docs: improve root README with architecture, structure, and usage snippets#65
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📝 WalkthroughWalkthroughREADME.md was substantially rewritten and reorganized: project overview and core architecture were added, module structure and step-by-step JitPack quick-start were introduced, per-module Gradle dependency lists and Kotlin usage examples (timeline, export, MotionConfig) were added, plus a custom MotionView example and "Where to look next" links. ChangesDocumentation Content and Structure
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No blocking issues found. This documentation-only PR significantly improves the README with clear architecture overview, project structure, installation guide, and practical code examples.
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Code Review
This pull request significantly expands the README.md file to provide a comprehensive overview of the AndroidVideoMotion project, including its core architecture, project structure, quick start guides, and code snippets. The review feedback identifies two key improvements for the documentation: adding the missing core module to the project structure diagram for clarity, and wrapping the produceVideo code snippet in a coroutine scope since it is a suspend function.
| AndroidVideoMotion/ | ||
| ├── modules/ | ||
| │ ├── motionlib/ # Core motion engine and UI components | ||
| │ │ ├── core/motion/ # Motion timeline, composer, producer, transitions | ||
| │ │ ├── core/adapter/ # Video producer adapters | ||
| │ │ ├── core/animation/ # Easings, springs, interpolators | ||
| │ │ └── ui/custom/ # Motion-aware custom views (text, image, audio, video) |
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The project structure diagram is missing the core module (located at modules/core), which is a separate module containing core interfaces (like VideoProducerAdapter) and configurations (like MotionConfig). Since the JitPack dependency also references :core, it is important to include it in the structure diagram for clarity.
| AndroidVideoMotion/ | |
| ├── modules/ | |
| │ ├── motionlib/ # Core motion engine and UI components | |
| │ │ ├── core/motion/ # Motion timeline, composer, producer, transitions | |
| │ │ ├── core/adapter/ # Video producer adapters | |
| │ │ ├── core/animation/ # Easings, springs, interpolators | |
| │ │ └── ui/custom/ # Motion-aware custom views (text, image, audio, video) | |
| AndroidVideoMotion/ | |
| ├── modules/ | |
| │ ├── core/ # Core interfaces, configurations, and base classes | |
| │ ├── motionlib/ # Core motion engine and UI components | |
| │ │ ├── core/motion/ # Motion timeline, composer, producer, transitions | |
| │ │ ├── core/adapter/ # Video producer adapters | |
| │ │ ├── core/animation/ # Easings, springs, interpolators | |
| │ │ └── ui/custom/ # Motion-aware custom views (text, image, audio, video) |
| val file = motionProducer.produceVideo( | ||
| context = applicationContext, | ||
| outputFile = File(cacheDir, "output.mp4"), | ||
| ) { progress, frameBitmap -> | ||
| // Update progress UI / preview | ||
| } |
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Since produceVideo is a suspend function, calling it directly as shown will result in a compilation error unless it is invoked within a coroutine scope or another suspend function. It is highly recommended to wrap this snippet in a coroutine builder (like lifecycleScope.launch or CoroutineScope) or add a comment indicating that it must be executed within a coroutine context.
| val file = motionProducer.produceVideo( | |
| context = applicationContext, | |
| outputFile = File(cacheDir, "output.mp4"), | |
| ) { progress, frameBitmap -> | |
| // Update progress UI / preview | |
| } | |
| // Must be called from a coroutine scope or suspend function | |
| lifecycleScope.launch { | |
| val file = motionProducer.produceVideo( | |
| context = applicationContext, | |
| outputFile = File(cacheDir, "output.mp4"), | |
| ) { progress, frameBitmap -> | |
| // Update progress UI / preview | |
| } | |
| } |
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| Status | Name | Latest Commit | Preview URL | Updated (UTC) |
|---|---|---|---|---|
| ✅ Deployment successful! View logs |
motion-lib | 96aa15e | Commit Preview URL Branch Preview URL |
Jun 03 2026, 12:56 PM |
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| Status | Name | Latest Commit | Preview URL | Updated (UTC) |
|---|---|---|---|---|
| ✅ Deployment successful! View logs |
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Jun 03 2026, 12:57 PM |
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Jun 03 2026, 12:57 PM |
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Actionable comments posted: 1
🧹 Nitpick comments (1)
README.md (1)
122-128: ⚡ Quick winConsider adding initialization context for snippet variables.
