diff --git a/libraries/effect/src/main/java/androidx/media3/effect/ExternalTextureManager.java b/libraries/effect/src/main/java/androidx/media3/effect/ExternalTextureManager.java
index a07d486e37..c6ecd4ed98 100644
--- a/libraries/effect/src/main/java/androidx/media3/effect/ExternalTextureManager.java
+++ b/libraries/effect/src/main/java/androidx/media3/effect/ExternalTextureManager.java
@@ -191,6 +191,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
   @Override
   public void setSamplingGlShaderProgram(GlShaderProgram samplingGlShaderProgram) {
     checkState(samplingGlShaderProgram instanceof ExternalShaderProgram);
+    externalShaderProgramInputCapacity.set(0);
     this.externalShaderProgram = (ExternalShaderProgram) samplingGlShaderProgram;
   }