For a true test of your search, try these films. The surround mixing is exceptional.
From that day on, the Tamil Cinema Squad became known among their friends and family as the go-to group for expert recommendations on the best Tamil movies with 5.1 Dolby Digital audio. Their passion for cinema, audio quality, and cultural heritage had brought them closer together, and they looked forward to many more movie nights filled with excitement, discussion, and a deep love for Tamil cinema.
Downloading the file is only step one. You need the hardware to decode it.
These platforms officially distribute movies with true 5.1 Dolby Digital (and sometimes Dolby Atmos). You cannot "download" for offline use permanently, but you can download within the app for offline viewing.