I am not super deep into parsers, so I cannot give feedback on the content too much.
The introduction about what the project is was nice, but was missing a quick note about what you will show in the video and why.
The jump into discussing the parser with an example was a bit too abrupt for me, but again, I am not working in that field and didn't take the time to understand it :)

In the end, it depends on for who you are making the video.

Even though I didn't watch the whole thing, I hope this helps a little.