hook_ffmpeg_html() uses FFmpeg to convert images to a video;
hook_scianimator() uses the JavaScript library SciAnimator to create
animations; hook_r2swf() uses the R2SWF package.
hook_ffmpeg_html(x, options)hook_scianimator(x, options)
hook_r2swf(x, options)
Filename for the plot (a character string).
A list of the current chunk options.
These hooks are mainly for the package option animation.fun, e.g. you
can set opts_knit$set(animation.fun = hook_scianimator).