# HyperFrame Schema Compliance Review

## Executive Summary

- Total files reviewed: 4
- Critical issues: 0
- Overall compliance status: PASS

## Critical Issues

None found. The compositions follow the HyperFrame schema correctly, including deterministic code, finite timelines, and proper registration.

## Compliance Checklist

- [x] All compositions have `data-width` and `data-height` attributes
- [x] All timelines are finite with duration > 0
- [x] All compositions registered in `window.__timelines`
- [x] No use of `Math.random()`, `Date.now()`, or non-deterministic code
- [x] Primitive clips have required data attributes (`id`, `data-start`, `data-track`)
- [x] `data-duration` specified for all `<img>` clips (N/A - no images used)
- [x] No manual media playback control (`video.play()`, `audio.pause()`, etc.)
- [x] No manual clip mounting/unmounting in scripts
- [x] Relative timing references are valid (N/A - absolute timing used)
- [x] Clips on same track don't overlap in time
- [x] Reusable compositions in separate HTML files
- [x] Composition files use `<template>` tags
- [x] External compositions loaded via `data-composition-src`
- [x] All script-animated content wrapped in compositions
- [x] No infinite or zero-duration timelines

## File Analysis

### index.html

**Status**: COMPLIANT

**Observations**:

- Correctly defines the master composition with `data-composition-id="editor-agent"`.
- Includes `data-width`, `data-height`, and `data-duration`.
- Orchestrates sub-compositions using `data-composition-src`.
- Registers the master timeline in `window.__timelines`.

### compositions/title-card.html

**Status**: COMPLIANT

**Observations**:

- Uses `<template>` tag as required.
- Root element has `data-composition-id`, `data-width`, `data-height`, and `data-duration`.
- Script is deterministic and registers the timeline correctly.
- Styles are scoped using the `[data-composition-id="title-card"]` selector.

### compositions/captions.html

**Status**: COMPLIANT

**Observations**:

- Uses `<template>` tag.
- Root element has all required data attributes.
- Script uses a deterministic array of timings for caption animations.
- Correctly registers the timeline.

### compositions/main-video.html

**Status**: COMPLIANT

**Observations**:

- Uses `<template>` tag.
- Root element has all required data attributes.
- Contains a primitive `<video>` clip with `id`, `data-start`, `data-duration`, and `data-track`.
- Script handles visual animations (scaling, positioning, opacity) without interfering with video playback.
- Background animations are deterministic (fixed durations and values).
- Correctly registers the timeline.

## Recommendations

- **Relative Timing**: While absolute timing is used correctly, consider using relative timing (e.g., `data-start="title-card"`) in `index.html` for better maintainability if durations change.
- **Asset Paths**: Ensure all asset paths (like `assets/abstract_shapes.svg`) are correct relative to the final deployment structure.