I am not with Laminar Research; just a flight simmer.
The way I interpret what you want to attach is a file (format???) in the same manner as if you are attaching the log.txt file.
Have a look at the following link on how to attach the log.txt file and perform the same task for your video file. The link can be found at http://questions.x-plane.com/16206/how-to-insert-a-file-in-a-question
I would also suggest attaching the log.txt file as well on the off-chance somebody with a greater knowledge base than me can "spot" your problem.
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