#StackBounty: #python #selenium #ffmpeg #xvfb #pyvirtualdisplay How to video-record selenium tests running headless inside a docker?

Bounty: 100

I am running python-selenium tests inside a docker using a headless firefox.

During these tests I am able to make screenshots with the selenium method for screenshots – but can I use something to ‘video’ record the virtual display during the whole test (several test scripts with several test methods, with many webdrivers started and stopped).

So how can I video-record a complete test session?

Addendum: I have found a webpage that describes exactly what I need: here. Unfortunately I get an error when I try to do the recording. Here are the commands I am doing:

xvfb-run --listen-tcp --server-num 44 --auth-file /tmp/xvfb.auth -s "-ac -screen 0 1920x1080x24" python seltest.py &
ffmpeg -f x11grab -video_size 1920x1080 -i -codec:v libx264 -r 12 /tmp/behat_1.mp4

and the error is (for the second command):

[x11grab @ 0x1d289c0] Cannot open display, error 1. Input/output error

Get this bounty!!!

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