This plugin provides both Widget and Shortcode to show latest videos from any public Youtube channel.
To activate the widget: 3. Go to 'Widgets' menu and drag and drop 'Auto Last Youtube Video' widget to your prefered sidebar 4. Configure the widget: fill in the title, channel name and anchor text and select the number of video to show 5. Click on "Save"
To use the shortcode: 6. When editing a page or a post, add the code [auto_last_youtube_video user='channel_name' width='450' height='320'][/auto_last_youtube_video] to show the last video from that channel. You can also configure width and height.