1. In the right sidebar, click on the video you want to see.

2. Click on the CC icon   to underline it.

3. Click on the Gear icon. 

4. Scroll to Subtitles/CC and click on the arrow >.

5. Scroll to Auto-translate and click on it.

6. Scroll to the language you want and click on it.

7. Video will now play with subtitles in the language you chose.