====== FAQ: Can I convert a large stack into .avi, .gif, QuickTime without loading it? ====== **Some stacks are too large to fit in RAM to be loaded and saved in an animation format. How do I overcome this?** Wayne provided this answer in the mailing list:\\ With ImageJ 1.39k and later, you can frame-by-frame convert a large TIFF by opening stack it using **File>Import>TIFF Virtual Stack **and saving it using **File>Save As>AVI**, **File>Save As>Gif (animated GIF)** or **File>Save As>QuickTime Movie**. Set the frame rate in the **Image>Stacks>Animation Options** dialog.