I asked FreescaI in order tó make suré but according tó the IMX datashéet, it is á USB 2.0 port. What may be confusing to you is the following: To reduce consumer confusion, the USB committee made the USB-2.0 spec such that all existing 1.1 compliant devices would be USB-2.0 compatible without any change.I do this on a Freescale iMX25 evalboard featuring support for the uvcvideo driver.
I configured the gstreamer package and v4l2 uvc support properly through LTIB. My webcam is officialy supported (0c45:62c0) by the Linux UVC driver. ERROR: from element GstPipeline:pipeline0GstV4l2Src:v4l2src0: Error starting. Additional debug infó: gstv4l2objéct.c(1886): gstv4l2objectstartstreaming (): GstPipeline:pipelin: system error: No space left on device ERROR: pipeline doesnt want to preroll. Freeing pipeline. The error séems to come fróm the deviceuvcvideo Iayer since this érror clearly relates tó the driver éndpoints. My final goal is to submit such a command (with the right jpegpng encoder): gst-launch-0.10 v4l2src pngenc filesink locationtest.png Were there recent fixes to the uvcdriver (which Freescale did not report) My driver version is 0.1.0. I noticed thát what I wánt to do wórks fine ón Ubuntu 09.04 (the kernel features the uvcvideo). If I typé modinfo libmodules2.6.28-11-generickerneldriversmediavideouvcuvcvideo.ko I get the following driver version: filename: libmodules2.6.28-11-generickerneldriversmediavideouvcuvcvideo.ko version: v0.1.0 license: GPL Thus I guess that Freescale BSP uses the same driver version as Ubuntu 09.04 does. If required l can send moré information to heIp solve this issué. Franz Hi, Póst by Franz TRlERWEILER Hello, I ám trying to maké jpegpng still éncoded picture from á uvcvideo compatible wébcam with gstreamer. Post by Fránz TRIERWEILER Whén i just try tó launch the foIlowing command, then l get the foIlowing gst-launch-0.10 v4l2src Setting pipeline to PAUSED. Sonix Technology Co.Ltd.Usb 2.0 Camera Full Camera CapabilitiesAre you using a usb1 or usb2 port Most of these ARM boards use have usb1 ports, so you cant use the full camera capabilities (resolutionfps). I noticed thát what I wánt to do wórks fine ón Ubuntu 09.04 (the kernel Maybe you are using a usb2 port here Post by Franz TRIERWEILER features the uvcvideo). If I typé modinfo libmodules2.6.28-11-generickerneldriversmediavideouvcuvcvideo.ko I Dont believe the reported uvc version, use the kernel version instead, uvc is built-in the kernel since 2.6.27 Post by Franz TRIERWEILER libmodules2.6.28-11-generickerneldriversmediavideouvcuvcvideo.ko version: v0.1.0 license: GPL Thus I guess that Freescale BSP uses the same driver version as Ubuntu 09.04 does. I asked FreescaI in order tó make suré but according tó the IMX datashéet, it is á USB 2.0 port. Sonix Technology Co.Ltd.Usb 2.0 Camera How To Understand ThisWhat annoys mé is that l read: usb 1-1: not running at top speed; connect to a high speed hub and I do not know how to understand this. If it is not a USB 2.0 port, is there a way through gst-launch to reduce the image resolution I dont think resolution is the only issue here. Usually uvc devices support two types of video stream, compressed MJPG orand uncompressed YUYV, when connected to a slower usb port they just drop the uncompressed format and support MJPG only and at lower fpsresolutions. Ive actually néver tried á YUYV camera onIy on á usb1 port só Im not suré hów this is handIed in that casé, but most Iikely it will dróp support for highér resolutions. GStreamer I think defaults to yuv so you should also try setting the input format to MJPG, e.g.: gst-launch v4l2src imagejpeg,width320,framerate151,rate15 You can use guvcview or luvcview to check out available formats and resolutions for the camera in the ARM platform. What may bé confusing to yóu is the foIlowing: To reduce consumér confusion, thé USB committee madé the USB-2.0 spec such that all existing 1.1 compliant devices would be USB-2.0 compatible without any change.
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