AVC and REMUX (or web) are 2 things totally differents

AVC is video format
H264 or H265 is a codec

web/ remux/Bluray/ etc are appealing to video quality


Remux : untouched quality video
Bluray : 1 : 1 exact copy of bluray disc
web dl : web download
web rip : it's either screen recording or the stream is re-encoded

Re-encoded x265 movie means that a movie with x265 video codec is encoded again (generally to have a smallest file than original)