Added video studio router and endpoints. Added research router and endpoints. Added youtube router and endpoints. Added onboarding utils router and endpoints. Added onboarding utils service. Added onboarding utils models. Added onboarding utils routes. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. Added onboarding utils utils. 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ajaysi
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docs/LTX2_PRO_IMPLEMENTATION_COMPLETE.md
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docs/LTX2_PRO_IMPLEMENTATION_COMPLETE.md
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# LTX-2 Pro Text-to-Video Implementation - Complete ✅
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## Summary
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Successfully implemented Lightricks LTX-2 Pro text-to-video generation following the same modular architecture pattern as HunyuanVideo-1.5.
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## Implementation Details
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### 1. Service Structure ✅
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**File**: `backend/services/llm_providers/video_generation/wavespeed_provider.py`
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- **`LTX2ProService`**: Complete implementation
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- Model-specific validation (duration: 6, 8, or 10 seconds)
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- Fixed 1080p resolution (no resolution parameter needed)
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- `generate_audio` parameter support (boolean, default: True)
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- Cost calculation (placeholder - update with actual pricing)
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- Full API integration (submit → poll → download)
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- Progress callback support
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- Comprehensive error handling
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### 2. Key Differences from HunyuanVideo-1.5
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| Feature | HunyuanVideo-1.5 | LTX-2 Pro |
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|---------|------------------|-----------|
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| **Duration** | 5, 8, 10 seconds | 6, 8, 10 seconds |
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| **Resolution** | 480p, 720p (selectable) | 1080p (fixed) |
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| **Audio** | Not supported | `generate_audio` parameter (boolean) |
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| **Negative Prompt** | Supported | Not supported |
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| **Seed** | Supported | Not supported |
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| **Size Format** | width*height (selectable) | Fixed 1080p |
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### 3. API Integration ✅
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**Model**: `lightricks/ltx-2-pro/text-to-video`
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**Parameters Supported**:
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- ✅ `prompt` (required)
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- ✅ `duration` (6, 8, or 10 seconds)
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- ✅ `generate_audio` (boolean, default: True)
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- ❌ `negative_prompt` (not supported - ignored with warning)
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- ❌ `seed` (not supported - ignored with warning)
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- ❌ `audio_base64` (not supported - ignored with warning)
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- ❌ `enable_prompt_expansion` (not supported - ignored with warning)
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- ❌ `resolution` (ignored - fixed at 1080p)
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**Workflow**:
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1. ✅ Submit request to WaveSpeed API
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2. ✅ Get prediction ID
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3. ✅ Poll `/api/v3/predictions/{id}/result` with progress callbacks
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4. ✅ Download video from `outputs[0]`
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5. ✅ Return metadata dict
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### 4. Features ✅
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- ✅ **Pre-flight validation**: Subscription limits checked before API calls
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- ✅ **Usage tracking**: Integrated with existing tracking system
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- ✅ **Progress callbacks**: Real-time progress updates (10% → 20-80% → 90% → 100%)
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- ✅ **Error handling**: Comprehensive error messages with prediction_id for resume
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- ✅ **Cost calculation**: Placeholder pricing (update with actual pricing)
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- ✅ **Metadata return**: Full metadata including dimensions (1920x1080), cost, prediction_id
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- ✅ **Audio generation**: Optional synchronized audio via `generate_audio` parameter
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### 5. Validation ✅
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**LTX-2 Pro Specific**:
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- Duration: Must be 6, 8, or 10 seconds
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- Resolution: Fixed at 1080p (parameter ignored)
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- Prompt: Required and cannot be empty
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- Generate Audio: Boolean (default: True)
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### 6. Factory Function ✅
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**Updated**: `get_wavespeed_text_to_video_service()`
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**Model Mappings**:
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- `"ltx-2-pro"` → `LTX2ProService`
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- `"lightricks/ltx-2-pro"` → `LTX2ProService`
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- `"lightricks/ltx-2-pro/text-to-video"` → `LTX2ProService`
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## Usage Example
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```python
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from services.llm_providers.main_video_generation import ai_video_generate
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result = await ai_video_generate(
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prompt="A cinematic scene with synchronized audio",
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operation_type="text-to-video",
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provider="wavespeed",
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model="ltx-2-pro",
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duration=6,
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generate_audio=True, # LTX-2 Pro specific parameter
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user_id="user123",
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progress_callback=lambda progress, msg: print(f"{progress}%: {msg}")
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)
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video_bytes = result["video_bytes"]
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cost = result["cost"]
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resolution = result["resolution"] # Always "1080p"
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```
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## Testing Checklist
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- [ ] Test with valid prompt
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- [ ] Test with 6-second duration
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- [ ] Test with 8-second duration
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- [ ] Test with 10-second duration
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- [ ] Test with `generate_audio=True`
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- [ ] Test with `generate_audio=False`
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- [ ] Test progress callbacks
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- [ ] Test error handling (invalid duration)
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- [ ] Test cost calculation
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- [ ] Test metadata return
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- [ ] Test that unsupported parameters are ignored with warnings
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## Next Steps
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1. ✅ **HunyuanVideo-1.5**: Complete
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2. ✅ **LTX-2 Pro**: Complete
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3. ⏳ **LTX-2 Fast**: Pending documentation
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4. ⏳ **LTX-2 Retake**: Pending documentation
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## Notes
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- **Fixed Resolution**: LTX-2 Pro always generates 1080p videos (1920x1080)
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- **Audio Generation**: Unique feature - can generate synchronized audio with video
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- **Pricing**: Placeholder cost calculation - update with actual pricing from WaveSpeed docs
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- **Unsupported Parameters**: `negative_prompt`, `seed`, `audio_base64`, `enable_prompt_expansion` are ignored with warnings
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- **Polling interval**: 0.5 seconds (same as HunyuanVideo-1.5)
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- **Timeout**: 10 minutes maximum
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## Official Documentation
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- **API Docs**: https://wavespeed.ai/docs/docs-api/lightricks/ltx-2-pro/text-to-video
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- **Model Playground**: https://wavespeed.ai/models/lightricks/ltx-2-pro/text-to-video
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## Ready for Testing ✅
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The implementation is complete and ready for testing. All features are implemented following the modular architecture with separation of concerns, matching the pattern established by HunyuanVideo-1.5.
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