Implement OTF ecoding for videos

Dockerfile

@@ -4,6 +4,11 @@ FROM python:3.13-slim
 # Set the working directory in the container
 WORKDIR /code
 
+# Install FFMPEG
+RUN apt-get update && \
+    apt-get install -y ffmpeg --no-install-recommends && \
+    rm -rf /var/lib/apt/lists/*
+
 # Copy the requirements file into the container
 COPY ./requirements.txt /code/requirements.txt