AVPlayer blank video: playing sound but no video
问题 This question has the same problem, but the solutions didn't work. The AVPlayer sometimes plays a blank video: there is sound but no video. While blank videos were played, we printed the frame and status of the player. The frame was non-zero and was correctly set. The status was also readyToPlay . The play function is also invoked on the main thread. In other words, the frame for the player layer is valid, and the player is also ready to play. Yet no video appears, even though sound does. The