The screen goes black while switching image to video.

The playback of image is finished, but the video has not started playing because video loading is slow.

When all the media items in an inserted playlist have expired, a black screen is displayed during the insertion period.

Special processing was not implemented for media expiration.

After streaming media is switched to other media, the sound of the streaming media does not disappear.

Special processing was not implemented for the sound of streaming media.