179 lines
3.9 KiB
JavaScript
179 lines
3.9 KiB
JavaScript
/*jshint node:true*/
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'use strict';
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var utils = require('../utils');
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/*
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*! Audio-related methods
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*/
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module.exports = function(proto) {
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/**
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* Disable audio in the output
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*
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* @method FfmpegCommand#noAudio
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* @category Audio
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* @aliases withNoAudio
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* @return FfmpegCommand
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*/
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proto.withNoAudio =
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proto.noAudio = function() {
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this._currentOutput.audio.clear();
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this._currentOutput.audioFilters.clear();
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this._currentOutput.audio('-an');
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return this;
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};
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/**
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* Specify audio codec
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*
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* @method FfmpegCommand#audioCodec
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* @category Audio
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* @aliases withAudioCodec
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*
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* @param {String} codec audio codec name
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* @return FfmpegCommand
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*/
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proto.withAudioCodec =
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proto.audioCodec = function(codec) {
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this._currentOutput.audio('-acodec', codec);
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return this;
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};
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/**
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* Specify audio bitrate
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*
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* @method FfmpegCommand#audioBitrate
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* @category Audio
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* @aliases withAudioBitrate
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*
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* @param {String|Number} bitrate audio bitrate in kbps (with an optional 'k' suffix)
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* @return FfmpegCommand
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*/
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proto.withAudioBitrate =
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proto.audioBitrate = function(bitrate) {
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this._currentOutput.audio('-b:a', ('' + bitrate).replace(/k?$/, 'k'));
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return this;
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};
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/**
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* Specify audio channel count
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*
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* @method FfmpegCommand#audioChannels
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* @category Audio
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* @aliases withAudioChannels
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*
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* @param {Number} channels channel count
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* @return FfmpegCommand
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*/
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proto.withAudioChannels =
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proto.audioChannels = function(channels) {
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this._currentOutput.audio('-ac', channels);
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return this;
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};
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/**
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* Specify audio frequency
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*
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* @method FfmpegCommand#audioFrequency
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* @category Audio
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* @aliases withAudioFrequency
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*
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* @param {Number} freq audio frequency in Hz
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* @return FfmpegCommand
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*/
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proto.withAudioFrequency =
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proto.audioFrequency = function(freq) {
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this._currentOutput.audio('-ar', freq);
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return this;
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};
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/**
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* Specify audio quality
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*
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* @method FfmpegCommand#audioQuality
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* @category Audio
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* @aliases withAudioQuality
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*
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* @param {Number} quality audio quality factor
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* @return FfmpegCommand
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*/
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proto.withAudioQuality =
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proto.audioQuality = function(quality) {
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this._currentOutput.audio('-aq', quality);
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return this;
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};
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/**
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* Specify custom audio filter(s)
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*
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* Can be called both with one or many filters, or a filter array.
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*
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* @example
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* command.audioFilters('filter1');
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*
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* @example
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* command.audioFilters('filter1', 'filter2=param1=value1:param2=value2');
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*
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* @example
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* command.audioFilters(['filter1', 'filter2']);
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*
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* @example
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* command.audioFilters([
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* {
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* filter: 'filter1'
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* },
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* {
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* filter: 'filter2',
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* options: 'param=value:param=value'
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* }
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* ]);
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*
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* @example
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* command.audioFilters(
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* {
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* filter: 'filter1',
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* options: ['value1', 'value2']
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* },
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* {
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* filter: 'filter2',
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* options: { param1: 'value1', param2: 'value2' }
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* }
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* );
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*
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* @method FfmpegCommand#audioFilters
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* @aliases withAudioFilter,withAudioFilters,audioFilter
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* @category Audio
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*
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* @param {...String|String[]|Object[]} filters audio filter strings, string array or
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* filter specification array, each with the following properties:
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* @param {String} filters.filter filter name
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* @param {String|String[]|Object} [filters.options] filter option string, array, or object
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* @return FfmpegCommand
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*/
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proto.withAudioFilter =
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proto.withAudioFilters =
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proto.audioFilter =
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proto.audioFilters = function(filters) {
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if (arguments.length > 1) {
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filters = [].slice.call(arguments);
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}
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if (!Array.isArray(filters)) {
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filters = [filters];
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}
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this._currentOutput.audioFilters(utils.makeFilterStrings(filters));
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return this;
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};
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};
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