diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 87870397..a5997812 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -12,6 +12,7 @@ build:
     python: "3.9"
   apt_packages:
     - cmake
+    - ffmpeg
     - libboost-filesystem-dev
     - libboost-log-dev
     - libboost-thread-dev