: The mention of "patched" and specific codes/numbers could imply that the video or associated software has been updated or modified for compatibility, bug fixes, or to add features.
The term is not a file format but a catalog prefix. In the Japanese publishing industry, products are assigned a "JAN" (Japanese Article Number) or catalog number. For Takeshobo, the prefix TSDV- is standard for their DVD releases. For example, similar releases in the same series carry catalog numbers like TSDV-11856 and TSDV-11958. The presence of "tsdv" in the keyword signals to a collector that the source is a legitimate, mass-produced DVD, not a homemade or amateur recording. miyuu sasaki 13 pure smile 60fps tsdv 41431 mkvl patched
. Specifically, it appears to be a digital copy of her release titled "Pure Smile" Context of the Title Miyu Sasaki (佐々木みゆう) : The mention of "patched" and specific codes/numbers