First You Must Have  A Dailymotion Account With Email Confirmation
Video Upload Must From Youtube you Can use Keepvid.com Copy Download Addres From Keepvid

Goto http://www.dailymotion.com/settings/developer
Create a new API key
Copy the API key


Goto : http://dm-remote-uploader.appspot.com/ Or
           https://bestcoder.me/dm/#

Click GET ACCESS TOKEN
Enter the api key

Enter your credentials
Enter the URL :  From Keepvid.com Copy Link Download From Youtube
Enter title of the video : xxxxxxxxxx
Enter tags : xxxxxxxxxxx
Enter the channel ( e.g. videogames ) : xxxxxxx
Enter your access token : xxxxxxxxx
GO

If an Error occurred Go to API Key Dailymotion Change URL Link You Use Example :

http://dm-remote-uploader.appspot.com Or
https://bestcoder.me/dm/