Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_1251878_3 ( frame_size VARCHAR, maximum_fps VARCHAR )

### Question ###
What size is a 30 frames per minute

### Accurate SQL ###

SELECT frame_size FROM table_1251878_3 WHERE maximum_fps = 30