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电影密钥是一个经过加密的XML文件。是需要拷贝到数字电影放映服务器中，配合影片进行解密放映的一个文件。密钥文件包括目标影片密钥生效的起止时间、数字电影放映服务器序列号、数字电影包（DCP）的通用唯一识别码（UUID）等信息。一个密钥文件只对应一部影片和一台数字电影放映服务器；服务器在解码数字影片数据时会验证密钥文件的哈希值，以确保放映的合法性，保护影片版权。


电影数字拷贝加密传输、运送唯一的目的就是版权保护。我们通过中数、华影聚合平台或者国家数字中心（KDM）下载的密钥文件，都使用了同一标准的密钥文件命名规则（Digital Cinema Naming Convention[数字电影命名约定]），对于这些规则的准确理解可以使得我们在阅读文件名时，即可了解很多必要的和目标影片相关的信息。


电影密钥文件名示例：


k_NAME-OF-MOVIE_CONTENT-TYPE_EN-XX_51-EN_THEATRE-NAME_KDM-ACTIVE-DATE_KDM-ACTIVE-DATE_KDM-INACTIVE-DATE_CREATION-FACILITY_PACKAGE-TYPE [_US-GB][_Additional-Information].zip


k_NAME-OF-MOVIE_CONTENT-TYPE_EN-XX_51-EN_SERIAL-NUMBER_KDM-ACTIVE-DATE_KDM-ACTIVE-DATE_KDM-INACTIVE-DATE_CREATION-FACILITY_PACKAGE-TYPE [_US-GB][_Additional-Information].xml

9/12/18, 8(40 AMA ppendix 7 Projector Aspect Ratio Page 1 of 2 http://isdcf.com/dcnc/home/appendix-7-projector-aspect-ratio.html Digital Cinema Naming Convention Back Next ISDCF Home Appendix #7Projector Aspect RatioD2C 中国


The Projector Aspect Ratio ("F", "S" or "C") indicates the pixel array size at which the projector should beset. It does not necessarily indicate the aspect ratio of the image -- or theatre masking instructions -- since often times content such as trailers may be lette boxed or pillar boxed.


The choices are:


F= Flat (1.85:1) Pixel array size: （遮幅）

1998 x 1080 = 2k

3996 x 2160 = 4k


S= Scope (2.39:1) Pixel array size: （宽银幕）

2048 x 858 = 2k

4096 x 1716 = 4k


C= Full Container (1.90:1) Pixel array size: （IMAX全画幅）

2048 x 1080 = 2k

4096 x 2160 = 4k



示例：


ThankYouService_FTR-4_S_EN-XX-CCAP_US-R-INT-TD_51-HI-VI_2K_UP_20170928_DTB_SMPTE_OV


("Thank You For Your Service”. Feature Version 4. Scope. English Language with Closed Captions. US Rated R/International Texted. 5.1 Audio with Assisted Listening and Audio Description tracks. 2K Resolution. Universal Pictures. Packaged on September 28, 2017, at Deluxe Technicolor Burbank. SMPTE Standard. Original Version package type.)


("荣归以后”. 正片第四版. 宽银幕. 英语原文字幕. 美国R级/国际通用版. 带有辅助收听描述性音频的5.1声道音轨. 2K 画幅. 环球影业出品. 于2017年9月28日, 在Deluxe Technicolor Burbank打包. SMPTE 标准. 打包类型原始版本.)


* SMPTE 代表电影和电视工程师协会，是大多数数字电影标准工作的标准机构。（SMPTE指定的JPEG 2000配置文件由ISO标准化。）

International Texted对于通用国际版本，可将区域和评级代码替换为：INT-TD表示国际文本 INT-TL表示国际无文本


ThankYouService_FTR-4_S_EN-LAS_US-R_51-EN-HI-VI-CCAP_2K_UP_20171013_DTB_SMPTE_VF


("Thank You For Your Service”. Feature Version 4. Scope. English Language with Latin American Spanish subtitles. US Rated R. 5.1 Audio with English Assisted Listening & Audio Description tracks & English Closed Captioning. 2K Resolution. Universal Pictures. Packaged on October 13, 2017,at Deluxe Technicolor Burbank. SMPTE Standard. Version File package type.)


HappyDeathDay_FTR-9_S_QFC-XX-CCAP_CA_51-HI-VI_2K_UP_20171003_DTB_SMPTE_OV


(“Happy Death Day”. Feature Version 9. Scope. French Canadian Language with Closed Captions. Canada. 5.1 Audio with Assisted Listening & Audio Description tracks. 2K Resolution. Universal Pictures. Packaged on October 3, 2017, at Deluxe Technicolor Burbank. SMPTE Standard. Original Version package type.)


PitchPerfect3_FTR-7-DVis_F_EN-XX-CCAP_US-13-CA_ATMOS-71-HI-VI_2K_UP_20171103_DLB_SMPTE_OV


(“Pitch Perfect 3”. Feature Version 7 Dolby Vision. Flat. English Language with Closed Captions. US Rated PG13/Canada. Atmos Audio (with 7.1 backup audio) with Assisted Listening & Audio Description tracks. 2K Resolution. Universal Pictures. Packaged on November 3, 2017, at Dolby LA. SMPTE Standard. Original Version package type.)


未完，待补充。200206