You can save a single frame from the current preview by first moving the current preview position until the desired frame is visible in the preview, then doing one of the following:
- Select Sequence -> Player -> Snapshot and selecting a resolution to take a snapshot of the sequence preview at that resolution.
- Select Clip -> Player -> Snapshot and selecting a resolution to take a snapshot of the clip preview at that resolution.
- Click the Take Snapshot button (camera icon) under the preview, or take a snapshot at a specific resolution by clicking the button's dropdown menu
The frame will be saved to the folder specified in Options -> Disk -> Save snapshots to. It will also be added as an image clip to the current project.
Alternatively, to save all frames of a sequence as a series of images, see Image Sequence in Saving, Sharing, or Burning a Video.