You can easily fix this using manual synchronization shortcuts in your media player:
You can also search for Panchathanthiram on torrent sites like The Pirate Bay, 1337x, or RARBG. However, be cautious when using torrent sites, as they may pose security risks.
For the purest experience, look for SRT files uploaded by on OpenSubtitles—that version is widely considered the best English translation of Panchathanthiram on the web.
: Most subtitle downloads come in a compressed .zip format. Extract it to find the actual .srt file.