Fixing problem about not working android 5.x native player

The problem I face in my project is that it is ok to play video(hls,m3u8) on my 4.x android web browser(chrome) while on my 5.x, doesn't. Please visit the website following and check with your devices. [login to view URL] id:ks0617 pw:suhakbank47fh#^2*! (click on 동영상강의 from the top menu -> click on any accodian -> click on blue button read "동영상 보기") Here's the similiar questions and answers others posted FYI. [login to view URL] Hers is the log message which I found in android studio when I click on the play button on the android&chrome. 06-16 17:54:12.931 10696-10696/? W/MediaPlayer: Couldn't open file on client side; trying server side: [login to view URL]: No content provider: [login to view URL] 06-16 17:54:12.936 194-29170/? D/NuPlayer: onSetVideoSurface(0xb3494e00, no video decoder) 06-16 17:54:12.970 194-29176/? I/NuCachedSource2: caching reached eos. 06-16 17:54:12.971 194-29171/? E/GenericSource: Failed to init from data source! 06-16 17:54:12.972 194-29170/? D/NuPlayerDriver: notifyListener_l(0xb36231e0), (100, 1, -2147483648) 06-16 17:54:12.972 10696-10710/? E/MediaPlayer: error (1, -2147483648) for your better understanding, it is web application playing on the android web browser.