Blender 2.8 Eevee Transparent Background Output Using Eevee on 2.8 to create some VFX, however, all the video renders I output still have a black background and not transparent. I have selected Alpha channel to be "transparent" to no avail! 

Can someone please help! 

Many thanks,

Andrew
Firstly,  Render an Png or Tiff Image sequences which supports RGB + alpha  instead of Video. 
Secondly,  To enable transperancy go to Render Settings in the properties panel and under Film go to alpha and select Transperant from the drop down.