You can load sequences at natural, 75%, 66%, 50%, 33%, 25%, or Custom resolution. This lets you work with smaller, faster representations of very large images.

Selecting sequences does not overwrite the custom image size fields (Image Size ▸ Custom). Normally the fields automatically update with the resolution of the selected sequence.

Sequences are normally interpreted as Single Images if there is no frame number in the filename, otherwise they are interpreted as an Image Sequence. This menu allows you to manually choose which type to open.

The frame range and frame step to load from a sequence. You can use this to load a subrange of a sequence, and/or every nth frame, to save space.

The Frame Range fields do automatically update when you select a sequence.

Frame rate of the selected sequence. The initial value is Houdini’s global frame rate.

Flips loaded images vertically.

Caches the sequence for quicker playback.