# 1.install gource using HomeBrew
$ brew install gource

# 2.install avconv
git clone git://git.libav.org/libav.git
cd libav
# it will take 3-5 minutes to complie, be patient.
./configure --disable-yasm
make && make install

# 3.generate a video for you repo.
$ cd your_repo_dir
$ gource \
    -s .06 \
    -1280x720 \
    --auto-skip-seconds .1 \
    --multi-sampling \
    --stop-at-end \
    --key \
    --highlight-users \
    --hide mouse,progress,filenames \
    --file-idle-time 0 \
    --max-files 0  \
    --background-colour 000000 \
    --font-size 22 \
    --title "The COBRA Toolbox 2012 - 2017" \
    --output-ppm-stream - \
    --output-framerate 30 \
    --dir-name-depth 9999 \
    | avconv -y -r 30 -f image2pipe -vcodec ppm -i - -b 65536K movie.mp4

# It's Done!  Just share the video with your teammates, Have fun!