it took quite a few days to realize that something wrong is going on with old devices with API lower than 23 and I searched intensively but without an answer. So when I found my answer I thought that it's worth sharing with the community
1 Answers
I used multiple emulator versions but the weird thing is that some devices couldn't either load the video (sudden stop) or it loads it till showing the thumbnail and it freezes, so the answer is basically that nothing is wrong with ExoPlayer, it's just the emulator that cannot play the media with an emulator with lower API than 23 due to a decoder issue but mainly on a usual use ExoPlayer will function properly with android devices of 16+ API. you can check the DOCUMENTATION for more details.
Related