Comments are in the view_video.tpl

Code:
<div class="commentbox bg2">

{if $video_info.be_comment eq "yes"}

<div id="comment_block"  style="padding:1em;">

<div style="font-weight:bold;padding-bottom:5px;color: #444;padding-left:10px">Comment on this video:</div>

<form name="Add_comment" method="post" action="">
<textarea name="comment_box" ID="comment_box" rows=5 cols=45></textarea>

<input type="button" name="post" value="Post Comment" onclick="video_post_comment({$VID})">
</form>
</div> 

{/if}

</div> 

<div id="comment_post_result" class="hide" style="border: #ff9900 1px solid; margin: 0.5em 0; padding: 1em;  background-color: #ffffcc;display: none;"></div>

<div class="commentsTitle">Comments: ({$commentcount})</div>

<div id="section_comment"></div>