One of the best Yosemite/Mavericks H.265 Converter from the market so far is Pavtube iMedia Converter for Mac, which is recently upgraded to support H.265 encoding and decoding and it can be taken as a completely professional H.265/HEVC encoder, decoder, player and editor. Since QT player can work with H.264 MP4, MOV, M4V videos well, to get H.265 files playable in QuickTime Player, a quick fix is to convert H.265 to QT Player readable format for playback easily. Do you have some HEVC/H.265 files saved on your computer, and wonder how to make H.265 files playable in QuickTime player on Mac OS Sierra/El Capitan? You’ve come to the right place. However, many devices and applications like QuickTime player are still need time to support the new codec. H.265 or High Efficiency Video Coding (HEVC) is the latest generation video compression standard which compresses a video file into smaller package, making it easier to store or transmit.