diff --git a/cameraview/src/main/gles/com/otaliastudios/cameraview/MediaEncoder.java b/cameraview/src/main/gles/com/otaliastudios/cameraview/MediaEncoder.java
index 629d742d..bb5ca853 100644
--- a/cameraview/src/main/gles/com/otaliastudios/cameraview/MediaEncoder.java
+++ b/cameraview/src/main/gles/com/otaliastudios/cameraview/MediaEncoder.java
@@ -73,14 +73,12 @@ abstract class MediaEncoder {
     }
 
     /**
-     * Extracts all pending data from the encoder and forwards it to the muxer.
+     * Extracts all pending data that was written and encoded into {@link #mMediaCodec},
+     * and forwards it to the muxer.
      * <p>
      * If endOfStream is not set, this returns when there is no more data to drain.  If it
      * is set, we send EOS to the encoder, and then iterate until we see EOS on the output.
      * Calling this with endOfStream set should be done once, right before stopping the muxer.
-     * <p>
-     * We're just using the muxer to get a .mp4 file (instead of a raw H.264 stream).  We're
-     * not recording audio.
      */
     protected void drain(boolean endOfStream) {
         if (endOfStream) {