Create a video from slides and a script

ari_narrate creates a video from a script written in markdown and HTML slides created with rmarkdown or a similar package. This function uses Amazon Polly via ari_spin.

ari_narrate(
  script,
  slides,
  output = tempfile(fileext = ".mp4"),
  voice = text2speech::tts_default_voice(service = service),
  service = "amazon",
  capture_method = c("vectorized", "iterative"),
  subtitles = FALSE,
  ...,
  verbose = FALSE,
  audio_codec = get_audio_codec(),
  video_codec = get_video_codec(),
  cleanup = TRUE
)

Arguments

script	Either a markdown file where every paragraph will be read over a corresponding slide, or an .Rmd file where each HTML comment will be used for narration.
slides	A path or URL for an HTML slideshow created with rmarkdown, xaringan, or a similar package.
output	The path to the video file which will be created.
voice	The voice you want to use. See tts_voices for more information about what voices are available.
service	speech synthesis service to use, passed to tts. Either "amazon" or "google".
capture_method	Either "vectorized" or "iterative". The vectorized mode is faster though it can cause screens to repeat. If making a video from an ioslides_presentation you should use "iterative".
subtitles	Should a .srt file be created with subtitles? The default value is FALSE. If TRUE then a file with the same name as the output argument will be created, but with the file extension .srt.
...	Arguments that will be passed to webshot.
verbose	print diagnostic messages. If > 1, then more are printed
audio_codec	The audio encoder for the splicing. If this fails, try copy.
video_codec	The video encoder for the splicing. If this fails, see ffmpeg -codecs
cleanup	If TRUE, interim files are deleted

Value

The output from ari_spin

Examples

if (FALSE) {

# 
ari_narrate(system.file("test", "ari_intro_script.md", package = "ari"),
            system.file("test", "ari_intro.html", package = "ari"),
            voice = "Joey")

}