Try compressing your video so that it's smaller and easier to upload. You can find more information on how to compress video from YouTube or Vimeo here.
To report technical difficulties with the score submission process, send an email with your name, score and a functioning video URL to firstname.lastname@example.org before the deadline.
Subject: Technical Difficulties Submitting Score
Date: Before Score Submission Deadline
Open Workout 16.4
315 reps, Rx'd
Any emails received after the deadline will not be considered.