Usually AAC or AC3 for surround sound compatibility.
: You can purchase physical copies through retailers like Amazon or GRUV. Blu-ray versions almost always include 1080p video and multiple high-fidelity audio tracks. Lucy 2014 Dual-audio 720p Web Rip Movies
If you want a legal and hassle-free 720p dual-audio experience: Usually AAC or AC3 for surround sound compatibility