Consider the following : 1. MPEG 2. P*64 3. Indeo Which of the above can be used to compress video files?

All three listed technologies are used for video compression. MPEG (Moving Picture Experts Group) is a widely recognized standard for digital video and audio compression, including formats like MPEG-1 and MPEG-2. P*64 (also written as p x 64) refers to the ITU-T H.261 standard, specifically designed for audiovisual services and videoconferencing over ISDN lines, where 'p' represents a multiplier of the 64 kbps channel. Indeo (Intel Video) is a proprietary video codec developed by Intel in the early 1990s, primarily used for desktop video applications and multimedia. These codecs utilize algorithms like motion compensation and discrete cosine transform (DCT) to reduce file sizes and bandwidth requirements while maintaining visual quality. Consequently, MPEG, P*64, and Indeo are all valid video compression formats.