I am working on a simple AR app to run on Andorid, it simply replaces the target image with video and nothing fancy. It is Vuforia 9.3.3 with Unity 2019.4.6f1 , The app seemed working good when it is started but after pausing (or switched to other app) for a while, the video did not play but just displayed a black screen although it still recognized the target image well.
I already enabled 'Play on Awake' and 'Loop', and disabled 'Wait for first frame' and 'Skip on drop'. I also lowered the frame rate of video to 15fps only but no luck.
Can you help to point to me any solutions ?