diff --git a/src/render_data.rs b/src/render_data.rs
index da2e0d5..576737a 100644
--- a/src/render_data.rs
+++ b/src/render_data.rs
@@ -69,8 +69,9 @@ impl RenderManager {
         let mut encoder =
             opus2::Encoder::new(sample_rate, channels, Application::Audio).expect("TODO");
 
-        const MAX_SIZE: usize = usize::MAX / 4;
-        let encode_result = encoder.encode_vec(&samples, MAX_SIZE);
+        let estimated_max_size = (samples.len() * sample_rate as usize) * size_of::<i16>() / size_of::<u8>();
+
+        let encode_result = encoder.encode_vec(&samples, estimated_max_size);
         if let Err(error) = &encode_result {
             tracing::error!(?error);
         } else {