Hastebin

import subprocess
from pathlib import Path

# Configuration
input_folder = Path(r"E:\Staging")
output_folder = Path(r"Y:\Encodes")
ffmpeg_path = Path(r"C:\Programs\FFMPEG\bin\ffmpeg.exe")

# Ensure output directory exists
output_folder.mkdir(parents=True, exist_ok=True)

# Loop through .mkv files in input directory
for input_file in 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", "quiet",
        "-stats",
	"-hwaccel", "cuda",
	#"-hwaccel_output_format", "cuda",
        "-i", str(input_file),

        # Include only specific streams explicitly
        "-map", "0:v:0",  # First video stream
        "-map", "0:a",    # All audio streams
        "-map", "0:s?",   # All subtitle streams (optional - won't fail if none)

        # Video encoding
        "-vf", "scale=w=-1:h=720:flags=lanczos+accurate_rnd",
        "-c:v", "hevc_nvenc",
        "-preset", "p7",
        "-rc", "vbr",
        "-tune", "hq",
        "-multipass", "fullres",
        "-cq", "19",
        "-maxrate", "3500k",
        "-bufsize", "7000k",
        "-bf", "4",
        "-b_ref_mode", "middle",
        "-nonref_p", "1",
        "-strict_gop", "1",
        "-g", "250",
        "-keyint_min", "25",
        "-pix_fmt", "p010le",
        "-profile:v", "main10",
        "-spatial-aq", "1",
        "-temporal-aq", "1",
        "-aq-strength", "8",
        "-refs", "5",
        "-rc-lookahead", "32",
        "-colorspace", "bt709",
        "-color_primaries", "bt709",
        "-color_trc", "bt709",

        # Audio encoding for all streams
        "-c:a", "libopus",
        "-b:a", "96k",

        # Subtitle stream copy
        "-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!")