diff --git a/examples/transcode-audio.rs b/examples/transcode-audio.rs
index a1bd3de..4b9cbfd 100644
--- a/examples/transcode-audio.rs
+++ b/examples/transcode-audio.rs
@@ -89,7 +89,7 @@ fn transcoder<P: AsRef<Path>>(
 		encoder.set_flags(ffmpeg::codec::flag::Flags::GLOBAL_HEADER);
 	}
 
-	encoder.set_sample_rate(decoder.sample_rate() as i32);
+	encoder.set_sample_rate(decoder.sample_rate());
 	encoder.set_channel_layout(channel_layout);
 	encoder.set_channels(channel_layout.channels());
 	encoder.set_format(
diff --git a/src/codec/encoder/audio.rs b/src/codec/encoder/audio.rs
index e74653f..aee93ca 100644
--- a/src/codec/encoder/audio.rs
+++ b/src/codec/encoder/audio.rs
@@ -77,9 +77,9 @@ impl Audio {
 		}
 	}
 
-	pub fn set_sample_rate(&mut self, rate: i32) {
+	pub fn set_sample_rate(&mut self, rate: u32) {
 		unsafe {
-			(*self.as_mut_ptr()).sample_rate = rate;
+			(*self.as_mut_ptr()).sample_rate = rate as c_int;
 		}
 	}