A video tag is embedded in the video address returned by the background. The video is encoded by mpeg4. The address is as follows: http://135...:8083/upload/2018/03/20/7a039246ae8b41d90ae74519**.mpeg4, some videos can be played, and some videos only have progress bars but no pictures.
I would like to ask the video addresses returned by the backend are all mpeg4 encoded, why some can be played and others cannot be played? And mainstream browsers can"t play mpeg4 videos that Google and Firefox can"t play. Win10 has its own browser. I"ve tried to play mpeg4 videos that Google and Firefox can"t play.
