H264 video transcoder

transcoder.py

import os
import subprocess
import time

# This script is intended to transcode *.mkv files.
# It uses docker image from https://github.com/lisamelton/other_video_transcoding .
# It transcodes the videos inside the rootdir to max quality H264 mkv files.
# The docker container utilizes intel quick sync hardware encoder.
# This can be run inside a tmux session overnight.

# there must be directory called "ripped" under the rootdir to store the transcoded files
rootdir = "/storage/data/filebrowser/media/series/[A] Animeler"

# Loop through all files in the directory
for filename in os.listdir(rootdir):

    # Check if the file ends with .mkv
    if not filename.endswith(".mkv"):
        continue

    # atore the execution start time
    before_run = int(time.time())

    # the cpu number can be limited with --cpuset-cpus parameter
    command = ["sudo", "docker", "run", # "--cpuset-cpus", "0",
               "--rm", "--device", "/dev/dri:/dev/dri",
               "-v", os.fsencode(f"{rootdir}:/src"),
               "-v", os.fsencode(f"{rootdir}/ripped:/out"),
               "-w", "/out", "git.skj.dev/container/other-transcode:qsv",
               "--add-audio", "all", "--add-subtitle", "all", "--10-bit",
               os.fsencode(f"/src/{filename}")]

    proc = subprocess.Popen(
                command, universal_newlines=True,
                stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)

    while proc.poll() is None:
        print(proc.stderr.readline().strip())

    # check the execution time
    # if the execution time is more than 5 sec then sleep 10 min
    # the gpu needs some time to cool down in fanless setup
    if (int(time.time()) - before_run) > 5:
        time.sleep(600)