Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. Qt v4l2 capture image higher resolution (RPi)
Qt 6.11 is out! See what's new in the release blog

Qt v4l2 capture image higher resolution (RPi)

Scheduled Pinned Locked Moved General and Desktop
1 Posts 1 Posters 3.0k Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • M Offline
    M Offline
    makgab
    wrote on last edited by
    #1

    Hi!

    I'm testing the Qt and v4l2 to capture the webcam image. I use" this project":http://qt-apps.org/content/show.php/?content=126541

    Can I use the higher resolution in v4l2? If I use (modify the code) the higher resolution of 640480 then no preview (in console):
    "Warning: driver is sending image at 640x480"
    The lower resolutions work fine (640
    480, 320240, 160120).

    I would like to use it with Raspberry Pi & 5Mp camera and I would like to capture with 5Mp PNG image and 320*240 camera preview.
    Or can I solve this for example in that way?

    • App run in the 320*240 resolution in preview,
    • App calls the "raspistill" for capturing image (PNG 5Mp) ?

    --
    G.

    --
    G.

    1 Reply Last reply
    0

    • Login

    • Login or register to search.
    • First post
      Last post
    0
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Search
    • Get Qt Extensions
    • Unsolved