已经有其他答案引述了《著作权法》上的规定。我再补充一点，中国电影资料馆作为国际电影资料馆联合会（Fédération Internationale des Archives du Film, FIAF）的成员，也必须遵守FIAF的伦理守则。
下面是相关条文规定：
3. Exploitation Rights:
3.1. Archives recognise that the materials in their care represent commercial as well as artistic property, and fully respect the owners of copyright and other commercial interests. Archives will not themselves engage in activities which violate or diminish those rights and will try to prevent others from doing so.
3.2. Unless and until such commercial rights in that items from that collection shall have expired or been either legally annulled or formally vested in their institution, archives will not exploit any those items from their collection for profit.
3.3. To accord with these principles, archives screening material from their own collections will respect the following conditions:
· screenings will have a cultural or educational framework;
· screenings will not knowingly conflict with concurrent or imminent commercial exploitation of the same material;
· screenings will take place within venues controlled or recognised by the archive’s institutions and directed to the principles set out in this code;
· screenings will be non-profit making (which is not to say that screenings will necessarily be free, but that where an entry fees is are charged the income deriving from such fees will be demonstrably linked to the preservation and cultural mission of an archive, and not devoted to the commercial reward of any individual, group or organisation).
3.4. Archives will not intentionally be party to transactions (whether relating to screenings, to acquisitions or of any kindto any other use) which infringe the rights of others or which compromise the reputation and integrity of themselves, their staff, their institutions or the FIAF film archive movement in general.
我简单翻译一下，不精确，不完整：
3.1 资料馆要承认馆藏品同时拥有商业和艺术的属性，要尊重版权方的商业利益，不要做侵犯相关权益方利益的事。
3.2 除非版权失效，资料馆不得通过放映牟利。
3.3 资料馆平时放映自身馆藏影片必须遵守以下原则：
(1) 要保持在文化和教育的框架内；
(2) 不得和正在进行和即将进行的商业放映相冲突；
(3) 放映必须在资料馆的场所内进行；
(4) 放映必须是非营利性质（并非指必须免费，但门票收入要回馈于档案的保护，不得用于个人和组织的奖励）。
3.4 不得参与侵犯他人利益的交易，不得有损其自身或FIAF的声誉。
来源：知乎 www.zhihu.com
作者：magasa
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