Motion - Support Question 2010x 05x 10x 101207

Green Output from USB Capture on Sheevaplug


Motion is running but just outputting a green image with the time stamp in the bottom right.

My usb capture device is using the em28xx capture driver -

The card has an S-video and Composite In plus RCA Audio inputs

The card supports 720 x 576 PAL

I have tried different resolutions, inputs, and palettes but with no success - always green or with some palettes black.

Same USB device works with VLC on Win7, but I really want to use this with the sheevaplug as it will be on 24/7 recording a nestbox.

Here is the output when motion is run with the following command

sudo LD_PRELOAD=/usr/lib/libv4l/ motion:
[0] Processing thread 0 - config file /etc/motion/motion.conf
[0] Motion Started
[0] Thread 1 is from /etc/motion/motion.conf
[0] motion-httpd/ running, accepting connections
[0] motion-httpd: waiting for data on port TCP 8090
[1] Thread 1 started
[1] cap.driver: "em28xx"
[1] cap.card: "EM2860/SAA711X Reference Design"
[1] cap.bus_info: "usb-orion-ehci.0-1"
[1] cap.capabilities=0x05000051
[1] Supported palettes:
[1] 0: YUYV (16 bpp YUY2, 4:2:2, packed)
[1] Selected palette YUYV
[1] index_format 6 Test palette YUYV (720x576)
[1] Using palette YUYV (720x576) bytesperlines 1440 sizeimage 829440 colorspace                        00000001
[1] found control 0x00980900, "Brightness", range 0,255
[1]     "Brightness", default 128, current 128
[1] found control 0x00980901, "Contrast", range 0,127
[1]     "Contrast", default 64, current 64
[1] found control 0x00980902, "Saturation", range 0,127
[1]     "Saturation", default 64, current 64
[1] found control 0x00980903, "Hue", range -128,127
[1]     "Hue", default 0, current 0
[1] mmap information:
[1] frames=4
[1] 0 length=829440
[1] 1 length=829440
[1] 2 length=829440
[1] 3 length=829440
[1] Using V4L2
[1] Resizing pre_capture buffer to 1 items
[1] Started stream webcam server in port 8091


Motion version:
ffmpeg version: 4:0.5+svn20100
Libraries: ffmpeg, mysql, postgresql
Server OS: Debian, ARM,

-- JohnCrake - 10 May 2010

Follow Up

Did you try to capture with any other application ( e.g. xawtv ) ?

You can try to reproduce with 3.2.12 ( not yet release ) :

mkdir motion
cd motion
svn co .

-- AngelCarpintero - 15 May 2010

Thanks for the help - yes tried xawtv, vlc and mplayer all produce the green screen / black screen

As a test I setup Jaunty on the laptop (intel) and was able to get motion working successfully.

I then setup Jaunty on the sheevaplug (arm) but got the same black/green screen?

Is this specific to the Arm processor or to the fact the sheevaplug is headless?

I have tried 3.2.12 and unfortunately I get the same results - green screen with date and time on the bottom right


Topic revision: r6 - 18 May 2010, JohnCrake
Copyright © 1999-2024 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Please do not email Kenneth for support questions (read why). Use the Support Requests page or join the Mailing List.
This website only use harmless session cookies. See Cookie Policy for details. By using this website you accept the use of these cookies.