Add button to strip audio (#71)

src/ffmpeg.js

@@ -57,7 +57,7 @@ function handleProgress(process, cutDuration, onProgress) {
 
 async function cut({
   customOutDir, filePath, format, cutFrom, cutTo, videoDuration, rotation, includeAllStreams,
-  onProgress,
+  onProgress, stripAudio,
 }) {
   const ext = path.extname(filePath) || `.${format}`;
   const cutSpecification = `${util.formatDuration(cutFrom, true)}-${util.formatDuration(cutTo, true)}`;
@@ -72,7 +72,10 @@ async function cut({
 
   const rotationArgs = rotation !== undefined ? ['-metadata:s:v:0', `rotate=${rotation}`] : [];
   const ffmpegArgs = [
-    '-i', filePath, '-y', '-vcodec', 'copy', '-acodec', 'copy', '-scodec', 'copy',
+    '-i', filePath, '-y',
+    ...(stripAudio ? ['-an'] : ['-acodec', 'copy']),
+    '-vcodec', 'copy',
+    '-scodec', 'copy',
     ...cutFromArgs, ...cutToArgs,
     ...(includeAllStreams ? ['-map', '0'] : []),
     '-map_metadata', '0',

src/renderer.jsx

@@ -98,6 +98,7 @@ class App extends React.Component {
       rotation: 360,
       cutProgress: undefined,
       includeAllStreams: false,
+      stripAudio: false,
     };
 
     this.state = _.cloneDeep(defaultState);
@@ -315,6 +316,7 @@ class App extends React.Component {
     const videoDuration = this.state.duration;
     const rotation = this.isRotationSet() ? this.getRotation() : undefined;
     const includeAllStreams = this.state.includeAllStreams;
+    const stripAudio = this.state.stripAudio;
 
     if (!this.areCutTimesSet()) {
       return alert('Please select both start and end time');
@@ -334,6 +336,7 @@ class App extends React.Component {
         videoDuration,
         rotation,
         includeAllStreams,
+        stripAudio,
         onProgress: progress => this.onCutProgress(progress),
       });
     } catch (err) {
@@ -545,6 +548,13 @@ class App extends React.Component {
           {this.state.includeAllStreams ? 'all' : 'ps'}
         </button>
 
+        <button
+          title={`Delete audio? Current: ${this.state.stripAudio ? 'delete audio tracks' : "don't delete audio tracks"}`}
+          onClick={withBlur(() => this.setState({ stripAudio: !this.state.stripAudio }))}
+        >
+          {this.state.stripAudio ? 'da' : 'ka'}
+        </button>
+
         <button
           title={`Set output rotation. Current: ${this.isRotationSet() ? this.getRotationStr() : 'Don\'t modify'}`}
           onClick={withBlur(() => this.increaseRotation())}