初始化环境文件

node_modules/fluent-ffmpeg/lib/presets/divx.js

@@ -0,0 +1,14 @@
+/*jshint node:true */
+'use strict';
+
+exports.load = function(ffmpeg) {
+  ffmpeg
+    .format('avi')
+    .videoBitrate('1024k')
+    .videoCodec('mpeg4')
+    .size('720x?')
+    .audioBitrate('128k')
+    .audioChannels(2)
+    .audioCodec('libmp3lame')
+    .outputOptions(['-vtag DIVX']);
+};

node_modules/fluent-ffmpeg/lib/presets/flashvideo.js

@@ -0,0 +1,16 @@
+/*jshint node:true */
+'use strict';
+
+exports.load = function(ffmpeg) {
+  ffmpeg
+    .format('flv')
+    .flvmeta()
+    .size('320x?')
+    .videoBitrate('512k')
+    .videoCodec('libx264')
+    .fps(24)
+    .audioBitrate('96k')
+    .audioCodec('aac')
+    .audioFrequency(22050)
+    .audioChannels(2);
+};

node_modules/fluent-ffmpeg/lib/presets/podcast.js

@@ -0,0 +1,16 @@
+/*jshint node:true */
+'use strict';
+
+exports.load = function(ffmpeg) {
+  ffmpeg
+    .format('m4v')
+    .videoBitrate('512k')
+    .videoCodec('libx264')
+    .size('320x176')
+    .audioBitrate('128k')
+    .audioCodec('aac')
+    .audioChannels(1)
+    .outputOptions(['-flags', '+loop', '-cmp', '+chroma', '-partitions','+parti4x4+partp8x8+partb8x8', '-flags2',
+      '+mixed_refs', '-me_method umh', '-subq 5', '-bufsize 2M', '-rc_eq \'blurCplx^(1-qComp)\'',
+      '-qcomp 0.6', '-qmin 10', '-qmax 51', '-qdiff 4', '-level 13' ]);
+};