If you want to convert MKV to TS, you are probably trying to burn the MKV file to a playable DVD. TS in itself is not a format, but a suffix to the video folder found in the DVD file structure. When you are trying to convert MKV to TS, you are actually trying to convert it into a VOB file. There are many programs available that can do this.
MKV stands for matroska video. It is a container file format that stores audio, video, and subtitle streams. Unlike many other media formats and multimedia containers, MKV is entirely open source. Software to create or edit MKV can be created without having to pay royalties to any creator or company, and anyone can include MKV videos in their product free of charge.
TS is not a video format at all, but instead part of a folder name that is used to store video information used for DVDs. All video information on a DVD is stored in the VIDEO_TS folder, and the videos themselves are video object, or VOB, files. VOB files are specially designed MPEG files made specifically for DVDs. Most DVD videos contain multiple VOB files, each less than 1 GB in size.
If you are looking for a program that can convert MKV to TS, you are actually looking for a program that can convert MKV to VOB or to DVD. Most of these programs can also burn the converted files to a disc that can play in a stand-alone DVD player or DVD drive just like a store-bought DVD video.
One benefit of converting MKV to TS is that both support multiple audio streams and subtitles. If an MKV has more than one audio track or an optional subtitle stream, all that information will go with it when you convert it to a DVD-compatible format. For some, this ability makes MKV one of the preferred formats for media creation and burning to DVD.
Unfortunately, support for the MKV file format is limited when compared to more well-known multimedia containers like MP4 and AVI. While Windows' built-in DVD maker supports converting those video formats to DVD, it does not support MKV. If you want to convert MKV to TS, you will have to search for third-party software.
There are many programs that claim to convert MKV to TS, but do some research before downloading or purchasing any MKV converter. Many media conversion programs come pre-packaged with spyware or adware, and some don't work at all. Read reviews and only download programs from trusted websites.
Once you have a program that can convert MKV to TS, you should keep a few things in mind. Note the resolution of the MKV file. If it is below 720 x 480, then it is going to look blocky, or pixelated, if you burn it to DVD. Also note the size of the MKV file. If it is very large, more than 4.7 GB, you might not be able to convert it to a VOB file that will fit on a single-layer DVD. For exceptionally large MKV files, burn them to dual-layer discs, which can hold 8.5 GB of data.