xeon-smartupscale_v2

Goal#

Upscale a video to any target resolution with two hard rules:

1. The lanczos pre-scale height is never below 270.
2. Real-ESRGAN super-resolution is always the last step.

Planning rule#

Given source (src_w, src_h) and target (t_w, t_h):

• r = t_h / src_h
• If r < 2: pure lanczos to target.
• Else: pick n >= 1 so pre_h = t_h / 4^n >= 270, choose pre_h closest to src_h. Then do one lanczos to pre_w x pre_h, followed by n consecutive x4 passes.

Usage#

bash

bash <skill_dir>/install.sh
bash <skill_dir>/smartupscale.sh <input.mp4> -t 1080p
bash <skill_dir>/smartupscale.sh <input.mp4> -t 2160p
bash <skill_dir>/smartupscale.sh <input.mp4> -t 1920x1080 -o <out.mp4>

Targets: 480p, 540p, 720p, 1080p, 1440p, 2160p/ 4k, 4320p/ 8k, or explicit WxH.

Output#

• H.264 medium / crf 15, audio copied from source through every pass.
• Final size may differ by a few pixels from the requested target when t_h / 4^n is not an integer; smartupscale.sh reports the actual size.