Hastebin

import subprocess
from pathlib import Path

input_folders = [
    Path(r"E:\Staging1"),
    Path(r"E:\Staging2"),
    Path(r"J:\Staging3")
]
output_folder = Path(r"Y:\Encodes")
ffmpeg_path = Path(r"C:\Programs\FFMPEG\bin\ffmpeg.exe")

output_folder.mkdir(parents=True, exist_ok=True)

x265_params = "preset=slow:limit-sao:bframes=8:psy-rd=1.5:psy-rdoq=2:aq-mode=3"
crf_value = 19

for current_input_folder in input_folders:
    print(f"\n[Processing Folder] {current_input_folder}\n")

    for input_file in current_input_folder.glob("*.mkv"):
        filename = input_file.stem
        output_file = output_folder / f"{filename}.mkv"

        if output_file.exists():
            print(f"[Skip] {filename} already encoded. Skipping.\n")
            continue

        print(f"[Start] {filename}")

        cmd = [
            str(ffmpeg_path),
            "-hide_banner",
            "-loglevel", "fatal",
            "-stats",
            "-i", str(input_file),
            "-vf", "scale=w=-1:h=720:flags=lanczos+accurate_rnd",
            "-map", "0:v:0",
            "-c:v", "libx265",
            "-crf", str(crf_value),
            "-pix_fmt", "yuv420p10le",
            "-x265-params", x265_params,
            "-profile:v", "main10",
            "-map", "0:a",
            "-c:a", "libopus",
            "-b:a", "160k",
            "-ar", "48000",
            "-map", "0:s?",
            "-c:s", "copy",
            "-y", str(output_file)
        ]

        try:
            subprocess.run(cmd, check=True)
            print(f"[Finish] {filename}")
            print(f"Output: {output_file}\n")
        except subprocess.CalledProcessError as e:
            print(f"[Error] Failed to encode: {input_file}")
            print(f"Reason: {e}\n")

print("All encodes complete!")