How can I embed a video from Twitter so that users can watch directly in the post?
Did you try oneboxing?
Yes, it didn’t work.
Can you post an example of a tweet that doesn’t work for you? This works, for example:
Can I see the code that is embed please?
There’s no code, it’s just a single twitter link posted on its own line, the video should embed automatically
Make sure that you have a Twitter API key set up. Go through the instructions to enable Twitter login on your site.