diff --git a/src/util/channel_layout.rs b/src/util/channel_layout.rs
index 153e27b..8b3ae84 100644
--- a/src/util/channel_layout.rs
+++ b/src/util/channel_layout.rs
@@ -31,8 +31,13 @@ bitflags! {
 		const SURROUND_DIRECT_LEFT  = AV_CH_SURROUND_DIRECT_LEFT;
 		const SURROUND_DIRECT_RIGHT = AV_CH_SURROUND_DIRECT_RIGHT;
 		const LOW_FREQUENCY_2       = AV_CH_LOW_FREQUENCY_2;
-		const NATIVE                = AV_CH_LAYOUT_NATIVE;
+		const TOP_SIDE_LEFT         = AV_CH_TOP_SIDE_LEFT;
+		const TOP_SIDE_RIGHT        = AV_CH_TOP_SIDE_RIGHT;
+		const BOTTOM_FRONT_CENTER   = AV_CH_BOTTOM_FRONT_CENTER;
+		const BOTTOM_FRONT_LEFT     = AV_CH_BOTTOM_FRONT_LEFT;
+		const BOTTOM_FRONT_RIGHT    = AV_CH_BOTTOM_FRONT_RIGHT;
 
+		const NATIVE             = AV_CH_LAYOUT_NATIVE;
 		const MONO               = AV_CH_LAYOUT_MONO;
 		const STEREO             = AV_CH_LAYOUT_STEREO;
 		const _2POINT1           = AV_CH_LAYOUT_2POINT1;