#!/bin/zsh

seconds_per_day=0.04

file_resolution="640x320"

git log --no-walk --tags --reverse --simplify-by-decoration --pretty="format:%ct|%D" > captions.txt

gource_opt=(

--highlight-dirs

--multi-sampling

--camera-mode overview

-c 4

--seconds-per-day $seconds_per_day

--max-file-lag 1

--auto-skip-seconds 1

--date-format "%b %d %Y"

--caption-file ./captions.txt

--caption-duration 10

--caption-offset 1

)

ffmpeg_opt=(

-y

-r 60

-f image2pipe

-vcodec ppm

-i -

-vcodec libx264

-pix_fmt yuv420p

-threads 0

-bf 0

-preset veryslow

-crf 28

)

if [[ -z $1 ]]; then

gource ./ $gource_opt

else

gource_opt+=(--viewport $file_resolution

--hide mouse,progress)

gource ./ $gource_opt -o - | ffmpeg $ffmpeg_opt $1

fi

rm captions.txt