check https://stackoverflow.com/questions/25131906/mp4-file-not-playing-in-chrome use ffmpeg -i input.mp4 -vcodec h264 output.mp4 to process video if necessary
check https://stackoverflow.com/questions/25131906/mp4-file-not-playing-in-chrome use ffmpeg -i input.mp4 -vcodec h264 output.mp4 to process video if necessary