Light In The Sky Over Loch Lomond

A video of a strange light in the skies Near Loch lomond was uploaded to youtube a week ago and it seems it has caused a little stir online. Tom Hall who captured the video said he dosnt belevie it to be a plan, helicopter or chinesse lantern, he went on to say the object didnt make any sound.
 A lot of people on line are suggestion it might be the planet Venus but as my knowledge of the stars is relatively limited I couldnt really comment with any certainty. I do know that Venus dose sit low in the sky at certain times of the year and is often misstaken for a UFO.

What do you guys think?