Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-132105

QCamera API for requesting specific framerate

XMLWordPrintable

    • Icon: User Story User Story
    • Resolution: Unresolved
    • Icon: P2: Important P2: Important
    • None
    • 6.9
    • Multimedia
    • None
    • All

      The Qt QCamera API has no method for setting a specific camera framerate.

      Our API relies on the user applying a valid QCameraFormat to control the output of the camera device. This QCameraFormat class contains a range of allowed framerate values. When the user then passes this QCameraFormat class into QCamera::setCameraFormat() our implementations tend to just pick the highest framerate available for this format.

      This is problematic when the implementation supports a range of valid framerates for a given resolution and pixel-format. For example, if the device reports a supported format with resolution of 1080p and valid framerate range between 5 and 120 FPS, the user has no option to request 24 FPS.

      When we choose a high framerate like this, we give the users less control and we might waste power efficiency on some platforms.

        No reviews matched the request. Check your Options in the drop-down menu of this sections header.

            qtmultimediateam Qt Multimedia Team
            npskalerud Nils Petter Skålerud
            Votes:
            0 Vote for this issue
            Watchers:
            1 Start watching this issue

              Created:
              Updated:

                There are no open Gerrit changes