avoid division by 0 false positive

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Exiv2 · Jul 2, 2023 · d18a218 · d18a218
1 parent 4783581
commit d18a218
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/quicktimevideo.cpp b/src/quicktimevideo.cpp
@@ -1155,9 +1155,12 @@ void QuickTimeVideo::timeToSampleDecoder() {
     io_->readOrThrow(buf.data(), 4);
     timeOfFrames = Safe::add(timeOfFrames, temp * buf.read_uint32(0, bigEndian));
   }
-  if (currentStream_ == Video)
+  if (currentStream_ == Video) {
+    if (timeOfFrames == 0)
+      timeOfFrames = 1;
     xmpData_["Xmp.video.FrameRate"] =
         static_cast<double>(totalframes) * static_cast<double>(timeScale_) / static_cast<double>(timeOfFrames);
+  }
 }  // QuickTimeVideo::timeToSampleDecoder
 
 void QuickTimeVideo::sampleDesc(size_t size) {