diff --git a/.travis.yml b/.travis.yml
index 2c708b3..6bb6a4c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ python:
 before_install:
   - sudo apt-get -qq update
   - sudo apt-get install -y ffmpeg
+  - sudo apt-get install -y libav-tools
 install:
   - pip install -r requirements.txt
 # command to run tests