One of the few apps that could play a video in MKV with the difference that the Bluetooth audio was accurate and at a higher volume level than other apps, I also found that it is one of the few that asks about permission access external devices such as Bluetooth headphones, I think that helps the sound through them to be fluid and the video codecs to reproduce it well. I've tried other apps and they didn't open the video or they opened it but the sound couldn't be heard or it was choppy. Infuse has very good codecs and is well updated, which is why it works smoothly for me. Not to mention that the minimized player option is quite useful too…! Highly recommended, I have been using it for years and they are still great!