Yes, "Visaranai" is based on a true story. The film, directed by Vetrimaaran, is inspired by the novel "Lock Up" written by M. Chandrakumar, which recounts the harrowing experiences of four men who are wrongfully arrested and tortured by the police in Tamil Nadu. The story highlights issues of police brutality, corruption, and the flaws in the justice system. It received critical acclaim for its realistic portrayal of these serious social issues.

"Visaranai," directed by Vetrimaaran, is widely regarded as a powerful and impactful film. Based on true events and the novel "Lock Up" by M. Chandrakumar, it explores themes of police brutality and systemic corruption in India. The narrative is gripping, with strong performances, particularly by Dinesh, and a realistic portrayal of the struggles faced by the protagonists. The film received critical acclaim and won several awards, making it a significant piece in contemporary Tamil cinema. Overall, it is considered a must-watch for its social commentary and storytelling.

You can legally watch the movie "Visaranai" on various streaming platforms, depending on your region. As of now, it is available on platforms like Amazon Prime Video and Netflix in certain countries. Additionally, you might find it for rent or purchase on services like Google Play Movies or YouTube. Always check the availability in your specific location, as licensing agreements can vary.

"Visaranai," directed by Vetrimaaran, won two National Film Awards at the 63rd National Film Awards in India. The film received the awards for Best Feature Film in Tamil and for Best Supporting Actor, which was awarded to Samuthirakani. The movie, released in 2015, is based on true events and highlights issues related to police brutality and the judicial system in India, earning critical acclaim for its storytelling and performances.