BXR 4K Portrait Scaler v1.0

Developed by: BossXRichard (BXR)

Stop fighting with "too large" upload errors or messy artifacts on your high-res renders. The BXR 4K Portrait Scaler is a standalone, post-generation tool designed to bridge the gap between your raw AI video outputs and CivitAI's optimized upload standards.

🛠️ The Problem it Solves

When you upscale to x4 or push resolutions beyond standard boundaries, your file sizes and bitrates often skyrocket, leading to playback issues or upload failures. This tool takes those oversized renders and scales them down to the absolute "sweet spot" of quality and compatibility.

✨ Key Features

• Post-Generation Standalone: A dedicated folder-based process that works independently of your AI generation software.

• 4K Portrait Lock: Automatically forces your video to the 3840px vertical ceiling while preserving your original aspect ratio.

• Universal Portrait Support: All portrait-style videos are compatible so long as they do not exceed the 4K resolution limit (2160px) in width.

• Fidelity Optimization: Uses a specific profile to hit a clean ~21Mbps bitrate, eliminating the artifacts and bloat found in standard converters.

• Clean Batch Processing: Includes a "Naming Sanitizer" to prevent redundant suffixes and keep your library organized.

📝 How to Use

1. Place your source .mp4 videos into the INSERT VIDEOS HERE folder.

2. Run Initialize_Environment.bat to verify your paths and setup.

3. Run 4k Portrait.bat to begin the automated scaling process.

4. Upload your finalized, high-fidelity videos from the Processed_4K_Max folder directly to CivitAI.

⚙️ Technical Specs

• Encoder: libx264 (Slow Preset)

• Target: 3840H (Standard 4K Portrait Length)

• Bitrate Profile: Balanced ~21Mbps for maximum clarity

Where Vision Meets the Masses. If you find this tool helpful, likes and follows drive the development of the next high-fidelity refinement!