A still that carries a short clip and its own metadata

A Live Photo is not one file. It is a still image paired with roughly a second and a half of video captured just before and after the shutter, stored as a linked pair or, on export, as a small video container wrapped around the frame you actually chose. If you upload "the photo" without thinking about the format, you may be uploading the seconds around it too.

What the bundle actually contains

Apple's Live Photos link a HEIC still to a MOV clip through a shared content identifier; Android's motion photos embed the video inside the JPEG itself as trailing data after the image ends. Either way, the clip carries its own metadata track - timestamp, sometimes location - independent of the still's own fields, and stripping the still's EXIF does not touch the video wrapped alongside it. The clip also shows movement: hand position, surroundings coming briefly into frame, whatever happened in the half-second either side of the tap.

What happens on upload

Most upload widgets, including rating tools, ask for a still image and either reject the Live Photo format outright or - more common on mobile browsers - silently take the still frame and discard the motion component before the file leaves the device. That is a convenience, not a guarantee, and it depends on the browser and the widget rather than on you. The safe assumption is the opposite: treat "Live" or "Motion" as a label meaning there is more in the file than the frame you saw, and convert to a plain still yourself before uploading anywhere, including to Rate Cock. On iPhone, sharing with Options → Live Photo turned off exports a static image only; on Android, most gallery apps offer "Save frame" or a still export separately from the motion file.

Where this differs from a duplicate photo problem

This is not the same issue as the extra frames a burst leaves behind - those are separate files sitting in your library. A Live Photo's video component travels with the single file you select, which is what makes it easy to send along without noticing. Scoring itself is unaffected either way: a model reads one frame, and how a frame becomes a score is a separate question from what else rode along in the upload. Whether a tool that does accept the whole clip should score a frame or the video itself is a different design question, covered in video frames vs still photos for scoring.

Where this comes up elsewhere

A commissioned human review works from whatever you send, and a judge seeing unintended motion frames is a etiquette question rather than a privacy one - what belongs in a submission to a human judge is covered on the site that owns that relationship. Photo standardisation for repeat testing has the same interest in a clean, single frame; Penis Rater's notes on preparing a submission touch the same ground from the comparison side. None of this affects a measurement taken with a tape rather than a photo - Measure My Cock's method does not involve uploading any file at all, still or moving.