mp4_to_png: Convert Between Video/Images

Description Usage Arguments Value Note References Examples

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

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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

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

## End(Not run)

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