I've seen the green bar from previous analog to digital captures, I think it's a VCR tracking issue. In the event you cannot get rid of it...Google the problem and see what pops up.
Also, you can just live with the capture as is, and re-size the media in the preview window to "crop" out the offending region.
HP Envy Phoenix/4thGen i7-4770(4@3.4GHz~turbo>3.9)
Nvidia GTX 960(4GB)/16GB DDR3/
Canon Vixia HV30/HF-M40/HF-M41/HF-G20/Olympus E-PL5.
Tape capture using 6 VCR, TBC-1000, Elite BVP4+, Sony D8 camcorder with TBC.
https://www.facebook.com/BarryAFTT