When exporting a clip, what should you first do in the source monitor?

When exporting a clip, the initial step in the source monitor is to mark in and out points. This action defines the specific section of the clip that you wish to export, ensuring that only the desired portion of the video is included in the final output. By establishing these points, you're able to control exactly what content will be rendered, facilitating a more efficient export process and preventing unnecessary footage from being included.

The remaining options, while important aspects of video editing, do not serve the primary purpose of preparing a clip for export. Changing the frame rate pertains to altering the playback speed of the video, which might be necessary in some contexts but is not the first step for defining the clip to export. Selecting effects to apply affects the visual presentation of the clip but doesn’t initially dictate what portion is being exported. Adjusting audio levels is crucial for ensuring sound quality but comes after determining the specific video segment to be exported. Thus, marking in and out points is the essential first step in preparing a clip for export.