Secondly, if the video is normal, but there is only sound but no image in the mobile phone, it means that the mobile phone does not support this MP4 coding method (there are many MP4 video coding methods, such as divx, xvid, h264, etc. , but mobile phones usually support divx or H264 encoding). At the same time, if the video resolution is higher than the highest resolution supported by the mobile phone.

Solution: Use video format conversion software, such as format factory, to convert to MP4 format. When converting, open the output configuration. Select divx or H264 in the video coding line and 640*480 in the screen size line.

Third, you can download and install other video players to solve the problem that you can't play them.