allow merge with multi cut

should cover #98

src/ffmpeg.js

@@ -54,14 +54,9 @@ function handleProgress(process, cutDuration, onProgress) {
 }
 
 async function cut({
-  customOutDir, filePath, format, cutFrom, cutTo, cutToApparent, videoDuration, rotation,
-  includeAllStreams, onProgress, stripAudio, keyframeCut,
+  filePath, format, cutFrom, cutTo, cutToApparent, videoDuration, rotation,
+  includeAllStreams, onProgress, stripAudio, keyframeCut, outPath,
 }) {
-  const ext = path.extname(filePath) || `.${format}`;
-  const cutSpecification = `${formatDuration(cutFrom, true)}-${formatDuration(cutToApparent, true)}`;
-
-  const outPath = getOutPath(customOutDir, filePath, `${cutSpecification}${ext}`);
-
   console.log('Cutting from', cutFrom, 'to', cutToApparent);
 
   const cutDuration = cutToApparent - cutFrom;
@@ -121,11 +116,19 @@ async function cutMultiple({
     return onProgress((sum(Object.values(singleProgresses)) / segments.length));
   }
 
+  const outFiles = [];
+
   let i = 0;
   // eslint-disable-next-line no-restricted-syntax
   for (const { cutFrom, cutTo, cutToApparent } of segments) {
+    const ext = path.extname(filePath) || `.${format}`;
+    const cutSpecification = `${formatDuration(cutFrom, true)}-${formatDuration(cutToApparent, true)}`;
+
+    const outPath = getOutPath(customOutDir, filePath, `${cutSpecification}${ext}`);
+
     // eslint-disable-next-line no-await-in-loop
     await cut({
+      outPath,
       customOutDir,
       filePath,
       format,
@@ -140,8 +143,13 @@ async function cutMultiple({
       // eslint-disable-next-line no-loop-func
       onProgress: progress => onSingleProgress(i, progress),
     });
+
+    outFiles.push(outPath);
+
     i += 1;
   }
+
+  return outFiles;
 }
 
 async function html5ify(filePath, outPath, encodeVideo) {
@@ -166,10 +174,7 @@ async function html5ify(filePath, outPath, encodeVideo) {
   await transferTimestamps(filePath, outPath);
 }
 
-async function mergeFiles(paths) {
-  const firstPath = paths[0];
-  const ext = path.extname(firstPath);
-  const outPath = `${firstPath}-merged${ext}`;
+async function mergeFiles(paths, outPath) {
   console.log('Merging files', { paths }, 'to', outPath);
 
   // https://blog.yo1.dog/fix-for-ffmpeg-protocol-not-on-whitelist-error-for-urls/
@@ -196,6 +201,19 @@ async function mergeFiles(paths) {
   console.log(result.stdout);
 }
 
+async function mergeAnyFiles(paths) {
+  const firstPath = paths[0];
+  const ext = path.extname(firstPath);
+  const outPath = `${firstPath}-merged${ext}`;
+  return mergeFiles(paths, outPath);
+}
+
+async function autoMergeSegments({ customOutDir, sourceFile, segmentPaths }) {
+  const ext = path.extname(sourceFile);
+  const outPath = getOutPath(customOutDir, sourceFile, `cut-merged-${new Date().getTime()}${ext}`);
+  return mergeFiles(segmentPaths, outPath);
+}
+
 /**
  * ffmpeg only supports encoding certain formats, and some of the detected input
  * formats are not the same as the names used for encoding.
@@ -311,6 +329,7 @@ module.exports = {
   cutMultiple,
   getFormat,
   html5ify,
-  mergeFiles,
+  mergeAnyFiles,
+  autoMergeSegments,
   extractAllStreams,
 };

src/renderer.jsx

@@ -95,6 +95,7 @@ const globalState = {
   captureFormat: 'jpeg',
   customOutDir: undefined,
   keyframeCut: true,
+  autoMerge: false,
 };
 
 class App extends React.Component {
@@ -169,7 +170,7 @@ class App extends React.Component {
 
           // TODO customOutDir ?
           // console.log('merge', paths);
-          await ffmpeg.mergeFiles(paths);
+          await ffmpeg.mergeAnyFiles(paths);
         } catch (err) {
           errorToast('Failed to merge files. Make sure they are all of the exact same format and codecs');
           console.error('Failed to merge files', err);
@@ -343,6 +344,8 @@ class App extends React.Component {
 
   toggleKeyframeCut = () => this.setState(({ keyframeCut }) => ({ keyframeCut: !keyframeCut }));
 
+  toggleAutoMerge = () => this.setState(({ autoMerge }) => ({ autoMerge: !autoMerge }));
+
   addCutSegment = () => {
     const { cutSegments, currentTime, duration } = this.state;
 
@@ -424,7 +427,7 @@ class App extends React.Component {
   cutClick = async () => {
     const {
       filePath, customOutDir, fileFormat, duration, includeAllStreams,
-      stripAudio, keyframeCut, working, cutSegments,
+      stripAudio, keyframeCut, autoMerge, working, cutSegments,
     } = this.state;
 
     if (working) {
@@ -451,7 +454,7 @@ class App extends React.Component {
         cutToApparent: this.getApparentCutEndTime(i),
       }));
 
-      await ffmpeg.cutMultiple({
+      const outFiles = await ffmpeg.cutMultiple({
         customOutDir,
         filePath,
         format: fileFormat,
@@ -463,6 +466,16 @@ class App extends React.Component {
         segments,
         onProgress: this.onCutProgress,
       });
+
+      if (outFiles.length > 1 && autoMerge) {
+        this.onCutProgress(0); // TODO
+
+        await ffmpeg.autoMergeSegments({
+          customOutDir,
+          sourceFile: filePath,
+          segmentPaths: outFiles,
+        });
+      }
     } catch (err) {
       console.error('stdout:', err.stdout);
       console.error('stderr:', err.stderr);
@@ -471,6 +484,7 @@ class App extends React.Component {
         errorToast('Whoops! ffmpeg was unable to cut this video. It may be of an unknown format or codec combination');
         return;
       }
+
       showFfmpegFail(err);
     } finally {
       this.setState({ working: false });
@@ -565,7 +579,7 @@ class App extends React.Component {
     const {
       working, filePath, duration: durationRaw, cutProgress, currentTime, playing,
       fileFormat, playbackRate, keyframeCut, includeAllStreams, stripAudio, captureFormat,
-      helpVisible, currentSeg, cutSegments,
+      helpVisible, currentSeg, cutSegments, autoMerge,
     } = this.state;
 
     const duration = durationRaw || 1;
@@ -764,11 +778,19 @@ class App extends React.Component {
 
           <button
             type="button"
-            title={`Add cut segment ${currentSeg + 1}`}
+            title="Add cut segment"
             onClick={withBlur(() => this.addCutSegment())}
           >
             c+
           </button>
+
+          <button
+            type="button"
+            title={`Auto merge segments to one file after export? ${autoMerge ? 'Auto merge enabled' : 'No merging'}`}
+            onClick={withBlur(this.toggleAutoMerge)}
+          >
+            {autoMerge ? 'am' : 'nm'}
+          </button>
         </div>
 
         <div className="right-menu">