Avengers.infinity.war.2018.2160p.4k.bluray.x265... Official

While 4K Blu-ray files are huge, the x265 compression makes these files manageable for high-end streaming or local NAS storage, offering the best ratio of quality-to-size. Visual and Audio Performance Highlights

The filename may not specify audio, but any proper release should include the original lossless or high-quality lossy track. The 4K BluRay features a Dolby Atmos soundtrack (in English). An ideal encode will either: Avengers.Infinity.War.2018.2160p.4K.BluRay.x265...