tvOS: unrecognised property keyLoading shader: 36 positionTextureColor_vs, videoTextureNV12_fs

[katwdev91]

When trying to play MP4 video on tvOS (simulator) with ax::ui::VideoPlayer, I get the error message in the debug log:

unrecognised property keyLoading shader: 36 positionTextureColor_vs, videoTextureNV12_fs

The screen remains black. The app also freeze.

Running on Mac is fine. However running on another Mac machine would also be black screen (there's no unrecognised property message) sometimes, but the app doesn't freeze, the video player could also receive touch event for pausing.

Does anyone know what could be the cause of this?

[rh101]

Are you able to run the cpp-tests app on all the machines and simulators, and check if the video playback tests in that work correctly?

[katwdev91]

Yes, since I'm unable to control the menu on Apple TV, I made a few modifications in the cpp-tests (TestController::traverseTestList and TestController::traverseTestSuite) to get it running with auto test, and plays the online video.
It freezes at the first frame and the status shows "PLAYING" for both TV device and simulator. I run the exact same code on Mac and does not have any issue playing the video.