Wycombe RoyalBill Oddie's Beard Surely if the video doesn't show him punching Chopra that's evidence enough?!
Unfortunately it is "guilty until proven innocent" and not the other way round.
Sadly, having defended 2 of my players in separate appeals in different leagues I concur. The line that appeals panels take is that "the referee is right - now prove he was wrong (oh, and by the way we don't care if the evidence looks good to you because we are not going to undermine our referees)". In both my appeals it was patently clear that the referee had been over-zealous and in both cases the appeal failed.
Unless you have evidence suchthat the hearing cannot possibly find in the referee's favour, you are doomed.