Saves the currently displayed image of the pipeline in preview to the given location, in the specified dimensions and format.
| this |
A Pipeline in gst_state_playing or gst_state_paused |
| width |
The requested pixel width of the image, or -1 to use the native size |
| height |
The requested pixel height of the image, or -1 to use the native size |
| format |
The desired mime type (for example, "image/jpeg") |
| location |
The path to save the thumbnail to |
|
true if this's current image preview was successfully saved to
|