gource format a git log for only a given subtree of a git repo.

gistfile1.txt

## gawk or mawk are required for awk. The BSD awk with macOS is NOT sufficient.

# brew install gawk gource ffmpeg

git log --reverse --name-status --format="%at|%an|" . | awk '/^1/ {h=$0} /^[AMD]/{print h$1"|"$2}' |\
    gource --log-format custom -


# or with some nice options

 git log --reverse --name-status --format="%at|%an|" . | awk '/^1/ {h=$0} /^[AMD]/{print h$1"|"$2}' |\
     gource -s .1 -1280x720 --auto-skip-seconds .1 --multi-sampling  --stop-at-end -key --highlight-users \
         --hide mouse,progress --file-idle-time 0 --max-files 0 --background-colour 000000 \
         --font-size 22 --title "The history of streetwatchd" --log-format custom -
 
 
 # or mp4 output
 
 git log --reverse --name-status --format="%at|%an|" . | awk '/^1/ {h=$0} /^[AMD]/{print h$1"|"$2}' |\
     gource -s .1 -1280x720 --auto-skip-seconds .1 --multi-sampling --stop-at-end -key --highlight-users \
         --hide mouse,progress --file-idle-time 0   --max-files 0 --background-colour 000000 \
         --font-size 22 --title "The history of streetwatchd"  --output-ppm-stream - \
         --output-framerate 60 --log-format custom - |\
     ffmpeg -y -r 60 -f image2pipe -vcodec ppm -i - \
         -c:v libx264 -preset slow -crf 22 -pix_fmt yuv420p -profile:v high422  output.mp4