Which extension can video files have when using a DVR?

Which extension can video files have when using a DVR?

• A. .mp4 or .avi
• B. .jpg or .png
• C. .wav or .mp3
• D. .txt or .doc

Answer: (A)

The correct answer indicates that video files recorded using a Digital Video Recorder (DVR) can be saved in formats such as .mp4 or .avi. These file extensions are commonly associated with video content, which ensures compatibility with various media players and video editing software. Both .mp4 (MPEG-4 Part 14) and .avi (Audio Video Interleave) are widely recognized formats for storing video data and are used for compressing and delivering audio and video streams. This enables efficient storage and playback of recorded footage, which is crucial for the functionality of a DVR in surveillance applications. In contrast, the other options include file extensions that are not suitable for video data. The extensions .jpg and .png relate to image files, .wav and .mp3 pertain to audio files, and .txt and .doc are associated with text documents. Thus, they do not represent formats suitable for video content captured by a DVR. The focus on video file types in the correct answer directly aligns with the typical outputs generated by a DVR system in a CCTV context.

The correct answer indicates that video files recorded using a Digital Video Recorder (DVR) can be saved in formats such as .mp4 or .avi. These file extensions are commonly associated with video content, which ensures compatibility with various media players and video editing software.

Both .mp4 (MPEG-4 Part 14) and .avi (Audio Video Interleave) are widely recognized formats for storing video data and are used for compressing and delivering audio and video streams. This enables efficient storage and playback of recorded footage, which is crucial for the functionality of a DVR in surveillance applications.

In contrast, the other options include file extensions that are not suitable for video data. The extensions .jpg and .png relate to image files, .wav and .mp3 pertain to audio files, and .txt and .doc are associated with text documents. Thus, they do not represent formats suitable for video content captured by a DVR. The focus on video file types in the correct answer directly aligns with the typical outputs generated by a DVR system in a CCTV context.