Encodes a set of images into a video, using custom container format, codec, fps, and video filters.
av_encode_video(input, output = "video.mp4", framerate = 24,
vfilter = "null", codec = NULL, audio = NULL, verbose = TRUE)a vector with images such as png files. All input files should have the same width and height.
name of the output file. File extension must correspond to a known
container format such as mp4, mkv, mov, or flv.
video framerate in frames per seconds. This is the input fps, the output fps may be different if you specify a filter that modifies speed or interpolates frames.
a string defining an ffmpeg filter graph. This is the same parameter
as the -vf argument in the ffmpeg command line utility.
name of the video codec as listed in av_encoders. The
default is libx264 for most formats, which usually the best choice.
optional file with sounds to add to the video
emit some output and a progress meter counting processed images. Must
be TRUE or FALSE or an integer with a valid log_level.
The container format is determined from the file extension of the output file, for
example mp4, mkv, mov, or flv. Most systems also support gif output, but
the compression~quality for gif is quite bad.
The gifski package is better suited
for generating animated gif files.
It is recommended to use let the encoder choose the codec. Most video formats default
to the libx264 video codec which has excellent compression and works out of the box
on all modern browsers and operating systems.