Is it necessary for AVVideoCompositionInstruction (custom) to have atleast one video asset track? If one needs to just generate video out of motion graphics and pictures, does one still need to add dummy video track added to composition first?
Is it necessary for AVVideoCompositionInstruction (custom) to have atleast one video asset track? If one needs to just generate video out of motion graphics and pictures, does one still need to add dummy video track added to composition first?