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IAv
Novice
2,359 Views

Intel Galileo Gen2 - USB Camera

hi,

i'm a student and i need to connect and stream a USB camera to my Galileo Gen2, in the guides that i found i have to change my OS to debian but i don't really know how to do it since i'm not linux expert, can some one help me or know a good manual for streaming video from USB camera via Galileo?

currently i have YOCTO on my Galileo

thanks

Idan

6 Replies
Pablo_M_Intel
Employee
105 Views

Hi IDn1984,

I haven't done this before, but if you don't want to do this using the Yocto image you will need to follow some steps. Also, which image are you currently using? The IoT image or the standard image?

  1. First you should check that your webcam or the device that you'll be using to do the streaming is UVC compatible, you can check a list of UVC compatible devices in here http://www.ideasonboard.org/uvc/ http://www.ideasonboard.org/uvchttp://www.ideasonboard.org/uvc/ /.
  2. Apply power to your Galileo board and connect the USB webcam to the USB port of the board.
  3. Check if the UVC driver is already installed, enter: find /lib/modules/* -name 'uvc'. If nothing is returned it will be necessary to install the UVC driver manually. Let us know if you're having trouble with this.
  4. Verify that the UVC driver is loaded and that the webcam is detected properly. Plug your board and type: lsmod | grep uvc. What output do you get?
  5. Verify that the video device node has been created by typing: ls –l /dev/video0. What output do you get?
  6. Download ffmpeg (this is a free software that produces libraries and programs for handling multimedia data).

 

  1. To capture video - Execute the command: /ffmpeg -s 320x240 -f video4linux2 -i /dev/video0 \ -f mpeg1video -b 800k -r 30 myVideo.mpeg. After some seconds, press q to stop capturing. Copy the file myVideo.mpeg to a PC and check the video.
  2. For web streaming I would suggest you to check these links for examples:

Regards,

PabloM_Intel

IAv
Novice
105 Views

thanks,

i will try it,

IAv
Novice
105 Views

we are using YOCTO standard ,

  1. First you should check that your webcam or the device that you'll be using to do the streaming is UVC compatible, you can check a list of UVC compatible devices in here http://www.ideasonboard.org/uvc/ http://www.ideasonboard.org/uvchttp://www.ideasonboard.org/uvc/ /. --done and its in the list (luvc)
  2. Apply power to your Galileo board and connect the USB webcam to the USB port of the board.
  3. Check if the UVC driver is already installed, enter: find /lib/modules/* -name 'uvc'. If nothing is returned it will be necessary to install the UVC driver manually. Let us know if you're having trouble with this. -- run the command and found the uvc drivers
  4. Verify that the UVC driver is loaded and that the webcam is detected properly. Plug your board and type: lsmod | grep uvc. What output do you get?
    1. cd /lib/modules/**os version**/ 
    2. cat modules.dep | grep -i uvc (finding the uvc drivers) 
    3. modprobe uvcvideo (loading the driver)
    4. lsmod | grep uvc (driver status)
    5. ls -l /dev/video0/ (verified that video0 folder has been created)
    6.  
  5. Verify that the video device node has been created by typing: ls –l /dev/video0. What output do you get? -- we verified that video0 folder has been created
  6. Download ffmpeg (this is a free software that produces libraries and programs for handling multimedia data).-- done

 

  • To capture video - Execute the command: /ffmpeg -s 320x240 -f video4linux2 -i /dev/video0 \ -f mpeg1video -b 800k -r 30 myVideo.mpeg. After some seconds, press q to stop capturing. Copy the file myVideo.mpeg to a PC and check the video.

