Sorry using AE 12.2 and Keylight 1.2.
We pretty much tried exporting in every format from adobe media encoder and tried other ones in Lightworks too.
For example, we recorded a fitness trainer talking about classes and it looked ideal in media player, when uploaded to Vimeo it looked as though we we trying to make him look bigger or that he'd been tampered with due to the lines around his arms etc.
Please see the image link, it shows the chroma key results in windows media player vs Vimeo, zoom by clicking it.
http://imagizer.imageshack.us/a/img537/9297/f6984a.png
If anyone has any suggestions in laymans terms would really appreciate it.
