Hi, I just went through the original ticket to get the blog image on the stream to be larger see ticket #31396.
This is what Nik said at the time:
I've added new size for your image: 'easysocial' which you can see the size setting in Easyblog>Themes>Vintage>Blog Images, there you can set the height of the image, save it and click on the Clean Images button. So, you can use this $blog->getImage()->getSource('easysocial'); to get the image in Easysocial stream.
I also checked and we had all files still sitting in our overrides. However, I can not find the above settings in the new EB5. This is why it was not not working anymore.
We originally had all images and video display in the stream at full width and max 320px height (can be 550px). We like this so that it is consistent and a Facebook kind of look and feel....
Would really appreciate your help on this.