diff --git a/docs/api/en/textures/VideoTexture.html b/docs/api/en/textures/VideoTexture.html
index b9c2b2d8188256..9a2cd42041c790 100644
--- a/docs/api/en/textures/VideoTexture.html
+++ b/docs/api/en/textures/VideoTexture.html
@@ -49,8 +49,9 @@ <h3>[name]( [param:Video video], [param:Constant mapping], [param:Constant wrapS
 		[page:Constant minFilter] -- How the texture is sampled when a texel covers less than one pixel.
 		The default is [page:Textures THREE.LinearMipmapLinearFilter]. See [page:Textures minification filter constants] for other choices.<br />
 
-		[page:Constant format] -- The format used in the texture.
-		See [page:Textures format constants] for other choices.<br />
+		[page:Constant format] -- The default is [page:Textures THREE.RGBFormat].
+		See [page:Textures format constants] for other choices.
+		Note that a bug has been reported with Firefox's WebGL implementation where use of [page:Textures THREE.RGBFormat] on a VideoTexture can result in a significant performance penalty, if you encounter this issue it is recommended to pass in [page:Textures THREE.RGBAFormat] instead.<br />
 
 		[page:Constant type] -- Default is [page:Textures THREE.UnsignedByteType].
 		See [page:Textures type constants] for other choices.<br />