diff --git a/source/isaaclab/changelog.d/fix-pre-kit-env-import.fixed.rst b/source/isaaclab/changelog.d/fix-pre-kit-env-import.fixed.rst
new file mode 100644
index 000000000000..064a7936f00b
--- /dev/null
+++ b/source/isaaclab/changelog.d/fix-pre-kit-env-import.fixed.rst
@@ -0,0 +1 @@
+* Avoided loading MoviePy's unrelated editing dependencies when importing the video recorder.
diff --git a/source/isaaclab/isaaclab/envs/utils/video_recorder.py b/source/isaaclab/isaaclab/envs/utils/video_recorder.py
index 5e0520ac0017..7df49c1815b0 100644
--- a/source/isaaclab/isaaclab/envs/utils/video_recorder.py
+++ b/source/isaaclab/isaaclab/envs/utils/video_recorder.py
@@ -20,7 +20,7 @@
 import numpy as np
 
 try:
-    from moviepy.editor import ImageSequenceClip
+    from moviepy.video.io.ImageSequenceClip import ImageSequenceClip
 except ImportError:
     ImageSequenceClip = None  # type: ignore[assignment,misc]
 
diff --git a/source/isaaclab_rl/changelog.d/fix-pre-kit-env-import.fixed.rst b/source/isaaclab_rl/changelog.d/fix-pre-kit-env-import.fixed.rst
new file mode 100644
index 000000000000..4357d036e47b
--- /dev/null
+++ b/source/isaaclab_rl/changelog.d/fix-pre-kit-env-import.fixed.rst
@@ -0,0 +1,3 @@
+* Fixed Isaac Sim crashing at startup in OpenBLAS's at-fork handler when ``moviepy`` is installed: the
+  reinforcement learning entry points imported the environment runtime, and with it the video recorder's
+  ``moviepy`` and SciPy, before the launch.
diff --git a/source/isaaclab_rl/isaaclab_rl/entrypoints/common.py b/source/isaaclab_rl/isaaclab_rl/entrypoints/common.py
index a2576b9a5feb..dfc2243225ec 100644
--- a/source/isaaclab_rl/isaaclab_rl/entrypoints/common.py
+++ b/source/isaaclab_rl/isaaclab_rl/entrypoints/common.py
@@ -29,7 +29,7 @@
 from PIL import Image
 
 from isaaclab.app import LoadingScreen
-from isaaclab.envs import DirectMARLEnvCfg, DirectRLEnvCfg, ManagerBasedRLEnvCfg, multi_agent_to_single_agent
+from isaaclab.envs import DirectMARLEnvCfg, DirectRLEnvCfg, ManagerBasedRLEnvCfg
 from isaaclab.envs.utils.video_recorder_cfg import VideoRecorderCfg
 from isaaclab.renderers.renderer_cfg import RendererCfg
 from isaaclab.utils.assets import retrieve_file_path
@@ -501,6 +501,9 @@ def create_isaaclab_env(
 
         env = WarpFrontend.build_env(env_cfg, task)
     if convert_marl_to_single_agent and isinstance(env.unwrapped.cfg, DirectMARLEnvCfg):
+        # Import the environment runtime only after simulation launch.
+        from isaaclab.envs import multi_agent_to_single_agent
+
         env = multi_agent_to_single_agent(env)
     return env
 
diff --git a/source/isaaclab_rl/test/test_entrypoints.py b/source/isaaclab_rl/test/test_entrypoints.py
index 3371f4ec6760..7c24021bdb32 100644
--- a/source/isaaclab_rl/test/test_entrypoints.py
+++ b/source/isaaclab_rl/test/test_entrypoints.py
@@ -31,6 +31,7 @@
     [
         ("import isaaclab_rl", ["isaaclab_rl.entrypoints", "torch"]),
         ("import isaaclab_rl.entrypoints.backends", ["torch"]),
+        ("import isaaclab_rl.entrypoints.common", ["isaaclab.envs.direct_marl_env", "moviepy"]),
         # the LEAPP runtime must only load once the simulation has launched
         ("import isaaclab_rl.entrypoints.backends.export_rsl_rl", ["leapp", "isaaclab.utils.leapp"]),
         ("import isaaclab_rl.rl_games", ["isaaclab_rl.rl_games.rl_games", "rl_games", "torch"]),