diff --git a/builtins/amp-video.md b/builtins/amp-video.md
index 66ba565ead10..d93a7aecfe8d 100644
--- a/builtins/amp-video.md
+++ b/builtins/amp-video.md
@@ -14,25 +14,26 @@ See the License for the specific language governing permissions and
 limitations under the License.
 -->
 
-### <a name="amp-video"></a> `amp-video`
+## <a name="amp-video"></a> `amp-video`
 
-A replacement for the HTML5 `video` tag. Like all embedded external resources in a AMP file, the video is lazily loaded only when the `amp-video` element is in or near the viewport.
+A replacement for the HTML5 `video` tag. Like all embedded external resources in an AMP file, the video is "lazily" loaded only when the `amp-video` element is in or near the viewport.
 
 The `amp-video` component is only to be used for direct HTML5 video file embeds.
 
-#### Behavior
+### Behavior
 
-The `amp-video` component loads the video resource specified by its `src` attribute lazily, at a time determined by the runtime. It can be controlled much the same way as a standard HTML5 `video` tag.
+The `amp-video` component loads the video resource specified by its `src` attribute at a time determined by the runtime. It can be controlled much the same way as a standard HTML5 `video` tag.
 
-The `amp-video` component HTML accepts up to three unique types of HTML nodes as children - `source` tags, a placeholder for before the video starts, and a fallback if the browser doesn’t support HTML5 video.
+The `amp-video` component HTML accepts up to three unique types of HTML nodes as children: `source` tags, a placeholder for before the video starts, and a fallback if the browser doesn’t support HTML5 video.
 
-`source` tag children can be used in the same way as the standard `video` tag, to specify different source files to play.
+ - `source` tag children can be used in the same way as the standard `video` tag, to specify different source files to play.
 
-One or zero immediate child nodes can have the `placeholder` attribute. If present, this node and its children form a placeholder that will display instead of the video. A click or tap anywhere inside of the `amp-video` container will replace the placeholder with the video itself.
+ - One or zero immediate child nodes can have the `placeholder` attribute. If present, this node and its children form a placeholder that will display instead of the video. A click or tap anywhere inside the `amp-video` container replaces the placeholder with the video itself.
 
-One or zero immediate child nodes can have the `fallback` attribute. If present, this node and its children form the content that will be displayed if HTML5 video is not supported on the user’s browser.
+ - One or zero immediate child nodes can have the `fallback` attribute. If present, this node and its children form the content that is displayed if HTML5 video is not supported in the user’s browser.
 
 For example:
+
 ```html
 <amp-video width=400 height=300 src="https://yourhost.com/videos/myvideo.mp4"
     poster="myvideo-poster.jpg">
@@ -44,31 +45,30 @@ For example:
 </amp-video>
 ```
 
-#### Attributes
+### Attributes
 
 **src**
 
-Required if no <source> children are present. Must be HTTPS.
+Required if no `<source>` children are present. Must be HTTPS.
 
 **poster**
 
-The image for the frame to be displayed before video playback has started. By
-default the first frame is displayed.
+The image for the frame to be displayed before video playback has started. The first frame is displayed by default.
 
 **autoplay**
 
-The `autoplay` attribute allows the author to specify when - if ever - the animated image will autoplay.
+The `autoplay` attribute allows the author to specify when, if ever, the animated image will autoplay.
 
-The presence of the attribute alone implies that the animated image will always autoplay. The author may specify values to limit when the animations will autoplay. Allowable values are `desktop`, `tablet`, or `mobile`, with multiple values separated by a space. The runtime makes a best-guess approximation to the device type to apply this value.
+The presence of the attribute alone implies that the animated image always autoplays. The author may specify values to limit when the animations autoplay. Allowable values are `desktop`, `tablet`, or `mobile`, with multiple values separated by a space. The runtime makes a best-guess approximation to the device type to apply this value.
 
 **controls**
 
-Similar to the `video` tag `controls` attribute - if present, the browser offers controls to allow the user to control video playback.
+Similar to the `video` tag `controls` attribute. If present, the browser offers controls to allow the user to control video playback.
 
 **loop**
 
-If present, will automatically loop the video back to the start upon reaching the end.
+If present, automatically loops the video back to the start upon reaching the end.
 
 **muted**
 
-If present, will mute the audio by default.
+If present, mutes the audio by default.