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电影胶片的保存期限从4年到1250年不等,在外界环境原因或人为破坏等情况下,影片损坏可能造成褪色、画面剥落、霉斑、划痕、声道受损等问题。根据来自65个国家超过130家电影资料馆的数据统计,电影自诞生一百多年来的平均存活率仅为10%。大量的早期电影都面临不断遗失的尴尬境地,即使是在电影保护做得相当不错的美国,1950年代以前的电影有近一半去向不明。而中国1949年以前的电影绝大多数去向不明。
Films have a shelf life of 4 years to 1250. Damage to the film may cause fading, peeling, mildew, scratches, and vocal tract damage in the event of external environmental causes or vandalism. According to statistics from more than 130 movie archives in 65 countries, the average survival rate of movies over a hundred years after birth was only 10%. Lots of early films are facing the constant loss of embarrassment. Even in the United States, where film protection has done a good job, nearly half of the films before the 1950s were destitute. However, the vast majority of the films of China before 1949 did not reach their destination.