There are some Facebook-imposed constraints around posting videos natively to Facebook, which include:
- Video file size should be between 1KB and 2GB
- Video file type should be either one of: 3g2, 3gp, 3gpp, asf, avi, dat, divx, dv, f4v, flv, m2ts, m4v, mkv, mod, mov, mp4, mpe, mpeg, mpeg4, mpg, mts, nsv, ogm, ogv, qt, tod, ts, vob, wmv
- Video aspect ratio must be between 9x16 and 16x9
- Video duration should be 0.1 to 40 minutes
If your video meets all of these criteria, but you are still having trouble sharing it to Facebook, please send us an email at firstname.lastname@example.org and we will look into it for you.