MediaErrorDialog
Non existing mp4
Custom error code for custom media elements
Error 2 (MEDIA_ERR_NETWORK)
Error 3 (MEDIA_ERR_DECODE)
Error 4 (MEDIA_ERR_SRC_NOT_SUPPORTED)
Error 5 (MEDIA_ERR_ENCRYPTED)
Error 2 with custom message via error-2 slot
This is a custom message