| Value | Description |
|---|---|
| iefcNever | GIF frames are not cached |
| iefcAuto | The previous GIF frame is cached when playing or seeking a multi-frame GIF |
| iefcAlways | The previous GIF frame is always cached (so subsequent loads of the current or next frame are much faster) |
| iefcAllFrames | All frames of the GIF are cached on first load. This will make the initial load much slower, but adhoc access to any frame will be instaneous |