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/*jshint node:true*/
'use strict';
var utils = require('../utils');
/*
*! Video-related methods
*/
module.exports = function(proto) {
/**
* Disable video in the output
*
* @method FfmpegCommand#noVideo
* @category Video
* @aliases withNoVideo
*
* @return FfmpegCommand
*/
proto.withNoVideo =
proto.noVideo = function() {
this._currentOutput.video.clear();
this._currentOutput.videoFilters.clear();
this._currentOutput.video('-vn');
return this;
};
/**
* Specify video codec
*
* @method FfmpegCommand#videoCodec
* @category Video
* @aliases withVideoCodec
*
* @param {String} codec video codec name
* @return FfmpegCommand
*/
proto.withVideoCodec =
proto.videoCodec = function(codec) {
this._currentOutput.video('-vcodec', codec);
return this;
};
/**
* Specify video bitrate
*
* @method FfmpegCommand#videoBitrate
* @category Video
* @aliases withVideoBitrate
*
* @param {String|Number} bitrate video bitrate in kbps (with an optional 'k' suffix)
* @param {Boolean} [constant=false] enforce constant bitrate
* @return FfmpegCommand
*/
proto.withVideoBitrate =
proto.videoBitrate = function(bitrate, constant) {
bitrate = ('' + bitrate).replace(/k?$/, 'k');
this._currentOutput.video('-b:v', bitrate);
if (constant) {
this._currentOutput.video(
'-maxrate', bitrate,
'-minrate', bitrate,
'-bufsize', '3M'
);
}
return this;
};
/**
* Specify custom video filter(s)
*
* Can be called both with one or many filters, or a filter array.
*
* @example
* command.videoFilters('filter1');
*
* @example
* command.videoFilters('filter1', 'filter2=param1=value1:param2=value2');
*
* @example
* command.videoFilters(['filter1', 'filter2']);
*
* @example
* command.videoFilters([
* {
* filter: 'filter1'
* },
* {
* filter: 'filter2',
* options: 'param=value:param=value'
* }
* ]);
*
* @example
* command.videoFilters(
* {
* filter: 'filter1',
* options: ['value1', 'value2']
* },
* {
* filter: 'filter2',
* options: { param1: 'value1', param2: 'value2' }
* }
* );
*
* @method FfmpegCommand#videoFilters
* @category Video
* @aliases withVideoFilter,withVideoFilters,videoFilter
*
* @param {...String|String[]|Object[]} filters video filter strings, string array or
* filter specification array, each with the following properties:
* @param {String} filters.filter filter name
* @param {String|String[]|Object} [filters.options] filter option string, array, or object
* @return FfmpegCommand
*/
proto.withVideoFilter =
proto.withVideoFilters =
proto.videoFilter =
proto.videoFilters = function(filters) {
if (arguments.length > 1) {
filters = [].slice.call(arguments);
}
if (!Array.isArray(filters)) {
filters = [filters];
}
this._currentOutput.videoFilters(utils.makeFilterStrings(filters));
return this;
};
/**
* Specify output FPS
*
* @method FfmpegCommand#fps
* @category Video
* @aliases withOutputFps,withOutputFPS,withFpsOutput,withFPSOutput,withFps,withFPS,outputFPS,outputFps,fpsOutput,FPSOutput,FPS
*
* @param {Number} fps output FPS
* @return FfmpegCommand
*/
proto.withOutputFps =
proto.withOutputFPS =
proto.withFpsOutput =
proto.withFPSOutput =
proto.withFps =
proto.withFPS =
proto.outputFPS =
proto.outputFps =
proto.fpsOutput =
proto.FPSOutput =
proto.fps =
proto.FPS = function(fps) {
this._currentOutput.video('-r', fps);
return this;
};
/**
* Only transcode a certain number of frames
*
* @method FfmpegCommand#frames
* @category Video
* @aliases takeFrames,withFrames
*
* @param {Number} frames frame count
* @return FfmpegCommand
*/
proto.takeFrames =
proto.withFrames =
proto.frames = function(frames) {
this._currentOutput.video('-vframes', frames);
return this;
};
};
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