Are you trying to understand why you are replacing your USB flash drive every 30 days?
Are you only running a short 30 second video and still having USB drives fail?
Well your problem is not your video but the type of USB drives you are using. All USB drives are not created equal. Industrial flash SLC USB is made using SLC flash and not consumer grade flash memory. Built using error correction and wear leaving algorithms for error free operation. Offering high availability.
Nothing worst than a customer walking in a retail store to see a black screen.