Abigail Clayton独自一人生活，已将近20年没有离开她的公寓当她的邻居死亡，侦探Frank Giardello登门造访展开调查，她原本秩序井然的世界开始瓦解。 Abigail Clayton独自一人生活。一个人非常孤独。实际上，这位女继承人没有离开她的曼哈顿公寓已将近20年。当她年迈的邻居死亡促使纽约市警察局凶杀案侦探Frank Giardello登门造访展开调查，内心恐惧不安的Abigail Clayton看到那位侦探在她门外，询问她。Abigail Clayton曾试图收购现在空置的那个公寓以确保她的隐私，当新租户莉莲和查理搬进来时就更加烦恼了。Abigail Clayton焦急地从她的前门的安全窥视孔监视她的新邻居，但当她终于面对面地遇到了莉莲和查理时她原本秩序井然的世界开始瓦解，她庇护的存在也开始成为意外和恐怖的方式威胁着。 An heiress who's been shut inside her apartment building for nearly two decades is forced to confront her fears after one of her neighbors is killed and a detective arrives to begin the investigation. Abigail Clayton lives alone. Very alone. In fact, the attractive heiress has not left her Manhattan loft apartment for almost two decades. The famous daughter of a wealthy industrialist, Abigail disappeared from the prying eyes of the press and the intrusiveness of her family on her 18th birthday, the day she received her massive inheritance. During years of self-imposed isolation, Abigail has had contact with only two people-her building's Concierge, Klandermann, with whom she communicates via notes-and Dr. Raymond Fontaine, a longtime family friend and her sole confidant for most of her life. When the death of her elderly neighbor prompts NYPD Homicide Detective Frank Giardello to launch an investigation, the agoraphobic Abigail is distressed to find him outside her door, asking to question her. Having tried to acquire the dead woman's now vacant apartment to ensure her privacy... A reclusive Manhattan heiress finds her carefully structured world beginning to crumble after her elderly neighbor dies, and a young couple moves into the vacant apartment. On her 18th birthday, Abigail Clayton (Selma Blair) received a staggering inheritance from her late father, an affluent industrialist. That same day, Abigail also escaped the probing lenses of the paparazzi by sealing herself away from the world in her massive loft. Nearly twenty years later, the only people Abigail interacts with are Klandermann (Kevin Pollak) the Concierge, and Dr. Raymond Fontaine (Beau Bridges), a trusted family friend. One day, Abigail's elderly neighbor dies under mysterious circumstances, and Homicide Detective Frank Giardello (Giovanni Ribisi) comes knocking on Abigail's door looking for answers. Concerned that the open apartment could provide a perfect perch for prying eyes, Abigail inquires about purchasing it to no avail. Shortly thereafter, Abigail spies Charlie (Jason Lee) and Lillian (Amy Smart) moving into the apartment. In the weeks that follow, Abigail begins religiously using her peephole to scrutinize her new neighbors' every move. But she can't stay locked away forever, and the moment Abigail meets Charlie and Lillian in person, the nightmare begins. Abigail Clayton (Selma Blair) lives alone. Very alone. In fact, the heiress has not left her Manhattan apartment for almost two decades. When the death of her elderly neighbor prompts NYPD Homicide Detective Frank Giardello (Giovanni Ribisi) to launch an investigation, the agoraphobic Abigail is distressed to find him outside her door, questioning her. Having tried to acquire the now vacant apartment to ensure her privacy, Abigail is further upset when new tenants Lillian (Amy Smart) and Charlie (Jason Lee) move in. Abigail anxiously monitors her new neighbors from the safety of her front door's peephole, but her well-ordered world begins to unravel when she finally encounters Lillian and Charlie face-to-face and her sheltered existence becomes threatened in unexpected and terrifying ways.
（1）高清（High Definition），是我们目前相对比较熟悉的一个词语。高清是在广播电视领域首先被提出的，最早是由美国电影电视工程师协会(SMPTE)等权威机构制定相关标准，视频监控领域同样也广泛沿用了广播电视的标准。将“高清”定义为 720p、1080i与1080p三种标准形式，而1080P又有另外一种称呼—全高清（Full High Definition）。关于高清标准，国际上公认的有两条：视频垂直分辨率超过720p或1080i;视频宽纵比为16：9。
（2）标清（Standard Definition），是物理分辨率在720p以下的一种视频格式。
（3）超高清（Ultra High-Definition），这是我们今天的重点内容。来自国际电信联盟(International Telecommunication Union)最新批准的信息显示，“4K分辨率 (3840×2160 像素)”的正式名称被定为“超高清Ultra HD(Ultra High-Definition)”。同时，这个名称也适用于“8K分辨率(7680×4320像素)”。CEA要求，所有的消费级显示器和电视机必须满足以下几个条件后，才能 贴上“超高清Ultra HD” 的标签：首先屏幕最小的像素必须达到800 万有效像素（3840×2160），在不改变屏幕分辨率的情况下，至少有一路传输端可以传输4K 视频，4K内容的显示必原生，不可上变频，纵横比至少为16:9。 与此同时，电视行业里，同对高清电视机命名为HDTV一样，对于4K电视机的命名，美国消费者电子协会针对4K电视进行了一个官方的命名UHDTV，这个命名也就是超高清电视。
Ps: 720p格式，分辨率为1280×720p/60Hz，行频为45kHz 。
4K分辨率是1080p的4倍3840×2160 = 1920×2×1080×2
8K分辨率是4K的4倍7680×4320 = 3840×2×2160×2