What's the underlying code for ios's camera app ? like how does it assign metadata and filename? is it java or something else ? Can another app be created to use the same basic code with added extra features ?

Hello everyone, I am new here and Im just trying to understand ios photos app. I understand that ios uses a DCIF specification for media files. How do I make the photos app more meaningful for photos and videos? For example, i know that for both photos and videos the filenaming is IMG_XXXX which is a bit odd..considering videos are different from photos instead of IMG_xxxx how do i change it to...IMG_YYYYMMDD_HHMMSS to make sense more OR VID_YYYYMMDD_HHMMSS?

Hello, according to pkware, the latest zip standard is 6.3.10, what standard does ios 26 use to make zip files in the files app ?

The latest zip specification, according to pkware is 6.3.10. In the latest ios 26, what is the latest zip specification ?