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RPi + OpenELEC grabber lightberry UTV007 crops usefull picture

Discussion in 'Hardware Support' started by tormozit, 6 July 2019.

  1. tormozit

    tormozit New Member

    Messages:
    6
    Hardware:
    RPi3
    I bought Lightberry kit 5 (HDMI 2.0) with UTV007 grabber a week ago. I took screenshot from grabber and saw grabber cuts a useful image from all sides. I attach screenshots of the original image on the TV and its cropped version. It can be seen that the number "1" in grabbed picture is completely absent. Its width is 25 pixels from 1920 of the entire screen, i.e. 1-1.3% on each side of the picture is cropped. It really annoys me, because I noticed it more than once in the usual video viewing. I ask you to check on your grabber if there is a similar problem. For me, it does not depend on HDMI video mode (checked on 720p, 1080p, 2160p with various Hz), i.e. about the same percentage of all edges of the image is always cropped. I have already tried all the settings of the grabber in command line. They all do not affect this problem. How can I fix it?

    Original picture (1920x1080)
    [​IMG]

    grabbed picture (PAL 756x520)
    [​IMG]
     
    Last edited: 6 July 2019
  2. tormozit

    tormozit New Member

    Messages:
    6
    Hardware:
    RPi3
    I make screenshot by command
    LD_LIBRARY_PATH=/storage/hyperion/bin /storage/hyperion/bin/hyperion-v4l2 --screenshot
     
    Last edited: 6 July 2019
  3. Paulchen-Panther

    Paulchen-Panther Active Member Developer

    Messages:
    399
    Hardware:
    RPi1/Zero, RPi3, 32/64bit, +Arduino
  4. tormozit

    tormozit New Member

    Messages:
    6
    Hardware:
    RPi3
    hyperion.config.json is not used in command "hyperion-v4l2 --screenshot". But you can view it here
     
  5. tormozit

    tormozit New Member

    Messages:
    6
    Hardware:
    RPi3
    Please output my picture to your grabber in fullscreen mode 1080p and make screenshot. Post here your grabbed screenshot, grabber model, videocard model and videodriver version or tv box model or game box model.
    Mine is videocard Geforce 1080ti driver 430.
     
    Last edited: 7 July 2019
  6. tormozit

    tormozit New Member

    Messages:
    6
    Hardware:
    RPi3
    Here is another UTV007 grabbed screenshot taken from other forum. We can see 0 crop from left and right sides, but 2.6%(!) crop from top and bottom sides. It is very bad. We need to find reason and solution.
     

    Attached Files:

  7. Paulchen-Panther

    Paulchen-Panther Active Member Developer

    Messages:
    399
    Hardware:
    RPi1/Zero, RPi3, 32/64bit, +Arduino
  8. tormozit

    tormozit New Member

    Messages:
    6
    Hardware:
    RPi3
    Thx. Although you did not understand my idea (digit "1" should fit closely to left edge of screen), but in your screenshots we can see that you do not have cropping of useful picture, i.e. AV converter and grabber work correctly.
     
  9. Paulchen-Panther

    Paulchen-Panther Active Member Developer

    Messages:
    399
    Hardware:
    RPi1/Zero, RPi3, 32/64bit, +Arduino
    Du hast es schon selber mit bekommen. Auf meinem Screen wird nichts abgeschnitten. Somit liegt es an deiner Hardware und nicht an Hyperion.
    Entweder du suchst dir eine analoge hardware (Röhrenfernseher) um zu schauen ob es am grabber liegt oder du versucht es mit v4l2-ctl.
     
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