[Coral-List] Request for information on benthic cover software

[Ruth Thurstan]

Dear Coral-list 
  
I have recently completed a number of video transects of benthic communities. I would like to get hold of some software that allows me to take frame-grabs from the video so I can estimate percentage cover etc. 
  
Does anyone have any advice as to what software is available and where I could get it from? I have had a look around but most software seems to deal with single images rather than a video. 
  
Any help you could offer would be greatly appreciated! 
  
Many thanks 
  
Ruth Thurstan