gganimate and ffmpeg

=> Try to install gganimate in CoLab, it is unavailable. 

=> try in RStudio, 

File access error: 

Warning: file_renderer failed to copy frames to the destination directory  

file_renderer(dir = ".", prefix = "gganim_plot", overwrite = FALSE)

The frame sources:

/var/folders/bw/k6_tkc2142v1wh5r_1yhkqhc0000gp/T//RtmpIopU0P/1eec3399c50d/gganim_plot0001.png

I tried to change file permission in Finder, but my username is not allowed. 

The following codes worked: 

file_renderer(dir = "/Users/hqin/github/R-animation-sandbox/tmp/", prefix = "gganim_plot", overwrite = TRUE)
anim <- p + transition_time(year) +
  labs(title = "Year: {frame_time}")
gganimate::animate( anim, renderer=ffmpeg_renderer())

I tested and found out that I have ffmpeg installed. 

Reference: 

https://community.rstudio.com/t/warning-message-file-renderer-failed-to-copy-frames-to-the-destination-directory/45261/13

https://ottverse.com/create-video-from-images-using-ffmpeg/