2013-10-01T05:45:43Z
How to build and run MJPG-Streamer on the Raspberry Pi
It's been a while since I wrote the article on streaming video from the Raspberry Pi using MJPG-Streamer. Since I published that article I have received several comments and questions regarding issues building MJPG-Streamer, so in this short post I'm giving you revised build instructions.
1. Install build dependencies
The following command installs the three libraries that MJPG-Streamer uses:
$ sudo apt-get install libjpeg8-dev imagemagick libv4l-dev
2. Add missing videodev.h
The videodev.h header file that MJPG-Streamer needs has been replaced with a videodev2.h. To make MJPG-Streamer happy you have to create a symbolic link:
$ sudo ln -s /usr/include/linux/videodev2.h /usr/include/linux/videodev.h
3. Download MJPG-Streamer
The source code for MJPG-Streamer is available at sourceforge.net, but it is tricky to find the direct download link:
$ wget http://sourceforge.net/code-snapshots/svn/m/mj/mjpg-streamer/code/mjpg-streamer-code-182.zip
Note that sometimes the link above fails to work. If that is the case, you can also download from your web browser by opening this page: http://sourceforge.net/p/mjpg-streamer/code/HEAD/tarball.
4. Unzip the MJPG-Streamer source code
The source code download is a compressed zip file. Put the file in your home directory (or a temporary folder, if you prefer) and run the following to extract the files:
$ unzip mjpg-streamer-code-182.zip
5. Build MJPG-Streamer
MJPG-Streamer comes with several plugins, but only a couple of them are needed to stream video according to the method I explained in my previous article. The command below only builds what's needed:
$ cd mjpg-streamer-code-182/mjpg-streamer
$ make mjpg_streamer input_file.so output_http.so
6. Install MJPG-Streamer
I did not discuss installation in the previous article, and that confused many readers. The following commands copy all the needed files into system directories:
$ sudo cp mjpg_streamer /usr/local/bin
$ sudo cp output_http.so input_file.so /usr/local/lib/
$ sudo cp -R www /usr/local/www
7. Start the camera
We are almost there. Now it is time to start the camera module:
$ mkdir /tmp/stream
$ raspistill --nopreview -w 640 -h 480 -q 5 -o /tmp/stream/pic.jpg -tl 100 -t 9999999 -th 0:0:0 &
Of course, you can use different options to raspistill if you like.
8. Start MJPG-Streamer
The camera is now writing images, so all that is left is to start MJPG-Streamer:
LD_LIBRARY_PATH=/usr/local/lib mjpg_streamer -i "input_file.so -f /tmp/stream -n pic.jpg" -o "output_http.so -w /usr/local/www"
9. Watch the Stream!
Now you can connect with your web browser and watch the stream live. If you want to watch from within the same Raspberry Pi you can enter http://localhost:8080 in the browser's address bar. If you want to watch from another computer in your network use http://<IP-address>:8080.
10. Cleanup
After you verify that everything is working you can remove the source code:
$ cd ../../
$ rm -rf mjpg-streamer-182
Conclusion
I hope these instructions clarify all the aspects of setting up the streaming server on the Pi. If you still have questions let me know below!
Miguel
#301 Miguel Grinberg said 2016-08-10T06:32:06Z
@Kuan: Yes, you need to use an equivalent utility for your camera.
#302 Guillermo said 2016-09-15T17:07:44Z
Package libv4l-dev is not availabel for Mac. What other package I use ?
#303 Miguel Grinberg said 2016-09-21T19:17:59Z
@Guillermo: this tutorial is for the Raspberry Pi and its camera. If you plan on using a Mac then you need different code that can access the Mac camera.
#304 RA said 2016-10-11T21:40:13Z
Great blog! I know this was posted 3 years ago, but I just found it. Do you think I would be able to run this program (with some tweaking) on a Jetson microcontroller? Thanks!
#305 Miguel Grinberg said 2016-10-12T00:29:55Z
@RA: not sure, sounds like it is not at all like the RPi.
#306 luigichi said 2016-10-19T22:15:03Z
worked also for me on RPI3 with pi camera 1.3 - thanks!
#307 patrick said 2016-11-23T01:03:38Z
Thank you for the great tutorial. Is there any way I can change the port of the streamer?
#308 Miguel Grinberg said 2016-11-23T01:30:26Z
@patrict: see comment #198.
#309 Smera said 2016-12-21T19:53:53Z
Hi, I can view the stream on Raspberry Pi browser (http://localhost:8080) but cannot access the same from another machine in the same network using (http://<IP-address-of-RPi:8080). Any idea why? Thanks, Smera.
#310 Miguel Grinberg said 2016-12-22T04:16:42Z
@Smera: Probably something in your network setup is blocking external access, like maybe a firewall.
#311 delta1071 said 2017-01-15T13:44:38Z
Awesome tutorial, Miguel. I followed your instructions, changed the directory for the output image (pic.jpg) to my "Pictures" folder and voila!! it works flawlessly! However, I don't see any suggestions for improving the framerate. Is there a way to increase them so the stream is less jerky? Thanks again for your efforts in putting together this tutorial.
#312 Miguel Grinberg said 2017-01-15T16:18:44Z
@delta1071: this method is not going to give you great frame rates. It's been a while, but I think I was getting about 8-10 fps using a 640x480 frame size.
#313 delta1071 said 2017-01-16T03:55:48Z
OK. One more question: It seems the max number of lines the terminal can print is 100000, so when the "...skipping frame 'x' to restart at frame 'y'" message appears and y=100000, the stream stops. Is there a way to have the stream run continuously (i.e for hours or days), if desired? Thanks.
#314 Miguel Grinberg said 2017-01-16T21:55:31Z
@delta1071: you can create a wrapper script for raspistill that runs it again when it exits. Note that the problem is not the size of the terminal, raspistill has a timeout, this is the number you give in the -t argument.
#315 Kevin said 2017-01-23T15:28:12Z
"Skipping frame 2271 to restart at frame 390289" Why does this keep happening?
#316 Miguel Grinberg said 2017-01-23T15:57:37Z
@Kevin: The raspistill tool is saying that it had to skip a frame. There are many reasons for this, maybe because it can't keep up with the data rate. Try using smaller image sizes.
#317 kedar said 2017-03-02T08:39:47Z
Hi, Thanks for the tutorial, Great it works.
#318 Hao said 2017-06-06T05:03:16Z
Hi I've been running into a problem after stopping the streaming by exiting the terminal of camera starting as the program can't be stopped with Crtl + C,I get this error when i try to start the camera again: mmal: mmal_vc_component_enable: failed to enable component: ENOSPC mmal: camera component couldn't be enabled mmal: main: Failed to create camera component mmal: Failed to run camera app. Please check for firmware updates The camera works after rebooting. What's the cause of this? Is there any proper way to exit? Thanks.
#319 reda almorsy said 2017-06-06T21:21:16Z
thanks for your effort would you tel me how can i get images from open cv instead of getting it directly from camera because i want to make face recognition then start streaming
#320 Miguel Grinberg said 2017-06-07T00:12:21Z
@Hao: I don't have a Pi at hand to test this right now, but have you checked if there are any processes still running after you press Ctrl+C? Did you stop raspistill, for example? You may want to manually kill any remaining process, that should free the resources and allow you to restart.
#321 Miguel Grinberg said 2017-06-07T00:14:20Z
@reda: I don't have specific code written for OpenCV, you will need to write a script that does the same job as raspistill, in that it writes jpg files to disk, from where mjpg-streamer can read them.
#322 Hardy said 2017-06-08T20:11:31Z
Thanks a lot .Its working perfectly for me