I'm sure others will have better responses for you, as I am a novice, but the way to see the best quality of your footage is watching it directly from the SD card. So what you can do, which I did, is buy a USB stick that has an SD card slot in it, that way you can insert the SD card from the Spark into the USB stick, and then insert the USB stick into your computer and watch and save the file. Watching on your phone or wherever else has a lower quality video file that has that choppyness to it, at least that's how it was for me, so I read up on it and found the solution that I shared above. Good luck!
Yes I just loaded the file onto the Mac and played it back on iMovie and it is much better, no blurry focus, so I guess the playback from the SD card on the phone was the problem.
Thank you all for helping out.