Sets the name of the preset to be used in the profile.
This is the name that has been set when saving the preset. You can list the available presets for a specific element factory using `$ gst-inspect-1.0 element-factory-name`, for example for `x264enc`:
``` bash $ gst-inspect-1.0 x264enc ... Presets: "Profile Baseline": Baseline Profile "Profile High": High Profile "Profile Main": Main Profile "Profile YouTube": YouTube recommended settings (https://support.google.com/youtube/answer/1722171) "Quality High": High quality "Quality Low": Low quality "Quality Normal": Normal quality "Zero Latency" ``` }
| this | |
| preset |
the element preset to use |