The question asks to identify which of the listed items are used for video file compression.

Video Compression Technologies Explained

1. MPEG

MPEG (Moving Picture Experts Group) is a widely recognized standard for audio and video compression. Various MPEG standards like MPEG-1, MPEG-2, and MPEG-4 are commonly used to reduce the size of video files while maintaining acceptable quality.

2. P*643

While not a standard industry name, in the context of this question and given the provided options, 'P*643' is considered a method applicable to video compression. It might refer to a specific, less common codec or potentially a variation or typo of standard codecs like H.263 or H.264 (AVC), which are fundamental for video compression.

3. Indeo

Indeo is a proprietary video codec developed by Intel. It was used for video compression and playback, particularly popular during the 1990s. Therefore, it serves the purpose of video compression.

Conclusion on Video Compression

Based on the understanding that MPEG and Indeo are established video compression technologies, and accepting P*643 as intended within the scope of this question, all three items listed can be used for compressing video files. Therefore, the correct option includes all three.