Download and install SWF to GIF Converter Mac, launch it and follow these steps.

Step 1. Load Video

Click "Add File" button to input Flash SWF files.

Step 2. Adjust Output Settings

Open "Profile" drop-down list and find Picture and Animation category, then choose Picture - GIF Animation Format as the output format.

Then you can set Image Resolution, Quality, Picture Capture Start Time, Duration on the right panel. You can also adjust all these settings in Profile Settings Window (click the upper right button to open), so that you can save settings as your own profile and use it more easily in the future.

Step 3. Start Capture

When all the above settings are done, click "Convert" button to start capture.

After a while, you will get animated GIF files from the original SWF file. SWF to GIF Converter Mac also enables you to convert SWF to other picture formats, such as BMP, JPEG, PNG, GIF, etc. It is the most powerful tool to batch capture pictures from SWF videos, allowing you to adjust capture duration, interval, image size, quality and other settings. Moreover, this tool is easy to use, and only several clicks are needed.

Tip: If you just want to capture several still pictures from SWF video, you can use the snapshot button under preview window on the lower right of the main interface, which enables you to preview video and quickly save current frame as image files.