Nope cannot fix that: even numbers only.
MPEG media works best when the dimensions are evenly divisible by 8.
312 x 304 makes the most sense. Use that.
No offense guys, I don't know who's on what right now, but I need 315 by 300.. it can not be something else.. it is an Ad space on PH's main page : "Top Right Square".
It's like you would tell me that on some Words Document, we can type only single dots & tripple dots, and that double dots are not possibe.. it just doesn't make sense!
So if there is anyone who know something, I would really appreciate a wiser answer.
Thanks for your time =)
So i just found out the solution.
Video ads are 314x300
Png overlays are 315x300
Which explains that weird final format if someone would wondered