I compiled pdp but when I run it I don't get an image. I tried the input_output.pd patch with no success. Below is what I get in the terminal window after creating a window opening pdp_v4l and banging it once. I tried pdp_xv and pdp_glx with no luck. I can see the video with Gem and xawtv so I think video4linux is ok. Any thought where I should start to look for problems. I'm using a logitech usb based webcam. Thanks. Jim Sample width set to 2 bytes PDP: pure data packet PDP: version 0.12.3 pdp_xvideo: grabbed port 61 on adaptor 0 pdp_v4l: opening /dev/video0 pdp_v4l: cap: name Logitech USB Camera type 513 channels 1 maxw 352 maxh 292 minw 32 minh 32 pdp_v4l: picture: brightness 32767 depth 24 palette 4 pdp_v4l: channel 0 name Camera type 2 flags 0 pdp_v4l: switched to channel 0 pdp_v4l: set norm to 0 pdp_v4l: buffer size 426240, frames 1, offset 0 0 pdp_v4l: using VIDEO_PALETTE_YUV422 pdp_v4l: frame 0 0, format 7, width 320, height 240 pdp_v4l: Opened video connection (320x240) pdp_v4l: VIDIOCMCAPTURE: Invalid argument pdp_v4l: VIDIOCMCAPTURE2: Invalid argument pdp_v4l: frame 1 1, format 7, width 320, height 240 pdp_v4l: VIDIOCSYNC: Bad file descriptor pdp_v4l: no device opened pdp_v4l: attempting auto open pdp_v4l: opening /dev/video0 pdp_v4l: cap: name Logitech USB Camera type 513 channels 1 maxw 352 maxh 292 minw 32 minh 32 pdp_v4l: picture: brightness 32767 depth 24 palette 4 pdp_v4l: channel 0 name Camera type 2 flags 0 pdp_v4l: switched to channel 0 pdp_v4l: set norm to 0 pdp_v4l: buffer size 426240, frames 1, offset 0 0 pdp_v4l: using VIDEO_PALETTE_YUV422 pdp_v4l: frame 0 0, format 7, width 320, height 240 pdp_v4l: Opened video connection (320x240) pdp_v4l: VIDIOCMCAPTURE: Invalid argument pdp_v4l: VIDIOCMCAPTURE2: Invalid argument pdp_v4l: frame 1 1, format 7, width 320, height 240 pdp_v4l: VIDIOCSYNC: Bad file descriptor pdp_v4l: auto open failed