- SlashingArbiter
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- Exalted Legendary Member
Once you play a firefight or campaign mission, the film is temporarily stored in the "Recent Films" cache in the Theater lobby. You have to navigate to "Recent Films", then press X to save the film to your console's hard drive. Once you do this, you can upload the saved film to your file share - you cannot upload recent films to your file share.
The Recent Films cache tends to clear itself when you go back to the Xbox Dashboard, so make sure you save the film before you do that.