In my contact with support (on May 12, 2019) I was informed that the maximum video file size that Textra will resize (down to the 1MB maximum for most people's phones) is 10MB. Any file larger than 10MB, Textra won't deal with. The built-in "Messages" app (on my Android phone) once resized a 29MB video file for me. I don't know if their limit is 30MB, or 50MB, or 100MB. But it would make sense to increase your limit to at least 30MB to match your competition.