Is there a limit on Facebook for the duration of my video?

Facebook has a 1.75 GB file size limit and the video must be under 45 minutes. If your uploaded file-size is below 1.75 GB but the video duration is longer than 45 minutes, you won't be able to publish the video to Facebook.  If your video duration is below 45 minutes but your file exceeds 1.75 GB, Lightcast will automatically use a lower video quality under 1.75 GB to publish your video to Facebook.