Raspberry pi Camera V2 using Qt



  • Hello,
    I have already read a lot of topics about this but I still don't have solution so I'm asking here.

    What is the easiest way to use Raspberry Pi camera V2 in Qt Creator on RPi?
    I read about raspicam, but I don't know how to use. I downloaded source code from git but It needs a lot of added Android headers to download and they are useless for me, because I work on RPi. After downloading all headers it shows a lot of errors.
    Class QCamera is not working here.

    One way I know is write easy python codes and call them from Qt but I'm not fan of counts of QProcess.

    Do you have any idea?
    At all, I need to do:

    • capture picture
    • capture video
    • stream video

    Thanks for your help


  • Lifetime Qt Champion

    Hi,

    AFAIK, QtGstreamer is your best bet of these actives.



  • Based on https://wiki.qt.io/RaspberryPi2EGLFS#Qt_Multimedia
    Unfortunately the GStreamer-based multimedia stuff is not quite usable at the time of writing - accelerated video works only sometimes (and with glitches), while the camera is just broken.
    I am a bit upset because of this and trying to find different way to get Camera stream on raspberry pi.
    Here is nice source:
    http://robotblogging.blogspot.ca/2013/10/an-efficient-and-simple-c-api-for.html
    but it is impossible to have it cross-compiled because this library depends on raspberry pi specific packages. However, it runs fine when building and compiling on raspberry pi board directly.



  • Use libVlc.
    It will allow to capture web cam and store / view / stream camera feed (actually it will allow to access any video / audio file on device including web cam).


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