The standard Dynamo Player size is based on a 16:9 video aspect ratio, with an extra 60 pixels for controls and features. Any embed code for the player can be adjusted by changing the height and width parameters with these numbers in mind (see code sample below). For instance, common conversions are: 

With a video size of 560 x 305, you'll want a player size of 560 x 335.

With a video size of 640 x 360, you'll want a player size of 640 x 390.

<object width="560" height="335"><param name="movie" value="player.swf"><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><param name="wmode" value="opaque"></param><param name="quality" value="high"></param><embed src="https://player.dynamoplayer.com/player//player.swf?pid=XXXXXexample..."  type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true"  wmode="opaque"  allowfullscreen="true"  quality="high"  width="560"  height="335"> </embed> </object>