diff --git a/app/render/audioparams.cpp b/app/render/audioparams.cpp
index 5ea10389e..24c308a33 100644
--- a/app/render/audioparams.cpp
+++ b/app/render/audioparams.cpp
@@ -95,38 +95,38 @@ qint64 AudioParams::time_to_bytes(const rational &time) const
   return time_to_bytes(time.toDouble());
 }
 
-int AudioParams::time_to_samples(const double &time) const
+qint64 AudioParams::time_to_samples(const double &time) const
 {
   Q_ASSERT(is_valid());
 
-  return qFloor(time * sample_rate());
+  return qRound64(time * sample_rate());
 }
 
-int AudioParams::time_to_samples(const rational &time) const
+qint64 AudioParams::time_to_samples(const rational &time) const
 {
   return time_to_samples(time.toDouble());
 }
 
-int AudioParams::samples_to_bytes(const int &samples) const
+qint64 AudioParams::samples_to_bytes(const qint64 &samples) const
 {
   Q_ASSERT(is_valid());
 
   return samples * channel_count() * bytes_per_sample_per_channel();
 }
 
-rational AudioParams::samples_to_time(const int &samples) const
+rational AudioParams::samples_to_time(const qint64 &samples) const
 {
   return rational(samples, sample_rate());
 }
 
-int AudioParams::bytes_to_samples(const int &bytes) const
+qint64 AudioParams::bytes_to_samples(const qint64 &bytes) const
 {
   Q_ASSERT(is_valid());
 
   return bytes / (channel_count() * bytes_per_sample_per_channel());
 }
 
-rational AudioParams::bytes_to_time(const int &bytes) const
+rational AudioParams::bytes_to_time(const qint64 &bytes) const
 {
   Q_ASSERT(is_valid());
 
diff --git a/app/render/audioparams.h b/app/render/audioparams.h
index db9c0aa86..4ce4ccfbf 100644
--- a/app/render/audioparams.h
+++ b/app/render/audioparams.h
@@ -94,12 +94,12 @@ public:
 
   qint64 time_to_bytes(const double& time) const;
   qint64 time_to_bytes(const rational& time) const;
-  int time_to_samples(const double& time) const;
-  int time_to_samples(const rational& time) const;
-  int samples_to_bytes(const int& samples) const;
-  rational samples_to_time(const int& samples) const;
-  int bytes_to_samples(const int &bytes) const;
-  rational bytes_to_time(const int &bytes) const;
+  qint64 time_to_samples(const double& time) const;
+  qint64 time_to_samples(const rational& time) const;
+  qint64 samples_to_bytes(const qint64& samples) const;
+  rational samples_to_time(const qint64& samples) const;
+  qint64 bytes_to_samples(const qint64 &bytes) const;
+  rational bytes_to_time(const qint64 &bytes) const;
   int channel_count() const;
   int bytes_per_sample_per_channel() const;
   int bits_per_sample() const;