Answer for how to play a mp4 file？ Written by admin on 15 Mar 2015. Posted in this mp4 file is 29 secends long, when play rtmp://126.96.36.199/vod/ad.mp4 video ends, but audio loop, what’s problem? admin This information box about the author only appears if the author has biographical information. Otherwise there is not author box shown. Follow YOOtheme on Twitter or read the blog.