Vitamio can play videos in most formats, but this one is a bit big, and there are many so files in it. The official document says that there is a way to lose weight. I tried, but it didn't work. It's just a small Demo using vitamio, and the set meal is 10M after completion. If online video can be played directly on the computer browser, you can use this to play and buffer it. Our project also has online video playback. We originally planned to use vitamio, but it was too big. After packaging, the apk increased by 10M, and then I changed it to universalVideoView, which can also be used on play online, which has a buffering effect, mainly because the apk is not big after packaging. If playing online video is demanding and doesn't care about the size of APK, you can use vitamio. If you just want to play online, it is enough to suggest universalVideoView!