Merge pull request #5 from symblai/arjun-09-patch-1

Added preserveChannelLayout to transcodeMediaFile

Author: arjun-09

lib/media/index.js

@@ -11,7 +11,7 @@ const replaceExtension = (fileName, extension) => {
  * @param outputFormat
  * @return {Promise<[]>} Promise of list of unsuccessful files
  */
-const transcodeMediaFiles = async (files = [], outputFormat) => {
+const transcodeMediaFiles = async (files = [], outputFormat, options = {}) => {
     const unsuccessfulFiles = [];
     let _outputFormat = outputFormat;
     for (const file of files) {
@@ -22,7 +22,7 @@ const transcodeMediaFiles = async (files = [], outputFormat) => {
             _outputFile = replaceExtension(inputFile, outputFormat);
         }
         try {
-            await transcodeMediaFile(inputFile, _outputFile, _outputFormat);
+            await transcodeMediaFile(inputFile, _outputFile, _outputFormat, options);
         } catch (e) {
             console.error(e);
             unsuccessfulFiles.push({
@@ -62,22 +62,36 @@ const transcodeMediaFile = (inputFile, outputFile, outputFormat, options = {}) =
         throw `Third argument 'outputFormat' must be provided.`
     }
 
-    const {audioChannels, inputs = []} = options;
+    const {audioChannels, preserveChannelsAndLayout} = options;
     let _audioChannels = audioChannels || 1;
+
     return new Promise((resolve, reject) => {
-        ffmpeg(inputFile)
-            .format(outputFormat)
-            .inputOptions(inputs)
-            .audioChannels(_audioChannels)
-            .on('end', () => {
-                resolve({
-                    outPath: outputFile
-                });
-            })
-            .on('error', (err) => {
-                reject(err);
-            })
-            .save(outputFile);
+        if (!preserveChannelsAndLayout) {
+            ffmpeg(inputFile)
+                .format(outputFormat)
+                .audioChannels(_audioChannels)
+                .on('end', () => {
+                    resolve({
+                        outPath: outputFile
+                    });
+                })
+                .on('error', (err) => {
+                    reject(err);
+                })
+                .save(outputFile);
+        } else {
+            ffmpeg(inputFile)
+                .format(outputFormat)
+                .on('end', () => {
+                    resolve({
+                        outPath: outputFile
+                    });
+                })
+                .on('error', (err) => {
+                    reject(err);
+                })
+                .save(outputFile);
+        }
     });
 };