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Ideas to display animation with transparency atop video

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  • C Offline
    C Offline
    ChrisTof
    wrote on last edited by
    #1

    I am looking for ideas on how to display animations atop video - the video is running fullscreen in the background and I display some small animations (that have a transparent background) atop of it.
    To achieve that I can use GIFs but the limited colours range decreases the quality of the animation.
    I hoped to use Lottie, but it is not fully supported yet.

    What are the other options?

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    • K Offline
      K Offline
      kkuzawska
      wrote on last edited by
      #4

      Maybe try using AnimatedSprite https://doc.qt.io/qt-5/qml-qtquick-animatedsprite.html
      If the animations are simple (limited number of frames) and looped it's a good option. You just need to export your frames to one merged .png file . I dont' know what size of the animation you want. How much pixels of width and height?
      Just keep in mind, that merged file cannot be too wide for qt animation engine - so the best option is to merge it to square . For example: instead of making 1x20 frames .png file , make 4x5 frames .png file.

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      • GrecKoG Offline
        GrecKoG Offline
        GrecKo
        Qt Champions 2018
        wrote on last edited by
        #2

        What kind of animations?

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        • C Offline
          C Offline
          ChrisTof
          wrote on last edited by
          #3

          Simple animations, e.g.: https://lottiefiles.com/11352-bookmark-favourite-button

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          • K Offline
            K Offline
            kkuzawska
            wrote on last edited by
            #4

            Maybe try using AnimatedSprite https://doc.qt.io/qt-5/qml-qtquick-animatedsprite.html
            If the animations are simple (limited number of frames) and looped it's a good option. You just need to export your frames to one merged .png file . I dont' know what size of the animation you want. How much pixels of width and height?
            Just keep in mind, that merged file cannot be too wide for qt animation engine - so the best option is to merge it to square . For example: instead of making 1x20 frames .png file , make 4x5 frames .png file.

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