Fix conflicts

src/createFFmpeg.js

@@ -3,6 +3,7 @@ const { setLogging, log } = require('./utils/log');
 const resolvePaths = require('./utils/resolvePaths');
 const parseProgress = require('./utils/parseProgress');
 const stringList2pointer = require('./utils/stringList2pointer');
+const parseArgs = require('./utils/parseArgs');
 const {
   defaultOptions,
   getModule,
@@ -92,7 +93,7 @@ module.exports = (_options = {}) => {
     } else {
       running = true;
       return new Promise((resolve) => {
-        const args = [...defaultArgs, ..._args.trim().split(' ')].filter((s) => s.length !== 0);
+        const args = [...defaultArgs, ...parseArgs(_args)].filter((s) => s.length !== 0);
         log('info', `ffmpeg command: ${args.join(' ')}`);
         runResolve = resolve;
         ffmpeg(args.length, stringList2pointer(Module, args));

src/utils/parseArgs.js

@@ -0,0 +1,51 @@
+module.exports = (cmd) => {
+  const args = [];
+  let nextDelimiter = 0;
+  let prevDelimiter = 0;
+  // eslint-disable-next-line no-cond-assign
+  while ((nextDelimiter = cmd.indexOf(' ', prevDelimiter)) >= 0) {
+    let arg = cmd.substring(prevDelimiter, nextDelimiter);
+    let quoteIdx = arg.indexOf('\'');
+    let dblQuoteIdx = arg.indexOf('"');
+
+    if (quoteIdx === 0 || dblQuoteIdx === 0) {
+      /* The argument has a quote at the start i.e, 'id=0,streams=0 id=1,streams=1' */
+      const delimiter = arg[0];
+      const endDelimiter = cmd.indexOf(delimiter, prevDelimiter + 1);
+
+      if (endDelimiter < 0) {
+        throw new Error(`Bad command escape sequence ${delimiter} near ${nextDelimiter}`);
+      }
+
+      arg = cmd.substring(prevDelimiter + 1, endDelimiter);
+      prevDelimiter = endDelimiter + 2;
+      args.push(arg);
+    } else if (quoteIdx > 0 || dblQuoteIdx > 0) {
+      /* The argument has a quote in it, it must be ended correctly i,e. title='test' */
+      if (quoteIdx === -1) quoteIdx = Infinity;
+      if (dblQuoteIdx === -1) dblQuoteIdx = Infinity;
+      const delimiter = (quoteIdx < dblQuoteIdx) ? '\'' : '"';
+      const quoteOffset = Math.min(quoteIdx, dblQuoteIdx);
+      const endDelimiter = cmd.indexOf(delimiter, prevDelimiter + quoteOffset + 1);
+
+      if (endDelimiter < 0) {
+        throw new Error(`Bad command escape sequence ${delimiter} near ${nextDelimiter}`);
+      }
+
+      arg = cmd.substring(prevDelimiter, endDelimiter + 1);
+      prevDelimiter = endDelimiter + 2;
+      args.push(arg);
+    } else if (arg !== '') {
+      args.push(arg);
+      prevDelimiter = nextDelimiter + 1;
+    } else {
+      prevDelimiter = nextDelimiter + 1;
+    }
+  }
+
+  if (prevDelimiter !== cmd.length) {
+    args.push(cmd.substring(prevDelimiter));
+  }
+
+  return args;
+};