The snippet references
motionAudio,firstMotionView, andsecondMotionViewwithout showing their construction. For a quick-start guide, readers may benefit from seeing how to create these objects or a comment indicating they're placeholders.💡 Example with placeholder comments
```kotlin +// Assume you have constructed your motion audio and views: +// val motionAudio = listOf(MotionAudio(...)) +// val firstMotionView = MotionTextView(...) +// val secondMotionView = MotionImageView(...) + val motionProducer = MotionVideoProducer .with(context = applicationContext, motionAudio = motionAudio) .addMotionViewToSequence(firstMotionView) .addTransition(CrossFadeTransition(), duration = 30) .addMotionViewToSequence(secondMotionView)</details> <details> <summary>🤖 Prompt for AI Agents</summary>Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.In
@README.mdaround lines 122 - 128, The snippet using MotionVideoProducer.with
references undeclared variables motionAudio, firstMotionView, and
secondMotionView—add brief initialization guidance: either insert placeholder
comments showing expected types (e.g., val motionAudio =
listOf(MotionAudio(...)), val firstMotionView = MotionTextView(...), val
secondMotionView = MotionImageView(...)) or include minimal example
constructions above the MotionVideoProducer.with chain; reference the
MotionVideoProducer.with call and the related types MotionAudio, MotionTextView,
MotionImageView (and CrossFadeTransition for context) so readers know what to
supply.</details> </blockquote></details> </blockquote></details> <details> <summary>🤖 Prompt for all review comments with AI agents</summary>Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.Inline comments:
In@README.md:
- Line 5: Add descriptive alt text to the badge image tokens in the README (the
two Markdown image occurrences: the jitpack badge
"https://jitpack.io/v/tejpratap46/AndroidVideoMotion.svg" and the DeepWiki badge
"https://deepwiki.com/badge.svg") so screen readers can convey their purpose;
replace the empty alt portions with short, meaningful strings (e.g., "JitPack -
AndroidVideoMotion" and "Ask DeepWiki badge") while keeping the existing link
targets intact to satisfy MD045.
Nitpick comments:
In@README.md:
- Around line 122-128: The snippet using MotionVideoProducer.with references
undeclared variables motionAudio, firstMotionView, and secondMotionView—add
brief initialization guidance: either insert placeholder comments showing
expected types (e.g., val motionAudio = listOf(MotionAudio(...)), val
firstMotionView = MotionTextView(...), val secondMotionView =
MotionImageView(...)) or include minimal example constructions above the
MotionVideoProducer.with chain; reference the MotionVideoProducer.with call and
the related types MotionAudio, MotionTextView, MotionImageView (and
CrossFadeTransition for context) so readers know what to supply.</details> <details> <summary>🪄 Autofix (Beta)</summary> Fix all unresolved CodeRabbit comments on this PR: - [ ] <!-- {"checkboxId": "4b0d0e0a-96d7-4f10-b296-3a18ea78f0b9"} --> Push a commit to this branch (recommended) - [ ] <!-- {"checkboxId": "ff5b1114-7d8c-49e6-8ac1-43f82af23a33"} --> Create a new PR with the fixes </details> --- <details> <summary>ℹ️ Review info</summary> <details> <summary>⚙️ Run configuration</summary> **Configuration used**: defaults **Review profile**: CHILL **Plan**: Pro **Run ID**: `7a90fb21-12ee-44aa-a056-0d62cfc73c99` </details> <details> <summary>📥 Commits</summary> Reviewing files that changed from the base of the PR and between 87418ef2c53f29e7d21e6f816ff6440995f5af7c and 90879d46505cfa266a69c42ce23f1b614b2b30c9. </details> <details> <summary>📒 Files selected for processing (1)</summary> * `README.md` </details> </details> <!-- This is an auto-generated comment by CodeRabbit for review status -->
| Motion Videos natively in Android | ||
| AndroidVideoMotion is a modular toolkit for generating **frame-accurate motion videos on Android** using native Views, transitions, effects, audio tracks, and optional rendering extensions (OpenGL, Filament, SDUI, ML, and more). | ||
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| [](https://jitpack.io/#tejpratap46/AndroidVideoMotion) [](https://deepwiki.com/tejpratap46/AndroidVideoMotion) |
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Add alt text to badge images for accessibility.
The badge images lack descriptive alt text, which affects screen reader users and document accessibility.
♿ Proposed fix
-[](https://jitpack.io/#tejpratap46/AndroidVideoMotion) [](https://deepwiki.com/tejpratap46/AndroidVideoMotion)
+[](https://jitpack.io/#tejpratap46/AndroidVideoMotion) [](https://deepwiki.com/tejpratap46/AndroidVideoMotion)As per coding guidelines, this aligns with the markdownlint hint MD045 (no-alt-text).
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| [](https://jitpack.io/#tejpratap46/AndroidVideoMotion) [](https://deepwiki.com/tejpratap46/AndroidVideoMotion) | |
| [](https://jitpack.io/#tejpratap46/AndroidVideoMotion) [](https://deepwiki.com/tejpratap46/AndroidVideoMotion) |
🧰 Tools
🪛 markdownlint-cli2 (0.22.1)
[warning] 5-5: Images should have alternate text (alt text)
(MD045, no-alt-text)
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@README.md` at line 5, Add descriptive alt text to the badge image tokens in
the README (the two Markdown image occurrences: the jitpack badge
"https://jitpack.io/v/tejpratap46/AndroidVideoMotion.svg" and the DeepWiki badge
"https://deepwiki.com/badge.svg") so screen readers can convey their purpose;
replace the empty alt portions with short, meaningful strings (e.g., "JitPack -
AndroidVideoMotion" and "Ask DeepWiki badge") while keeping the existing link
targets intact to satisfy MD045.
1 participant
Motivation
Description
README.mdinto a detailed project overview with positioning, capability bullets, and badges.Core architecturesection that diagrams the pipeline and describes responsibilities ofMotionVideoProducer,MotionComposerView, andVideoProducerAdapter.Project structuremap describing important modules (motionlib, sdui, renderers, ML extensions, demos).Testing
README.mdand does not alter runtime code or behaviour.Codex Task
Summary by CodeRabbit