To save one single Image in eBUS Player, you could click Tools->Save Current Image:
The image will be saved to default Picture folder and file format is BMP.
If you want to change target folder or file format, please take following steps:
Click Tools→Save Image Or Video
In the next dialog, check "Enable Image or Video Saving"
Change path of "Location to save images or video" to change folder, or
Remove the check of "Enable Image or Video Saving"
※Without remove the check, Player will start saving images continuously according to "Throttling options".