Hi, trying to use ffmpeg to capture screen, I connected my old un-used web cam (Microsoft LifeCam VX-6000 to my windows 7 notebook. according to the directions on the web, in the ffmpeg prompt, I entered
ffmpeg -list_devices true -f dshow -i dummy
to see the web cam is recognized by ffmpeg. (It read "Microsoft LifeCam VX-6000") So I endtered to record the screen,
ffmpeg -f dshow -i video="Microsoft LifeCam VX-6000" test.mp4
but it gave me error below : [dshow @ 000000000046a9a0] Could not RenderStream to connect pins video=Microsoft LifeCam VX-6000: I/O error I looked it up on the web and tried reconnecting the web cam, and installing K-Lite codec pack for no avail. What could be the problem? Any suggestion will be deeply appreciated. Thanks! Chan