希望高手指点，急!：mp4live用摄像头录像问题

ljwjldx

我现在正在用MPEG4IP 和DDS做流媒体服务器，我的系统是SUSE10，现在就是用mp4live进行视频采集出现了问题，摄像头用的是webeye v2000 ,当我点下start后就会出现以下错误：
  14:19:24.746-rtp-6: Created database entry for ssrc 0x0671c28d (1 valid sources)
  14:19:24.748-rtp-6: Created database entry for ssrc 0x725aad17 (1 valid sources)
  14:19:25.708-mp4live-3:  Failed to query video capabilities for /dev/video0 - Invalid argument

我找了很多地方也没找着原因，请问这是什么原因？非常感谢你的指点！

天外闲云

查询webeye v2000的capability失败。

你可以查一下video4linux的库，手动执行query的动作，看是否能够成功，如果video4linux可以成功而mp4live，无法成功的话，就是软件的问题了。

ljwjldx

非常感激你的回复，由于我刚接触这个，还是个菜鸟，所以你说的我不太明白，不过我从网上找了一个程序测试摄像头的，好像和你说的有点像，我执行了一下，这是执行结果，你看一下，希望再次得到你的指点，非常非常感谢！！！！！
open /dev/video0 success.
query capability success.
        name = Z-star Vimicro zc0301p.
        type = VID_TYPE_CAPTURE.
        channels = 1
        maxwidth = 640,maxheight = 480
        minwidth = 176,minheight = 144
channel 0 is available.
        channel name = ZC301-2.
        VIDEO_TYPE_CAMERA = channel is a camera.
        channel norm = 0.
query window success.
        x = 0,y = 0.
        width = 320,height = 240.
query picture success.
        brightness = 32768.
        contrast = 32768.
        depth = 24,palette = VIDEO_PALETTE_RGB24
linux-ku1o:~/mysoft # ./v4l
open /dev/video0 success.
query capability success.
        name = Z-star Vimicro zc0301p.
        type = VID_TYPE_CAPTURE.
        channels = 1
        maxwidth = 640,maxheight = 480
        minwidth = 176,minheight = 144
channel 0 is available.
        channel name = ZC301-2.
        VIDEO_TYPE_CAMERA = channel is a camera.
        channel norm = 0.
query window success.
        x = 0,y = 0.
        width = 320,height = 240.
query picture success.
        brightness = 32768.
        contrast = 32768.
        depth = 24,palette = VIDEO_PALETTE_RGB24
linux-ku1o:~/mysoft # ./v4l
open /dev/video0 success.
query capability success.
        name = Z-star Vimicro zc0301p.
        type = VID_TYPE_CAPTURE.
        channels = 1
        maxwidth = 640,maxheight = 480
        minwidth = 176,minheight = 144
channel 0 is available.
        channel name = ZC301-2.
        VIDEO_TYPE_CAMERA = channel is a camera.
        channel norm = 0.
query window success.
        x = 0,y = 0.
        width = 320,height = 240.
query picture success.
        brightness = 32768.
        contrast = 32768.
        depth = 24,palette = VIDEO_PALETTE_RGB24