# 3GPP Technical Document Summary: Live Images Feature

## Document Information
- **Meeting:** SA4 #135, India, 9-13 Feb 2026
- **Document Number:** S4-260265
- **Work Item:** FS_AIF_MED
- **Release:** Rel-20
- **Category:** B (addition of feature)
- **Source:** Apple Inc.

## Main Technical Contribution

This change request proposes the addition of a new scenario to the FS_AIF_MED study item covering **Live Images** functionality.

### Scenario #xy: Live Images

#### Overview (Clause 5.x.1)
The document introduces Live Images as a feature that combines:
- A standard photograph
- A short video component capturing movement

**Key Characteristics:**
- Records moments in the immediate vicinity of the shutter press
- Implemented across various consumer product ecosystems
- References existing implementations from major platforms (Apple's Live Photos and Android's Motion Photos)

#### Previous Work (Clause 5.x.2)
The contribution notes that:
- Similar features in commercial products are already supported by the **Image Sequence feature** specified in **ISO/IEC 23008-12 [3]**
- This provides a foundation for standardization work

#### Evaluation Framework (Clauses 5.x.3 and 5.x.4)
The document establishes placeholders for:
- **Evaluation criteria and metrics** (5.x.3) - marked as Editor's Note
- **Evaluation methodology** (5.x.4) - marked as Editor's Note
  - Objective performance evaluation (5.x.4.1)
  - Subjective performance evaluation (5.x.4.2)

### References Added
The CR adds three normative/informative references:
1. Apple Inc. developer documentation on Live Photos
2. Android Developers documentation on Motion Photo format
3. ISO/IEC 23008-12 (Image File Format specification)

## Status
This appears to be an initial text proposal establishing the framework for Live Images evaluation within the FS_AIF_MED study. The evaluation sections are incomplete and marked for future development.