?id=564957" target="_blank">https://bugzilla.gnome.org/show_bug.cgi?id=564957</a> but not resolved.<br>
Anyone using F14 with good performance for cheese video recording?<br>
<br>
VLC vlc-1.1.7-1.fc13.x86_64. Less friendly, for a start I haven't been<br>
able to get it to capture by specifying devices in the capture dialog.<br>
If I just open capture and hit play I get video and sound. I can use<br>
/dev/video0 as the video input and after a bit of trial and error<br>
(using debug mode I realise it was using alsa device names) pulse for<br>
the audio device, but if I attempt to use the capture device advance<br>
options (with or without specifying /dev/video0):<br>
Your input can't be opened:<br>
VLC is unable to open the MRL 'v4l2://'. Check the log for details.<br>
<br>
~/.xsession-errors has this:<br>
[0x7f2dfc0044e0] v4l2 demux error: invalid tuner -1.<br>
[0x7f2dfc008240] v4l2 access error: invalid tuner -1.<br>
[0x7f2e08008590] main input error: open of `v4l2://' failed: (null)<br>
<br>
(Or tuner 0 which is what it defaults to, tried -1 as this appears to<br>
be auto for other params)<br>
<br>
But capturing to theora/vorbis results in video and audio playing at<br>
different speeds, the default (which seems to be the ALSA hw device)<br>
has video faster than audio, capturing to the default (mp4) or webm is<br>
okay, using pulse and /dev/video0 webm video is slower than audio...<br>
and so on. This most successful approach so far is to open the device<br>
in play mode, use the 'advanced controls' record button and capture<br>
uncompressed a/v to avi the transcode later. This would be sort of<br>
endurable, but it would be nice to record transcoded and be able to<br>
adjust the recorded size (camera can go up to 1280x720). I'd also like<br>
to be able record both soundcard and webcam audio and video, but it<br>
looks like that will never happen with Cheese and may be difficult<br>
with VLC, so I may have to accept recording one separately and syncing<br>
up later.<br>
<br>
AMD Athlon X2 5000+ cpu, 2GB RAM<br>
<br>
Logitech C270HD cam:<br>
uvcvideo: Found UVC 1.00 device <unnamed> (046d:0825)<br>
input: UVC Camera (046d:0825) as<br>
/devices/pci0000:00/0000:00:0b.1/usb1/1-6/1-6:1.0/input/input5<br>
usbcore: registered new interface driver uvcvideo<br>
<br>
Thanks for your time,<br>
--<br>
imalone<br>
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</font></blockquote></div><br><br clear="all"><br>-- <br>Guohua Tang<br>Research Center for Information Retrieval, Harbin Institute of Technology<br><a href="http://ir.hit.edu.cn/~tangguohua">ir.hit.edu.cn/~tangguohua</a> --- <a href="http://icycandy.com">icycandy.com</a><br>