This is the repository that stores my attempts at quantitative video data analysis using FFmpeg and R.
I am using MacOS, and the troubleshooting and instructions below might not work for the other OSs.
FFmpeg is a free and open-source software for handling videos. It is a cross-platform command line tool. Some of its helpful functions are included in this website. This Youtube video also did an awesome job explaining its main features.
Solution 1:
Use homebrew to install FFmpeg in the terminal
brew install ffmpeg
Then, copy the installed folder to the directory /usr/local/bin.
Solution 2:
Download the software from the official website.
Follow the instructions in the INSTALL.md document.
Then, copy the installed folder to the directory /usr/local/bin.
To work with video data in R, install imager:
install.packages("imager")
if having problems with loading imager, try installing xQuartz first.
imager manipulates video data by using FFmpeg. Reset the path of R to include a path to FFmpeg. For me, typing this in the R console works:
Sys.setenv(PATH = paste("/usr/local/bin/ffmpeg", Sys.getenv("PATH"), sep=":"))