I was updating the front page of my blog with some widgets when I discovered that YouTube does not readily give you an embed action for the Upload or Popular uploads playlists. It only seems to have that options for your created playlists. As you can see below there is no listing for Uploads.
The List menu will give you a share link :
When you click share on the playlist you will get the following code :
<iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/videoseries?list=PLKu6sJRZwZPPmQ7wsYCoGbbURmbobCpwH" frameborder="0" allowfullscreen></iframe>
This can be used in a website to show a playlist in a nice iframe :
Here is how to get that to work with Uploads or Popular Uploads :
Click on the Play Button that appears next to the Upload label in the channel widget:
Click on the Uploads Link on the top right.
Now you have a Share button with which you can get the embed link :
Things are a little different with Popular Uploads. YouTube will not provide a hyperlink at the top of the list, but you can still get the list ID. Click the Play Button next to the Popular Uploads list and then check the URL of any video in the list. The end of the URL will contain list=xxxxxxxxxxx. Use this list ID to populate the code snippet.
It is possible to use either list ID from another user in order to host their list on your page.
Clicking this link will then provide a page with a share link on it.