This stands for High Efficiency Video Coding (also known as H.265). It is a compression standard that allows a video to maintain "Extra Quality" while having a much smaller file size compared to older formats like AVC/H.264.
This confirms the audio track of the file is in its original Hindi language. cids02e01hevchindiwebdlworld4ufree extra qualityobser
This signifies the source of the video. A WEB-DL is a file losslessly ripped from a streaming service (like SonyLIV or Netflix). It is generally considered the best quality available because it has no on-screen channel logos or advertisements. This stands for High Efficiency Video Coding (also