Hey! Thanks for rating the addon, I'm glad you're enjoying it. I don't use any conversion for equirectangular to plane, equirectangular footage just gets put on a spherical skybox so that's really easy. EAC (Equi angular cubemap) on the other hand is a proprietary Youtube format and as you noticed my formula doesn't quite work. This is my formula, which is awful: gl_FragColor = texture2D(src, vec2((2.0/pi*atan((vUV.x-0.5)*2.0)+0.5)/3.0+1.0/3.0, (2.0/pi*atan((vUV.y-0.5)*2.0)+0.5)/2.0+0.5)); It's based on the formula in this article: https://blog.google/products/google-vr/bringing-pixels-front-and-center-vr-video/ just before the end of the article. I did just find something called video-js that apparently has good support for EAC, when I have time, I'll see if I can utilize their formula or their player.

1:10 AM
Thursday, October 22, 2020
Coordinated Universal Time (UTC)
Hello again, sorry for the 8 month late reply. I just released a new version of this addon, 0.3.2, that now uses videojs-vr in the backend, an open source VR video player that can be found here https://github.com/videojs/videojs-vr
Videojs-vr seems to have about the same level of support for EAC as this addon used to, I don't find the lines any more or less noticeable. However, I thought I'd update you on this since you expressed interest in improving the algorithm. In case you're still interested, this commit (https://github.com/videojs/videojs-vr/pull/179/files) shows the location of the EAC code within videojs-vr, and also gives sample EAC videos. The code for this addon can also now be found on github (https://github.com/jtank4/Youtube-VR), however now all it does is include a videojs-vr player into the page.