proc av_dynamic_hdr_plus_alloc(size: ptr csize_t): ptr AVDynamicHDRPlus {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}

proc av_dynamic_hdr_plus_create_side_data(frame: ptr AVFrame): ptr AVDynamicHDRPlus {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}