Also, consider the language differences. Indonesian is the main language in Indonesia, but there are many regional languages. How does the use of Sub Indo affect audience understanding if they're not fluent in Indonesian?
Potential sources: Look for articles or blogs discussing Sub Indo culture, interviews with Indonesian fans, maybe some academic papers on subtitled films in Southeast Asia. Spectre Sub Indo
I need to structure the essay with an introduction, body paragraphs covering different aspects (history of Sub Indo, specific analysis of Spectre's subtitles, cultural adaptation, legal issues, audience reception), and a conclusion. Also, consider the language differences