Use the Public Domain Calculator . If the film is pre-1960 and the producer/director died before 1962, it is likely free to share.
"Timeless Classics: An Index of Old Bollywood Movies that Shaped the Industry" index of old bollywood movies work
This is the most critical part of understanding the keyword. Do these indexes work as in function? Yes. Do they work as in legal streaming? Not usually. Use the Public Domain Calculator