YouTube has a very good Closed Caption recognition.  You just have to enable it for any video you create.

If you want to go a step further, you can force your video to show CC by a few small steps.

• First Enable CC by going to YouTube Creator Studio
• Make a small edit on the CC to “own it”
• Then add a tag in your Info and Settings tab to include yt:cc=on

Here is a video walkthrough of doing this!