I need to know what is the max fps for the logitech fusion. In the past days I have read almost all the messages fron the last two months from this list, the discussion on the thread Trouble recording from two webcams was illuminating, and the table from http://www.mail-archive.com/linux-uvc-devel%40lists.berlios.de/msg00306.html from logitech, it is clear that 30 fps can be achieved in mjpeg and yuv modes, real tests with other logitech cameras report 15 fps at 640x480 and 10 fps at 960x720.
When I installed the fusion on my windows xp using the software bundled with this camera, one can record video at a resolution of 640x480, but when playing this video on linux one can see that the video is only at 15 fps. Yesterday I got the uvcvideo driver from cvs (split branch) and installed in my debian sid pc. Luvcview works at 640x480 15 fps in mjpeg mode and 1024x576 10 fps in yuv mode. I can record video using: ffmpeg -an -r 50 -y -vd /dev/video0 -sameq -t 4 -s 1024x576 test.avi and ffmpeg say: ------------- [video4linux2 @ 0xb7ef0610][4]Capabilities: 4000001 Input #0, video4linux2, from '': Duration: N/A, bitrate: N/A Stream #0.0: Video: rawvideo, yuv422, 1024x576, 471859 kb/s, 50.00 fps(r) Output #0, avi, to 'test.avi': Stream #0.0: Video: mpeg4, yuv420p, 1024x576, q=2-31, 200 kb/s, 50.00 fps(c) ------------------ But this video has duplicate frames (5) so in reality it is only 10 fps, trying other frame rates also produce duplicated frames and 10 fps effective. I can also view video with mplayer using (in a window or full window): ffmpeg -an -vd /dev/video0 -s 1024x576 -r 10 -b 5000 -y -vcodec mpeg4 -f avi - | /usr/bin/mplayer - If someone find how to record video un mjpeg mode with ffmpeg, please post to this list. installing: apt-get install libpt-plugins-V4L2 allows ekiga to works, but it is inestable. installing v4l2ucp-1.2 allows to change some parameters for the camera I have looked into the code but appears like the code automatically detect the best frame rate for the camera?. Does someone knows if it is possible to capture 30 fps with these cameras in 640x480? I need this information urgent because if it is possible, in these days I will buy 3 more of these cams. if not I will have to go to plan B, and buy a non expensive digital cameras (not a webcam) that can grab video at 640x480 and 30 fps. I really appreciate the work from the people involved in this driver, Regards, Francisco _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
