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2. Digital watermarking - Wikipedia

   en.wikipedia.org/wiki/Digital_watermarking

   A digital watermark is a kind of marker covertly embedded in a noise-tolerant signal such as audio, video or image data. [1] It is typically used to identify ownership of the copyright of such a signal.

3. List of films in the public domain in the United States

   en.wikipedia.org/wiki/List_of_films_in_the...

   In some cases, a film's copyright has lapsed because of non-renewal while the underlying literary or dramatic source is still protected by copyright; for example, the film His Girl Friday (1940) became a public domain film in 1969 because it was not renewed, but it is based on the 1928 play The Front Page; as a practical matter, the film could ...

4. Digital on-screen graphic - Wikipedia

   en.wikipedia.org/wiki/Digital_on-screen_graphic

   Watermarks present an issue when archival videos are used for a documentary that strives to create a coherent story. In some cases, watermarks are blurred or digitally removed if possible to clean up the picture. In the absence of visually perceptible watermarks content control can be ensured with visually imperceptible digital watermarks. [2]

5. Watermark (disambiguation) - Wikipedia

   en.wikipedia.org/wiki/Watermark_(disambiguation)

   Digital watermarking, a technique to embed data in digital audio, images or video . Audio watermark, techniques for embedding hidden information into audio signals; Watermark (data file), a method for ensuring data integrity which combines aspects of data hashing and digital watermarking

6. Digital rights management - Wikipedia

   en.wikipedia.org/wiki/Digital_rights_management

   Also included may be the file's publisher, author, creation date, download date, and various notes. This information is not embedded in the content, as a watermark is. It is kept separate from the content, but within the file or stream. As an example, metadata is used in media purchased from iTunes for DRM-free as well as DRM-restricted content.

7. Fraps - Wikipedia

   en.wikipedia.org/wiki/Fraps

   Fraps is proprietary and commercial software, but it is free to use for frame rate display and benchmarking, and free to use with limitations for video capture (30 second time limit, watermark) and screen capture (BMP format only).