KMPlayer vs QMPlay2

KMPlayer is a media player for Windows, macOS, iOS, and Android, with network playback, subtitles, hardware acceleration, and 4K playback. Listed formats include AVI, MP4, MKV, MOV, WMV, FLV, MPEG, MP3, AAC, FLAC, WAV, SRT, ASS, SSA, and WebVTT. The mobile app can transfer files between a phone and PC on the same Wi-Fi network and includes cloud playback. Users can change subtitle size, color, and position, and adjust playback speed from 0.25x to 4x. Video can play in the background, and YouTube playback is available by entering a URL. Premium features for Android include magnet playback, GIF creation, media cropping, and MP3 conversion. KMPlayer 64X supports 4K, 8K, UHD, and 60FPS video, and the PC versions are available in 32-bit and 64-bit editions as well as Mac. The player is presented as free for PC and mobile; the pricing note lists a free plan and a 3-day trial. No price is listed for Premium.

QMPlay2 is a free video and audio player for Windows, Linux, and macOS. It handles formats and codecs supported by FFmpeg, along with Audio CDs, raw files, and chiptunes. Playback features include subtitles, network playback, hardware acceleration, spherical view, automatic interlace detection, and deinterlacing filters. A YouTube browser is included; playback requires yt-dlp, which QMPlay2 can download automatically. The documentation also describes using Streamlink as the player and an optional Last.fm extension for scrobbling with a configured account. Hardware video decoding options vary by system and include Vulkan Video, NVIDIA CUVID, Windows DXVA2 and D3D11VA, Linux/BSD VA-API, and macOS VideoToolBox. On Linux and BSD, multimedia-key controls and MPRIS2 commands are documented. QMPlay2 is licensed under LGPL-3.0. The latest macOS release requires Big Sur or later. Windows XP builds and the offline Windows build have stated service limitations, and the latest release page says the experimental Android package and Linux AppImage are no longer provided.