Rise - The media could not be loaded, either because the server or network failed or the format is not supported

Hi, was having the same problem. I managed to solve the problem by simplifying the video filename. Before it was C43_SEGES_M06_UN1_VA18_Como_emitir_uma_Nota_de_empenhoV2.mp4 and when I renamed it to va01.mp4 it worked =)