Why is my phone making EVERY VIDEO into .mov files when the videos saved are originally MP4

I would appreciate further clarification on the process you employed to generate an MP4 file using the iOS camera application. I'm seeking a more comprehensive understanding of the steps involved in creating an MP4 file through the functionalities provided by the iOS camera app. Could you please elaborate on the specific settings, options, or procedures you followed to initiate and complete this process? Your detailed explanation will greatly assist me in comprehending the intricacies of utilizing the iOS camera app for MP4 file creation.

Refer to this for understanding various Container and Video Formats: Supported media formats in Motion - Apple Support (IN)

Container format and video format refer to two distinct aspects of digital video content. They serve different purposes and are essential for understanding how multimedia content is stored, packaged, and played back. Let's explore the differences between them, especially in the context of Apple devices:

1. Container Format:
   1. Example Formats: Common container formats include MP4 (MPEG-4 Part 14), MKV (Matroska), AVI (Audio Video Interleave), and MOV (QuickTime Movie).
   2. Apple Devices: Apple devices often use the MOV container format, which is based on the QuickTime file format. MOV is commonly associated with Apple's ecosystem and is supported by devices like iPhones, iPads, and Macs.
2. Video Format:
   1. Example Formats: H.264, H.265 (HEVC), VP9, and AV1 are examples of video formats. These formats define how video frames are compressed and decompressed.
   2. Apple Devices: Apple devices commonly support video formats like H.264 and HEVC (H.265). These formats are widely used for video compression and are compatible with Apple's hardware and software ecosystem.

In summary, the container format is like a wrapper that holds together various types of multimedia data, while the video format specifically defines how the video data is encoded and compressed. On Apple devices, the MOV container format and video formats like H.264 and HEVC are commonly used for storing and playing back multimedia content.