185 lines
4.0 KiB
JavaScript
185 lines
4.0 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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*! Video-related methods
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*/
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module.exports = function(proto) {
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/**
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* Disable video in the output
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*
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* @method FfmpegCommand#noVideo
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* @category Video
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* @aliases withNoVideo
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*
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* @return FfmpegCommand
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*/
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proto.withNoVideo =
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proto.noVideo = function() {
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this._currentOutput.video.clear();
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this._currentOutput.videoFilters.clear();
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this._currentOutput.video('-vn');
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return this;
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};
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/**
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* Specify video codec
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*
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* @method FfmpegCommand#videoCodec
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* @category Video
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* @aliases withVideoCodec
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*
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* @param {String} codec video codec name
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* @return FfmpegCommand
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*/
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proto.withVideoCodec =
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proto.videoCodec = function(codec) {
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this._currentOutput.video('-vcodec', codec);
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return this;
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};
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/**
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* Specify video bitrate
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*
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* @method FfmpegCommand#videoBitrate
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* @category Video
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* @aliases withVideoBitrate
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*
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* @param {String|Number} bitrate video bitrate in kbps (with an optional 'k' suffix)
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* @param {Boolean} [constant=false] enforce constant bitrate
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* @return FfmpegCommand
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*/
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proto.withVideoBitrate =
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proto.videoBitrate = function(bitrate, constant) {
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bitrate = ('' + bitrate).replace(/k?$/, 'k');
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this._currentOutput.video('-b:v', bitrate);
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if (constant) {
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this._currentOutput.video(
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'-maxrate', bitrate,
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'-minrate', bitrate,
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'-bufsize', '3M'
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);
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}
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return this;
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};
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/**
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* Specify custom video 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.videoFilters('filter1');
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*
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* @example
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* command.videoFilters('filter1', 'filter2=param1=value1:param2=value2');
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*
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* @example
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* command.videoFilters(['filter1', 'filter2']);
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*
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* @example
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* command.videoFilters([
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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.videoFilters(
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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#videoFilters
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* @category Video
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* @aliases withVideoFilter,withVideoFilters,videoFilter
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*
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* @param {...String|String[]|Object[]} filters video 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.withVideoFilter =
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proto.withVideoFilters =
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proto.videoFilter =
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proto.videoFilters = 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.videoFilters(utils.makeFilterStrings(filters));
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return this;
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};
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/**
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* Specify output FPS
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*
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* @method FfmpegCommand#fps
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* @category Video
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* @aliases withOutputFps,withOutputFPS,withFpsOutput,withFPSOutput,withFps,withFPS,outputFPS,outputFps,fpsOutput,FPSOutput,FPS
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*
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* @param {Number} fps output FPS
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* @return FfmpegCommand
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*/
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proto.withOutputFps =
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proto.withOutputFPS =
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proto.withFpsOutput =
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proto.withFPSOutput =
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proto.withFps =
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proto.withFPS =
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proto.outputFPS =
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proto.outputFps =
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proto.fpsOutput =
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proto.FPSOutput =
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proto.fps =
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proto.FPS = function(fps) {
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this._currentOutput.video('-r', fps);
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return this;
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};
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/**
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* Only transcode a certain number of frames
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*
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* @method FfmpegCommand#frames
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* @category Video
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* @aliases takeFrames,withFrames
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*
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* @param {Number} frames frame count
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* @return FfmpegCommand
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*/
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proto.takeFrames =
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proto.withFrames =
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proto.frames = function(frames) {
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this._currentOutput.video('-vframes', frames);
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return this;
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};
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};
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