diff --git a/infra/occupymedia/Dockerfile b/infra/occupymedia/Dockerfile
index 378a1e8..b22e43b 100644
--- a/infra/occupymedia/Dockerfile
+++ b/infra/occupymedia/Dockerfile
@@ -6,6 +6,7 @@ ARG NEXT_PUBLIC_API_URL=https://api.occupymedia.cc
 ENV APP_MODE=${APP} NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}
 WORKDIR /app
 RUN corepack enable
+RUN apt-get update && apt-get install -y --no-install-recommends ffmpeg && rm -rf /var/lib/apt/lists/*
 COPY . .
 # Full workspace tree present so every workspace:* dependency resolves.
 # Do NOT "optimize" to a filtered install — scheduler/web builds broke on