minIInterval

Specify the minimum number of frames allowed between two IDR-frames in your output. This includes frames created at the start of a GOP or a scene change. Use Min I-Interval to improve video compression by varying GOP size when two IDR-frames would be created near each other. For example, if a regular cadence-driven IDR-frame would fall within 5 frames of a scene-change IDR-frame, and you set Min I-interval to 5, then the encoder would only write an IDR-frame for the scene-change. In this way, one GOP is shortened or extended. If a cadence-driven IDR-frame would be further than 5 frames from a scene-change IDR-frame, then the encoder leaves all IDR-frames in place. To use an automatically determined interval: We recommend that you keep this value blank. This allows for MediaConvert to use an optimal setting according to the characteristics of your input video, and results in better video compression. To manually specify an interval: Enter a value from 1 to 30. Use when your downstream systems have specific GOP size requirements. To disable GOP size variance: Enter 0. MediaConvert will only create IDR-frames at the start of your output's cadence-driven GOP. Use when your downstream systems require a regular GOP size.