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s->point_cache= av_malloc_array(s->cache_allocated, sizeof(*s->point_cache)). Size of Point is at least 22 bytes.s->point_cache =7680*4320*3*22` =2189721600. The size is grater than MAX_INT (2147483647). It looks likeav_malloc_arrayis limited to MAX_INT size (I don't know if the limitation is a bug). In case you want to fix the sources... replaceav_malloc_arraywithmalloc.