iPhone Video almost impossible to send.

I have an iPhone 6. Until one week ago, I could take video for at least two minutes and send it via text or email as long as I was on a wi-fi service. All of a sudden, I am unable to send even 30 seconds of video because the files are suddenly too big. Not sure why - any help here? This is the same for the videos once they are donwloaded on the mac (el capitan).They are gigantic to send - never happened before.

Bob