Media Settings : The Features Module : Allow Comments on All Media
  
Allow Comments on All Media
Comments provide a means for your users to leave interactive feedback on content that has been added to the system. Only Account Admins and Media Admins are able to enable and disable comments.
 
*To enable comments:
1. Navigate to Admin > Media Settings > Features.
2. Select Allow comments on all media checkbox.
 
Keep in mind:
The Comment field allows a maximum of 1000 characters.
Each comment will have the User’s Name and Date noted.
When a user leaves a comment, the video owner will receive an email notification of the comment noting the commenter’s name, date and time of the comment, and the comment itself along with a link to it.
Other users may reply to the original comment to create nested comments.
Only one level of nested comments will be created.
Replies on the second level of comments will be a reply to the original comment.
Email notifications are included for nested comments.
Users may delete their own comments.
Account Admins and Media Admins may also delete comments.
If a comment is deleted, it is replaced with placeholder text: “This comment has been removed.”.
Once comments have been enabled globally, the Enable Comments checkbox appears on the Video Settings page which will allow comments to be enabled or disabled for specific videos.
If this setting is disabled, the Enable Comments checkbox will no longer appear on individual videos nor will it appear in the Bulk Edit interface.
 
*See Also:
Comment on a Video
Enable or Disable Comments for an Individual Video
Bulk Editing Video Comments Setting