[rpms/ffmpeg] rawhide: bump release and add missing changelog entries

[Dominik 'Rathann' Mierzejewski <dominik@greysector.net>]

            A new commit has been pushed.

            Repo   : rpms/ffmpeg
            Branch : rawhide
            Commit : 567905bced8b89832247b1a3965d0b4df183e3f9
            Author : Dominik 'Rathann' Mierzejewski <dominik@greysector.net>
            Date   : 2026-07-30T16:37:18+02:00
            Stats  : +5/-1 in 1 file(s)
            URL    : https://src.fedoraproject.org/rpms/ffmpeg/c/567905bced8b89832247b1a3965d0b4df183e3f9?branch=rawhide

            Log:
            bump release and add missing changelog entries

NOTE to self: this package is not using rpmautospec

---
diff --git a/ffmpeg.spec b/ffmpeg.spec
index da6dc2f..0c3680d 100644
--- a/ffmpeg.spec
+++ b/ffmpeg.spec
@@ -108,7 +108,7 @@ Name:           ffmpeg
 %global pkg_name %{name}%{?pkg_suffix}
 
 Version:        8.1.2
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        A complete solution to record, convert and stream audio and video
 License:        GPL-3.0-or-later
 URL:            https://ffmpeg.org/
@@ -987,6 +987,10 @@ rm -rf %{buildroot}%{_datadir}
 
 
 %changelog
+* Thu Jul 30 2026 Dominik Mierzejewski <dominik@greysector.net> - 8.1.2-4
+- enable DeckLink support
+- fix Firefox vulkan direct-export rendering issue
+
 * Wed Jul 15 2026 Fedora Release Engineering <releng@fedoraproject.org> - 8.1.2-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild