mp4_to_png: Convert Between Video/Images

In trinker/embodied: Tools for working with embodied actions (movements within space).

Description

mp4_to_png - Converts a .mp4 video to a directory of sill .png images.

png_to_mp4 - Converts a directory of .png images to .mp4 video.

Usage

mp4_to_png(path, out = file.path(dirname(path), "raw"), fps = 4,
  size = "500x500", other.opts = "", crop = "", ffmpeg = NULL)

png_to_mp4(path, out = file.path(dirname(path), "raw"), fps = 4,
  ffmpeg = NULL)

Arguments

path	Path to the in .mp4 video file (mp4_to_png) or .png directory (png_to_mp4).
out	Path to place the out .png files or .mp4 video.
fps	The number of image frames per second to output. Generally the fps used to desconstruct a video into images will be used to reconstruct the images back to video.
size	Character string of the output size of the png files in the form of "width x height" (in px and no spaces).
other.opts	other options to be passed to ffmpeg.
crop	Character string of ffmpeg code used to crop the images (e.g. "-vf crop=in_w-2*120"). See: http://www.ffmpeg.org/ffmpeg-filters.html#crop for more.
ffmpeg	Raw mmpeg code that may be provided in lieu of the other arguments.

Value

mp4_to_png - Returns an directory of still .png images.

mp4_to_png - Returns a spliced .mp4 video.

Note

User must have mmpeg installed.

mp4_to_png - Currently not functional.

References

http://www.ffmpeg.org/

Examples

## Not run: 
mp4_to_png("foo.mp4")

## End(Not run)

trinker/embodied documentation built on May 31, 2019, 8:42 p.m.