Selenium Grid 4: how do you enable video recording per session?

Question

Migrating from Zalenium to Selenium 4 Grid. We need MP4 per session for failure triage. Docs mention a video image but concrete docker-compose is thin. Looking for a working example that saves videos to a mounted volume.

Jonas Hansen · Accepted Answer

The official selenium/video image works well - one video container per browser node, sharing the display and a mount for the mp4 output. Key gotchas: match the SE_VIDEO_FILE_NAME per session using SE_OPTS, and give the video container the same shm_size or FFmpeg drops frames.

# docker-compose.yml (excerpt)
chrome:
  image: selenium/node-chrome:4.20
  shm_size: 2gb
  depends_on: [selenium-hub]
  environment:
    - SE_EVENT_BUS_HOST=selenium-hub
    - SE_NODE_MAX_SESSIONS=1

chrome_video:
  image: selenium/video:ffmpeg-6.1-20240517
  volumes:
    - ./videos:/videos
  depends_on: [chrome]
  environment:
    - DISPLAY_CONTAINER_NAME=chrome
    - FILE_NAME=chrome_session.mp4
    - SE_VIDEO_RECORD_STANDALONE=true

Selenium Grid 4: how do you enable video recording per session?

1 answer