codec: Describe a codec
In pmur002/ffmpeg: R interface to the ffmpeg command

Description Usage Arguments Details Value Author(s) References See Also

Create an object that contains a description of a codec for ffmpeg.

copy()
VP8(bitrate = 1, quality = 10, quantizer = NULL, constant = FALSE,
    altref = 0)
VP9(bitrate = 1, quality = 10, quantizer = NULL, constant = FALSE,
    pass = NULL, altref = 1, laginframes = ifelse(altref, 0, 16),
    threads = NULL, speed = NULL, tilecolumns = NULL, frameparallel = 0,
    an = FALSE)
vorbis()

`bitrate`	A number of megabits per second.
`quality`	The constant quality setting (between 4 and 63) for variable bitrate mode.
`quantizer`	If not `NULL`, a vector of two values specifying minimum and maximum quantizer settings (between 0 and 63).
`constant`	A logical indicating whether to use a constant bitrate. If this is `TRUE`, `quality` and `quantizer` are ignored.
`pass`	If not `NULL`, either 1 or 2 to indicate which pass is being encoded (in two-pass encoding).
`altref`	Either 0 or 1, indicating whether to enable (1) or disable (0) the alternate reference frame.
`laginframes`	Number of frames to look ahead for alternate reference frame.
`threads`	Number of threads to use for encoding.
`speed`	Quality/speed ratio (higher numbers speed up encoding at the expense of quality).
`tilecolumns`	Number of tile columns.
`frameparallel`	Enable (1) or disable (0) frame parallel decodability features.
`an`	A logical indicating whether to disable audio recording.