Which of the following file extensions is generally not used for storing video files ?

Correct option is C

The file extension .pdf (Portable Document Format) is generally not used for storing video files. PDF files are designed primarily for documents that contain text, images, and layouts, not for video storage. While modern PDFs can embed multimedia, they are not standard video file formats. In contrast, extensions like .avi, .flv, and .mp4 are specifically designed for video content.
Important Key Points:
1. Purpose of .pdf: PDF is mainly used for documents, reports, and printable content.
2. Video File Formats: Extensions such as .avi, .flv, and .mp4 are standard formats for storing and playing video files.
3. Why .pdf is not considered a video format? It lacks native video-streaming capabilities and is not optimized for video compression or playback.
4. Common Uses of .mp4: Online streaming, mobile videos, and multimedia sharing.
5. Common Uses of .avi and .flv:
· .avi → General video playback
· .flv → Web-based video streaming (Flash Video)
6. Always identify the primary purpose of the file format.
Knowledge Booster:
· Why option (a) .avi is incorrect? .avi is a widely used video file format.
· Why option (b) .flv is incorrect? .flv is a Flash video format, commonly used for web videos.
· Why option (d) .mp4 is incorrect? .mp4 is one of the most popular and efficient video formats today.