Error In Ioctl Vidiocgmbf Invalid Argument
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Failed To Open Video Device /dev/video0
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Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up V4L problem with VIDIOCGCAP ioctl call up vote 0 down vote favorite I'm having some issue working with V4L (the API that provides unified access to various video capturing for Linux). I'm tryng to make a VIDIOCGCAP ioctl call, but I get an INVALID ARGUMENT error. Here is an strace: execve("./test", ["./test"], [/* 26 vars */]) = 0 brk(0) = 0x8d5c000 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7fc9000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=29703, ...}) = 0 mmap2(NULL, 29703, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7fc1000 close(3) = 0 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) open("/lib/i686/cmov/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\260e\1\0004\0\0\0\4"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=1413540, ...}) = 0 mmap2(NULL, 1418864, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7e66000 mmap2(0xb7fbb000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x155) = 0xb7fbb000 mmap2(0xb7fbe000, 9840, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fbe000 close(3) = 0 mmap2(NU
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Raspberry Pi Questions Tags Users Badges Unanswered Ask Question _ Raspberry Pi Stack Exchange is a question and answer site for users and developers of hardware and software for Raspberry Pi. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise http://stackoverflow.com/questions/898474/v4l-problem-with-vidiocgcap-ioctl-call to the top Motion - grey screen with camera module up vote 1 down vote favorite I set up motion and the UV4L drivers for the raspberry pi camera module, but when I try to start motion with sudo motion, and connect with VLC I only get a grey screen. This is what the terminal says: [0] Processing thread 0 - config file /etc/motion/motion.conf [0] Motion 3.2.12 Started [0] ffmpeg LIBAVCODEC_BUILD 3482368 http://raspberrypi.stackexchange.com/questions/23544/motion-grey-screen-with-camera-module LIBAVFORMAT_BUILD 3478785 [0] Thread 1 is from /etc/motion/motion.conf [0] motion-httpd/3.2.12 running, accepting connections [0] motion-httpd: waiting for data on port TCP 8080 [1] Thread 1 started [1] cap.driver: "raspicam" [1] cap.card: "Camera Board OV5647" [1] cap.bus_info: "CSI" [1] cap.capabilities=0x01000001 [1] - VIDEO_CAPTURE [1] - READWRITE [1] Test palette YU12 (320x240) [1] Using palette YU12 (320x240) bytesperlines 480 sizeimage 115200 colorspace 00000000 [1] found control 0x00980900, "brightness", range 0,100 [1] "brightness", default 50, current 50 [1] found control 0x00980901, "contrast", range -100,100 [1] "contrast", default 0, current 0 [1] found control 0x00980902, "saturation", range -100,100 [1] "saturation", default 0, current 0 [1] found control 0x0098090e, "red balance", range 0,800 [1] "red balance", default 100, current 100 [1] found control 0x0098090f, "blue balance", range 0,800 [1] "blue balance", default 100, current 100 [1] found control 0x08000000, "shutter speed", range 0,65535 [1] "shutter speed", default 0, current 0 [1] found control 0x08000001, "zoom factor", range 1,8 [1] "zoom factor", default 0, current 1 [1] ioctl (VIDIOCGCAP): Invalid argument [1] Could not fetch initial image from camera [1] Motion continues using width and height from config file(s) [1] Resizing pre_capture buffer to 1 items [1] Started stream webcam server in port 8081 [1] Retrying until successful connection with camera [1] cap.driver: "raspicam" [1] cap.card: "Camera Board OV5647" [1] cap.bus_info: "
