In Settings > Video , change the "Chroma" setting to YUV or RGB 16-bit to reduce the strain on the GPU.

. Because KitKat lacks modern native codec support, stock video players on these devices fail to play modern files like MKV or high-definition MP4s. An standalone APK installation of VideoLAN's VLC media player solves this immediately.

This is the safest method. VideoLAN hosts older versions of their software.

Android 4.4.2 devices rely on older processor builds. When hunting for an APK file on trusted mirrors like Uptodown VLC History APKMirror VLC Hub

: Plays MKV, MP4, AVI, MOV, and Ogg with no extra codecs needed.