Auto-reencode

Purpose

Mass convert almost any video format to mp4 contained h264 files using two-pass video encoding.

Features

• Tries to retain the original video/audio bitrate and copy inbuilt subtitles.
• To keep devices cool, cpulimit is used to control the max. CPU usage.
• Functions recursively automatically.
• Use tmpfs (or any other preferred processing path) to speedup encoding and preventing SSD degradation.

Dependencies

• bash
• bc
• coreutils
• cpulimit
• ffmpeg including ffprobe

Most Linux-distributions should offer these in the official repository.

Usage

Call the script in the directory containing the target files:

cd /path/to/videos
auto-reencode

Script Parameters

• PATH_TEMP: temporary path used for encoding and logging.
• BIT_VIDEO: sets the maxrate of the video.
• BIT_AUDIO: sets the maxrate of the audio.
• CPU_LIMIT: max. allowed CPU usage.