Video not show on mobile

[quanggdungg0609]

II am using the mediadevices library on a Raspberry Pi to stream video to a React application. The video displays normally on Chromium browsers on the computer, but on other browsers like Firefox or Safari, it does not display even though the connection is established and the video is being sent correctly. On mobile devices, the issue is similar: Firefox and Safari do not display the video, and Chrome on mobile also fails to display the video. I followed the example but changed the codec to VP8 (if left as H264, it does not display anywhere). I would appreciate any help from everyone.