gopClosedCadence
Specify the relative frequency of open to closed GOPs in this output. For example, if you want to allow four open GOPs and then require a closed GOP, set this value to 5. When you create a streaming output, we recommend that you keep the default value, 1, so that players starting mid-stream receive an IDR frame as quickly as possible. Don't set this value to 0; that would break output segmenting.