make.video: Make/save a video using ffmpeg

In imager: Image Processing Library Based on 'CImg'

Make/save a video using ffmpeg

Description

You need to have ffmpeg on your path for this to work. This function uses ffmpeg to combine individual frames into a video. save.video can be called directly with an image or image list as input. make.video takes as argument a directory that contains a sequence of images representing individual frames to be combined into a video.

Usage

make.video(
  dname,
  fname,
  pattern = "image-%d.png",
  fps = 25,
  extra.args = "",
  verbose = FALSE
)

save.video(im, fname, ...)

Arguments

dname	name of a directory containing individual files
fname	name of the output file. The format is determined automatically from the name (example "a.mpeg" will have MPEG format)
pattern	pattern of filename for frames (the default matches "image-1.png", "image-2.png", etc.. See ffmpeg documentation for more).
fps	frames per second (default 25)
extra.args	extra arguments to be passed to ffmpeg (default "", none)
verbose	if TRUE, show ffmpeg output (default FALSE)
im	an image or image list
...	extra arguments to save.video, passed on to make.video

Functions

• save.video(): Save a video using ffmpeg

Author(s)

Simon Barthelme

See Also

load.video

Examples

## Not run
## iml <- map_il(seq(0,20,l=60),~ isoblur(boats,.))
## f <- tempfile(fileext=".avi")
## save.video(iml,f)
## load.video(f) %>% play
## #Making a video from a directory
## dd <- tempdir()
## for (i in 1:length(iml)) {
## png(sprintf("%s/image-%i.png",dd,i));
## plot(iml[[i]]); dev.off() }
## make.video(dd,f)
## load.video(f) %>% play

imager documentation built on May 29, 2024, 1:38 a.m.