We should update to OpenH264 2.3.1. The only difference is a new ABI version. OpenH264 contained an illegal ABI change without an ABI version bump, so 2.3.1 bumps the ABI version. Applications compiled for older versions of OpenH264 will crash if run against 2.3.0; the update to 2.3.1 should cause applications to either not start at all if linked directly (which shouldn't happen in Fedora), or else have a chance to handle the mismatch properly if using dlopen() (which is how Fedora packages must use OpenH264).
OK, builds are done and the releng request is in: https://pagure.io/releng/issue/11059 I think we need to push the soname bump to all of the same releases that got 2.3.0, which includes the stable F36 release. This is going to take some coordination with ffmpeg that dlopens openh264, but I think it should be doable without another major fallout.
This is all done now.