fix crash if ffmpeg is not installed (tested on windows 11)

2 files changed, 12 insertions, 3 deletions

diff --git a/src/toolkit/ffmpeg.py b/src/toolkit/ffmpeg.py
index 0a536bc..3f083ba 100644
--- a/src/toolkit/ffmpeg.py
+++ b/src/toolkit/ffmpeg.py
@@ -383,6 +383,9 @@ def getAudioDuration(filename):
         fileInfo = checkOutput(command, stderr=subprocess.STDOUT)
     except subprocess.CalledProcessError as ex:
         fileInfo = ex.output
+    except FileNotFoundError:
+        # ffmpeg is possibly not installed
+        return False
 
     try:
         info = fileInfo.decode("utf-8").split('\n')
diff --git a/src/video_thread.py b/src/video_thread.py
index 91ebe93..4a07fb2 100644
--- a/src/video_thread.py
+++ b/src/video_thread.py
@@ -244,9 +244,15 @@ class Worker(QtCore.QObject):
             )
             self.staticComponents[compNo] = None
 
-        ffmpegCommand = createFfmpegCommand(
-            self.inputFile, self.outputFile, self.components, duration
-        )
+        try:
+            ffmpegCommand = createFfmpegCommand(
+                self.inputFile, self.outputFile, self.components, duration
+            )
+        except sp.CalledProcessError as e:
+            self.components[0]._error.emit("Ffmpeg could not be found. Is it installed?", str(e))
+            self.cancelExport()
+            return
+
         cmd = " ".join(ffmpegCommand)
         print('###### FFMPEG COMMAND ######\n%s' % cmd)
         print('############################')