Both platforms have "Music Video" sections with original theatrical 5.1 mixes. Because they are owned by studios, they have access to the actual Blu-ray masters, not "fixed" rips.
The search for "Tamil HD Video Songs 1080p Blu Ray 5.1 Fix Download 11" is a nostalgic rabbit hole. It represents a time when fans had to fight codecs, containers, and sync issues just to hear a mridangam properly.
Offers a 1920x1080 pixel grid, providing sharp details and vibrant colors essential for the grand set pieces of big-budget Tamil films.
Even if you find a perfect "Fix 11" file, you need the right hardware to appreciate 5.1 audio.