KMPlayer vs SMPlayer

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.

SMPlayer is a free media player for Windows, Linux, and macOS. It includes built-in codecs to play most audio and video formats without requiring external codecs. Listed formats include AVI, ASF/WMV/WMA, QT/MOV/MP4, RealAudio/RealVideo, Ogg/OGM, Matroska, MPEG-1/2, H.264, MPEG-4, MP3, AAC, AC3, and DTS. The player supports network playback, subtitles, hardware acceleration, and 4K playback. It provides a graphical interface for MPlayer and can also use mpv as its playback engine. SMPlayer remembers playback position and settings such as audio track, subtitles, and volume. Controls include playback speed adjustment, audio and video filters, audio and subtitle delay adjustment, and a video equalizer. It can play YouTube videos, search for subtitles through OpenSubtitles, and send local videos or online streams to Chromecast devices. The project is free and open source under the GPL, offers source code, and directs users to a forum for help and a bug tracker for reporting problems.