VAAPI video converter

A Docker-based video converter that uses VAAPI-compatible hardware for transcoding

Key features

• Transcode a video
• Keep only the main video and a single audio track
• Use hardware-acceleration to unburden the CPU
• Use docker to keep the system clean of dependent packages

Pre-requisites

• A linux system with docker-compose

On debian-based systems, docker-compose may be installed by calling

$ sudo apt install docker-compose

Examples

Convert a video to a small MP4 with stereo audio in german for use on a mobile device:

$ ./start /media/input.mkv /tmp/output.mp4

Use italian language; if not available, use english as fallback:

$ AUDIO_LANGUAGES=ita,eng ./start /media/input.mkv /tmp/output.mkv

Create output video with permissions for user with user id and group id 1000:

$ PUID=1000 PGID=1000 ./start /media/input.mkv /tmp/output.mp4

Environment variables

The following list shows environment variables that may be used to adjust the format of the output video, together with their defaults.

• VIDEO_BITRATE=1280k
• VIDEO_CODEC=h264_vaapi
• VIDEO_WIDTH=720
• AUDIO_BITRATE=128k
• AUDIO_CODEC=aac
• AUDIO_CHANNELS=2
• AUDIO_LANGUAGES=deu,ger,eng
• VAAPI_DEVICE=/dev/dri/renderD128
• PUID=uid of current user
• GUID=group of current user