|Upload a file from your computer|
|Search a video on YouTube, then add it|
|Chose one of your YouTube videos|
For legal reasons you can rule out the first and last option. So what remains is option 2: you need to search for the video by its Japanese description.
Even if you overcome the initial hurdle and manage to enter (or copy and paste) the title you are still in trouble: in this particular case you are presented with a lot videos that match the search term, all carrying descriptions in Japanese:
Do you understand Japanese?
|Search for full URL|
|Search for video ID only|