dsppV4.1.zip is a release file of the Minecraft resource pack Surfliner's IR DSP&P Pack, made for Minecraft 1.12.2. It was published on November 11, 2022 and is 2.3 MB in size. For the full description, screenshots and every other version, visit the Surfliner's IR DSP&P Pack resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.