permitivity Member Registered: 2013-02-18 Posts: 11 USB webcam - why I need to run "fswebcam" before "motion" Hello,I'm having a curious issue with "motion", the webcam program. I have both "fswebcam" and "motion" https://bbs.archlinux.org/viewtopic.php?id=162376 installed on my pogoplug running ArchLinux Arm. There is a USB webcam (Logitech 310).After bootup, I can't run the "motion" command without errors. I need to run "fswebcam" first, then ctrl-C to stop fswebcam, then http://www.lavrsen.dk/foswiki/bin/view/Motion/SupportQuestion2011x12x14x031349 run "motion". If I do that, motion works like it should.My goal to to use motion. Fswebcam was installed when I was playing around initially. I was scratching my head on why Motion sometimes unable to works and sometimes doesn't, until I realized that it only works during the sessions where I run fswebcam sometime before I try motion. If I reboot the system, I need to run fswebcam again before Motion would work works.I post my output below. The error that throws up seems to have something to do with trying to find the pallet? But motion is using the same conf file, to open video and I don't know why pallet YUYV doesn't work until after fswebcam is run.Eventually, I'd like to put motion into daemon mode and run it on startup automatically, but have to figure this out first. Thanks for any help!Here's the output of motion if I don't run fswebcam first:[root@alarm ~]# motion[0] Processing thread 0 - config file /etc/motion/motion.conf[0] Motion 3.2.12 Started[0] ffmpeg LIBAVCODEC_BUILD 3489124 LIBAVFORMAT_BUILD 3481700[0] Thread 1 is from /etc/motion/motion.conf[0] motion-httpd/3.2.12 running, accepting connections[0] motion-httpd: waiting for data on port TCP 8080[1] Thread 1 started[1] cap.driver: "uvcvideo"[1] cap.card: "UVC Camera (046d:081b)"[1] cap.bus_info: "usb-orion-ehci.0-1.3"[1] cap.capabilities=0x04000001[1] - VIDEO_CAPTURE[1] - STREAMING[1] Config palette index 6 (YUYV) doesn't work.[1] Supported palettes:[1] 0: YUYV (YUV 4:2:2 (YUYV))[1] 1: MJPG (MJPEG)[1] Selected palette YUYV[1] VIDIOC_TRY_FMT failed for format YUYV: Input/output error[1] Unable to find a compatible palette format.[1] ioctl (VIDIOCGCAP): Invalid argument[1] Could not fetch initial image from camera[1] Motion continues using width and height from config file(s)[1] Resizing pre_capture buffer to 1 items[1] Started stream webcam server in port 7081[1] Retrying until successful connection with camera[1] cap.driver: "uvcvideo"[1] cap.card: "UVC Camera (046d:081b)"[1] cap.bus_info: "usb-orion-ehci.0-1.3"[1] cap.capabilities=0x04000001[1] - VIDEO_CAPTURE[1] - STREAMING[1] Config palette index 6 (YUYV) doesn't work.[1] Supported palettes:[1] 0: YUYV (YUV 4:2:2 (YUYV))[1] 1: MJPG (MJPEG)[1] Selected palet
and ioctl (VIDIOCGCAP): Invalid argument Question Motion was unable to start after performing an upgrade in Ubuntu 11.10 system. Is there any fix for this? Thanks. Dec 14 11:12:10 thestudio motion: [1] cap.driver: "uvcvideo" Dec 14 11:12:10 thestudio motion: [1] cap.card: "Laptop_Integrated_Webcam_2M" Dec 14 11:12:10 thestudio motion: [1] cap.bus_info: "usb-0000:00:1a.7-6" Dec 14 11:12:10 thestudio motion: [1] cap.capabilities=0x04000001 Dec 14 11:12:10 thestudio motion: [1] - VIDEO_CAPTURE Dec 14 11:12:10 thestudio motion: [1] - STREAMING Dec 14 11:12:10 thestudio motion: [1] Error selecting input 0 VIDIOC_S_INPUT: Device or resource busy Dec 14 11:12:10 thestudio motion: [1] ioctl (VIDIOCGCAP): Invalid argument Environment Motion version: 3.2.12 ffmpeg version: 0.7.2 Libraries: ffmpeg Server OS: Ubuntu 11.10, kernel 3.0.0-14-generic -- MichaelLok - 14 Dec 2011 Follow Up Michael , did you tried to change the input value in motion.conf ? Anyway we are going to release motion 3.0 , you can grab from SVN current version that should work better and with many bug fixed. http://www.lavrsen.dk/foswiki/bin/view/Motion/MotionSubversion Cheers, -- AngelCarpintero - 05 Jan 2012 Answer SupportForm edit TopicTitle Error selecting input 0 VIDIOC_S_INPUT: Device or resource busy and ioctl (VIDIOCGCAP): Invalid argument SupportStatus AssignedQuestions AssignedQuestionTo AngelCarpintero SubmittedBy WikiGuest Edit |Attach|Print version|History: r2