This indicates the source of the video was a high-quality BluRay disc, ensuring that even at lower resolutions, the colors and contrast remain superior to standard DVD rips.
You can often find the film for a small fee on YouTube Movies, Apple TV, or Google Play. the housemaid 2010 hindikorean 480p bluraymkv link
The Matroska (MKV) format is popular because it can hold multiple audio tracks (like the original Korean and a Hindi dub) and multiple subtitle files in a single file. How to Watch "The Housemaid" Legally This indicates the source of the video was