What is the proprietary format used for recording video on Sony and Panasonic cameras?

The correct answer, AVCHD, refers to a high-definition digital video recording format developed specifically for use in high-definition video cameras, particularly those made by Sony and Panasonic. This format was designed to support high-resolution video recording and has become a standard for many consumer and professional camcorders.

AVCHD stands for Advanced Video Coding High Definition, and it utilizes the H.264 video compression standard, which allows for high-quality video to be recorded at lower bit rates. This characteristic makes it suitable for extended recording times, enabling users to capture longer events without needing to frequently change storage media.

In contrast, while AVC (Advanced Video Coding) is related to the codec used in AVCHD, it is not a standalone format. MP4 is a broader file format that can contain various types of video and audio codecs, including AVCHD, but it is not specific to Sony and Panasonic cameras. MOV is a file format developed by Apple, which is also not proprietary to Sony or Panasonic.

Thus, AVCHD stands out as the proprietary format tailored for these brands, ensuring compatibility and optimal performance with their camcorders.