 

  • ******we managed to run the ffmpeg command as you mentioned, it start to proccesing but than after few seconds we are getting "Illegal instruction" error, we can find the file but i doesn't work and 7k size,

LOG:

sh-4.2# /media/mmcblk0p1/ffmpeg-release-32bit-static/ffmpeg-2.8.2-32bit-static/ffmpeg -s 320x240 -f video4linux2 -i /dev/video0 \-f mpeg1video -b 800k -r 30 myvideo.mpeg

ffmpeg version 2.8.2-static http://johnvansickle.com/ffmpeg/ http://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2015 the FFmpeg developers

built with gcc 5.2.1 (Debian 5.2.1-23) 20151028

configuration: --enable-gpl --enable-version3 --disable-shared --disable-debug --enable-runtime-cpudetect --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libopus --enable-libass --enable-gnutls --enable-libvidstab --enable-libsoxr --enable-frei0r --enable-libfribidi --disable-indev=sndio --disable-outdev=sndio --cc=gcc

libavutil 54. 31.100 / 54. 31.100

libavcodec 56. 60.100 / 56. 60.100

libavformat 56. 40.101 / 56. 40.101

<p style="color: # 212121; font-family: 'Helvetica Neue', Helvetica, Arial, sa...
Pablo_M_Intel
Employee
105 Views

Hi IDn1984,

One thing that you could try is to install ffmpeg from the AlexT repo? Do you have your board configured to fetch packages from his repository? If not, you can follow the instructions in here http://alextgalileo.altervista.org/package-repo-configuration-instructions.html http://alextgalileo.altervista.org/package-repo-configuration-instructions.html.

You can also test with the IoT image, as it has some additional packages.

It's also possible that the Galileo lacks the power to accomplish this.

Regards,

PabloM_Intel

JTurn12
New Contributor II
105 Views

PabloM_Intel wrote:

 

  1. To capture video - Execute the command: /ffmpeg -s 320x240 -f video4linux2 -i /dev/video0 \ -f mpeg1video -b 800k -r 30 myVideo.mpeg. After some seconds, press q to stop capturing. Copy the file myVideo.mpeg to a PC and check the video.
  2. For web streaming I would suggest you to check these links for examples:

Regards,

PabloM_Intel

Thanks for these steps Pablo,

I am using the iot linux Yocto full image.

I do see my webcam as listed and I followed these steps but i get this error: unable to find -f

root@galileo:/home/ffmpg/ffmpeg-2.8.5-32bit-static# /home/ffmpg/ffmpeg-2.8.5-32bit-static/ffmpeg -s 320x240 -f video4linux2 -i /dev/video0 \ -f mpeg1video -b 800k -r 30 myVideo.mpeg

ffmpeg version 2.8.5-static http://johnvansickle.com/ffmpeg/ http://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2016 the FFmpeg developers

built with gcc 4.9.3 (Debian 4.9.3-10)

configuration: --enable-gpl --enable-version3 --disable-shared --disable-debug --enable-runtime-cpudetect --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libopus --enable-libass --enable-gnutls --enable-libvidstab --enable-libsoxr --enable-frei0r --enable-libfribidi --disable-indev=sndio --disable-outdev=sndio --cc=gcc-4.9

libavutil 54. 31.100 / 54. 31.100

libavcodec 56. 60.100 / 56. 60.100

libavformat 56. 40.101 / 56. 40.101

libavdevice 56. 4.100 / 56. 4.100

libavfilter 5. 40.101 / 5. 40.101

libswscale 3. 1.101 / 3. 1.101

libswresample 1. 2.101 / 1. 2.101

libpostproc 53. 3.100 / 53. 3.100

Input # 0, video4linux2,v4l2, from '/dev/video0':

Duration: N/A, start: 3063.888372, bitrate: 36864 kb/s

Stream # 0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 320x240, 36864 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc

[NULL @ 0xb440d60] Unable to find a suitable output format for ' -f'

-f: Invalid argument

any ideas?

Thanks

RBrad2
Valued Contributor I
105 Views

There have been a few discussions about using USB Webcams with the Galileo, you can do a search on the word webcam.

One is here

and there was an instructable made at http://www.instructables.com/id/Streaming-USB-Webcam-with-the-Intel-Galileo-Gen-2/ Streaming USB Webcam with the Intel Galileo Gen 2

I found it best to use AlexT's distribution of Yoto as has the files so can easily install

Hope this helps

rgb

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