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>HEIC (image encoding) is available without royalties

As stated by that Wikipedia article, HEIF is the royalty-free container. HEIC means the content is encoded with HEVC, which makes it not free.

> HEIC (image encoding) is available without royalties

Ah, ok, thanks!

> When containing images and image sequences encoded in a particular format (e.g. HEVC or AVC) its use becomes subject to the licensing of patents on the coding format.

I'm not sure what you're trying to say with that quote? As I mentioned, HEVC is subject to licensing costs. If you try to wrap your HEVC video content in an HEIC container, you don't suddenly get to skip paying the original licensing costs.

He's trying to remark the fact that HEIC = HEIF(HEVC) => non-free. See my other reply to your first comment. Note that HEVC doesn't necessarily mean video. It can be used to compress still images, as it's the case of Apple devices.