pub type heif_sequence_content_kind = c_uint;Expand description
Describes the intent of the encoded sequence content. Encoder plugins may use this to choose different default tunings (e.g. perceptual quality vs. rate-distortion) for slide-show-style image sequences vs. video.
Pass _auto to let libheif pick a value. Today libheif derives the kind
from the track’s handler type (pict -> image_sequence, vide -> video);
in the future it may use additional input signals (e.g. frame rate or
frame-to-frame similarity). Plugins never see _auto: libheif resolves it
to a concrete kind before passing the options to the encoder plugin.