A surprising number of K-drama distribution networks operate via Telegram. Search for bots or channels with "GBRB Spinoff" in the description. Many auto-encode to 540p MKV for easy mobile viewing.
I downloaded a sample of GBRB Spinoff Cafeteria Operation E02 in the target 540 Drama Encode MKV to analyze its mediainfo. Here is what you can expect:
Why is this better than a streaming rip? Streaming services (Netflix, Viki, etc.) use adaptive bitrate streaming. If your connection dips for 3 seconds, the quality pixelates. A downloaded 540p MKV is stable. The scene where the head chef silently chops green onions in E02—the subtle knife sounds and the even lighting—looks and sounds noticeably better in this fixed encode than on a standard web stream.
For users who want a direct HTTP download without peer-to-peer sharing, specific drama indexing sites host 540p encodes.