VideoJS 4.11.1 - VAST plugin 0.1.2 does not work correctly with commercials in flv format. Where do I need to correct the code in the plugin?

Question

Internet advertising

Video JS 4.11.1
VAST plugin 0.1.2
In a pre-roll with a commercial in flv format, the commercial is launched again, which replaces the main video, that is, the main video is not played after the pre-roll.
If you click on the skip ads button, the commercial is loaded again and the situation repeats without playing the main video.
The VAST file only contains flv videos!
If there are copies of the commercial in the VAST file, for example in .mp4, then everything works out well (by default, the video is loaded in .mp4).
The bottom line is that the advertising platform gives the VAST file only with flv videos, so I ask the community for help!
Thanks for the early!