#!/usr/bin/env python3
"""
SeedVR2 Video Upscaler - Standalone CLI Interface

Command-line interface for high-quality upscaling using SeedVR2 diffusion models.
Supports single and multi-GPU processing with advanced memory optimization.

Key Features:
    • Multi-GPU Processing: Automatic workload distribution across multiple GPUs with
      temporal overlap blending for seamless transitions
    • Memory Optimization: BlockSwap for limited VRAM, VAE tiling for large resolutions,
      intelligent tensor offloading between processing phases
    • Performance: Torch.compile integration, BFloat16 compute pipeline,
      efficient model caching for batch processing
    • Flexibility: Multiple output formats (MP4/PNG), advanced color correction methods,
      directory batch processing with auto-format detection
    • Quality Control: Temporal overlap blending, frame prepending for artifact reduction,
      configurable noise scales for detail preservation

Architecture:
    The CLI implements a 4-phase processing pipeline:
    1. Encode: VAE encoding with optional input noise and tiling
    2. Upscale: DiT transformer upscaling with latent space diffusion
    3. Decode: VAE decoding with optional tiling
    4. Postprocess: Color correction and temporal blending

Usage:
    python inference_cli.py video.mp4 --resolution 1080
    For complete usage examples, run: python inference_cli.py --help

Requirements:
    • Python 3.10+
    • PyTorch 2.4+ with CUDA 12.1+ (NVIDIA) or MPS (Apple Silicon)
    • 16GB+ VRAM recommended (8GB minimum with BlockSwap)
    • OpenCV, NumPy for video I/O

Model Support:
    • 3B models: seedvr2_ema_3b_fp16.safetensors (default), _fp8_e4m3fn/GGUF variants
    • 7B models: seedvr2_ema_7b_fp16.safetensors, _fp8_e4m3fn/GGUF variants
    • VAE: ema_vae_fp16.safetensors (shared across all models)
    • Auto-downloads from HuggingFace on first run with SHA256 validation
"""

# Standard library imports
import sys
import os

# =============================================================================
# DEPRECATION NOTICE - This branch is no longer supported
# =============================================================================
print("\n" + "=" * 70)
print("❌ ERROR: This nightly branch is DEPRECATED and no longer supported.")
print("=" * 70)
print("\nPlease update to the main branch:")
print("  • Remove the old SeedVR2 folder and reinstall via ComfyUI Manager (recommended)")
print("  • Or visit: https://github.com/numz/ComfyUI-SeedVR2_VideoUpscaler")
print("\n" + "=" * 70 + "\n")
sys.exit(1)