Well if you want more powerful cpu with less cores(4) go with Intel Core i5-4590 - 186$ on partpicker at that moment
If you need more cores(8) go with AMD FX-8370 - 190$ but you will have to spend more cash on cpu cooler though. Maybe going with 8350 with a cooler might fit in the budged.
And maybe 3rd option would be Intel Xeon E3-1220 V3 - 192$. It would be more powerful than the i5 4590 for video editing. Personaly I would go with this one of the 3.
Well if you want more powerful cpu with less cores(4) go with Intel Core i5-4590 - 186$ on partpicker at that moment
If you need more cores(8) go with AMD FX-8370 - 190$ but you will have to spend more cash on cpu cooler though. Maybe going with 8350 with a cooler might fit in the budged.
And maybe 3rd option would be Intel Xeon E3-1220 V3 - 192$. It would be more powerful than the i5 4590 for video editing. Personaly I would go with this one of the 3.
FX-8350, or A10-7850K if you were planning on using iGPU. Thing is, the i3s will probably slow you down as they are dual-core and the good quad-core i5s are a bit too expensive.