QuickTime 4 Reference

InterlaceStyle

Some image formats support interlacing, in which image data is rearranged in some manner. A common use for this is in the PNG and GIF formats, which rearrange data so that low-resolution images can be displayed from incomplete data streams.

In QuickTime 4, the PNG graphics exporter supports the InterlaceStyle settings kQTPNGInterlaceNone and kQTPNGInterlaceAdam7 .