How can you export a portion of a clip from the source monitor?

To export a portion of a clip from the source monitor, marking in and out points is the essential first step. This allows you to specify the exact segment of the clip you want to export, ensuring a precise selection. Once you have marked these points, using the keyboard shortcut Ctrl-M will open the export dialog for that specified segment. This method provides a clear and efficient way to export just the desired portion, streamlining the workflow in the editing process.

The other options do not directly facilitate exporting a specific segment from the source monitor. Video rendering options are more focused on the overall performance of playback and do not pertain to exporting segments. Right-clicking and selecting export typically relates to different functionalities or broader exports rather than specific portions directly from the source monitor. Dragging the clip to the timeline is a helpful maneuver for the editing process but does not directly result in exporting a specific part of that clip. Thus, marking in and out points followed by the shortcut is the correct and most efficient approach for this task.