Extract text from Matroska stream files (MKS)
To convert MKS streams to another format, you need MKVToolNix or other Video software.
To convert other file formats to the "Matroska Subtitle Container" file type, you need software like MKVToolNix or a similar tool.
The .MKS file is a Matroska Elementary Stream container. It is primarily used to store independent subtitle data (like closed captions) or other raw media streams extracted from a master Matroska video file (MKV).
These files are typically generated and managed by multiplexing software like MKVToolNix and can be parsed by advanced media players such as VLC media player.
The main disadvantage of the .MKS format is its poor standalone compatibility. Because it is a binary container wrapper rather than a raw text file, you cannot simply open an .MKS file in a standard text editor to fix a typo. Furthermore, most smart TVs, web browsers, and hardware media players will completely reject a loose .MKS file if you attempt to load it as an external subtitle track alongside a movie.
To make these subtitles usable across modern devices, hardware players, and video editing software, you must extract and convert the .MKS file to a standard text-based format like SRT (SubRip), VTT (WebVTT), or ASS (Advanced SubStation Alpha). Converting to these formats strips away the Matroska binary wrapper and outputs only the raw timecodes and text.
Standard online document converters often fail to process .MKS files because they treat them as text, lacking the ability to demux a multimedia container. Fortunately, convert.guru handles this complexity natively. Just drag and drop your file to identify the format, view its internal structure, and convert it when possible.
Convert.Guru analyzes your MKS file, detects the exact format, and lets you read the text inside.
Users also converted SRT, MKV, XAPK, TSX, PNG, ZIP, TXT, AAE, SUP, G3D, EZD, TORRENT and DMP files.
If you want to convert MKS file to SRT, FPS, OBJ, FBX, DAE, 3DS, MAX, BLEND, MA, MB, C4D or STL, you can use MKVToolNix or similar software from the "Subtitle Stream Container" category. In the File menu, look for Save As… or Export….
To convert DWG, DAE, X3D, IGES, WRL, JT, SKP, 3DS, 3DM, OBJ, STEP or FBX files to MKS, try MKVToolNix or another comparable tool in the "Subtitle Stream Container" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our MKS converter.