Rodar literally means "to roll", but in the context of cinema, it means "to film" or "to shoot a movie". It's a versatile verb that connects directly to the song's central theme of a relationship being like a film.
In the lyrics, "Nuestra peli vuelve a rodar" (Our movie starts filming again) beautifully captures the idea of a new beginning for the couple's love story, as if they are getting a second chance to write a better ending for their cinematic romance.
"El Cine" uses a cinema as the image for a relationship that has ended. The singer leaves the house on an ordinary day, thinking she has moved on, and then the memories arrive without warning. She finds herself back in the cinema her partner once took her to, feeling them beside her in the dark.
The chorus is where the metaphor lands. The film is over, the cinema has closed, and she is done performing. What was once a story she could watch from a seat is now real life, and she refuses to accept that it ends badly. There has to be a better ending.
The second half turns hopeful. She is sure there will be a sequel, she promises to do her part, and she describes their love as a work of art: the kind that wounds you and is forgiven anyway, the kind that hurts while you cry on the inside. A restless heart falls in love again, so she is going to call, whatever the hour.
The closing lines answer the chorus. They meet again, their film starts rolling, and they get to write the better ending together. It is a song about refusing to let a love story finish on its saddest scene.