1. Run Convert Multiple AVI Files To JPG Files Software.
2. Click the "Add AVI File(s)" button to add files. Then an open file dialog will appear, hold CTRL or SHIFT key to select multiple files. To add all files in a folder, click "Add All AVI Files in Folder" then select a folder.
3. Select destination folder and the number of frames to be saved.
4. To start converting the selected files, click the "Convert To JPG(s)" button.