Bitrate mode (e.g., vbr, cbr).
Video codec used (e.g., H.264).
Human-readable label for the preset.
Maximum bitrate in kilobits per second.
Maximum frames per second as a fraction.
MIME type of the output media (e.g., video/mp4).
Unique identifier for the preset.
Primary use case for this preset.
OptionalprofileCodec profile (e.g., high).
Target bitrate in kilobits per second.
Whether the preset supports alpha channel.