mujoco recorded video is blank screen

[skr3178]

I created an env with the requirements file [requirements.txt and requirements-mujoco.txt ]using pip.
Both are on python 3.9.19
On running command MUJOCO_GL=egl python ppo_continuous_action.py --track --save-model --upload-model --hf-entity cleanrl --env-id Humanoid-v4 --seed 1

the recorded videos are blank/black screen.

There was another env I experimented with and the videos created from it on training recorded humanoid in mujoco (it works as expected).

[skr3178]

comparison of the videos.

rl-video-episode-27.mp4

rl-video-episode-27.mp4

[skr3178]

works with
pip install mujoco==3.1.4
pip install gymnasium==0.29.1
[cleanrl 1.2.0, stable-baselines3-1.2.0]

I can create a pull request too if needed.