Here are some possible antonyms depending on the context:
If "film" refers to the medium:
* Digital: This is the most common opposite, especially in the context of movies.
* Live: This refers to a performance that is not recorded.
* Stage: This refers to a theatrical performance.
If "film" refers to a specific movie:
* Documentary: This refers to a factual film.
* Fiction: This refers to a made-up story.
If "film" refers to the material:
* Digital: This is the opposite of film stock.
* Paper: This refers to a different type of material for recording images.
To give you the most accurate antonym, please provide me with the sentence or context where you are using the word "film".