Missing ABR renditions when using MediaConvert

Hello There, When using automated ABR, AWS Elemental MediaConvert sets up your adaptive bitrate (ABR) stack for you. MediaConvert chooses the right number of renditions and the resolution for each[1], based on the input video, you can modify the resolutions of the output by specifying the max resolution[2] in the output settings. MediaConvert won't create a rendition with a resolution larger than this[3].

ABR stack may include other resolutions that you do not specify in the job depending on the Max renditions setting. For example: If you specify 2 resolutions under Force include renditions, and specify 7 Max renditions, then 5 resolutions are automatically determined. This means that "auto" ABR will try and optimise the best resolution based on the input video. Since, the input is 4K, if you specify the other two renditions, the MediaConvert will optimise with highest resolution in the output.

As workaround you would also need to add the highest resolution i.e "3840 × 2160" in the Force include renditions including the other i.e 1080p, 720p. Please find the attached screenshot.

References :

[1] Using automated ABR in AWS Elemental MediaConvert - https://docs.aws.amazon.com/mediaconvert/latest/ug/auto-abr.html

[2,3] How automated ABR works - Settings that apply to renditions in the stack - https://docs.aws.amazon.com/mediaconvert/latest/ug/how-automated-abr-works.html#settings-that-apply-to-renditions-in-the-stack