Accepting request 955956 from home:Pharaoh_Atem:branches:multimedia:libs

- Add patch to fix error returned with bad versions of OpenH264
  + Patch: ffmpeg-openh264-averr-on-bad-version.patch
- Enable OpenH264 as an H.264 codec via dlopen using patch from Fedora
  + Patch: ffmpeg-dlopen-openh264.patch
- Add source and script for headers for dlopening OpenH264
  + Source: ffmpeg-dlopen-headers.tar.xz
  + Source: ffmpeg_get_dlopen_headers.sh

OBS-URL: https://build.opensuse.org/request/show/955956
OBS-URL: https://build.opensuse.org/package/show/multimedia:libs/ffmpeg-5?expand=0&rev=7

ffmpeg-5.spec

@@ -98,11 +98,13 @@ URL:            https://ffmpeg.org/
 
 #Freshcode-URL:    http://freshcode.club/projects/ffmpeg
 #Git-Clone:     git://source.ffmpeg.org/ffmpeg
-Source:         https://www.ffmpeg.org/releases/%_name-%version.tar.xz
+Source0:        https://www.ffmpeg.org/releases/%_name-%version.tar.xz
+Source1:        ffmpeg-dlopen-headers.tar.xz
 Source2:        https://www.ffmpeg.org/releases/%_name-%version.tar.xz.asc
 Source3:        %name-rpmlintrc
 Source4:        enable_decoders
 Source5:        enable_encoders
+Source92:       ffmpeg_get_dlopen_headers.sh
 Source98:       http://ffmpeg.org/ffmpeg-devel.asc#/ffmpeg-5.keyring
 Source99:       baselibs.conf
 Patch1:         ffmpeg-arm6l.diff
@@ -112,6 +114,8 @@ Patch4:         ffmpeg-4.2-dlopen-fdk_aac.patch
 Patch8:         vmaf-trim-usr-local.patch
 Patch9:         ffmpeg-4.4-CVE-2020-22046.patch
 Patch10:        ffmpeg-chromium.patch
+Patch11:        ffmpeg-openh264-averr-on-bad-version.patch
+Patch91:        ffmpeg-dlopen-openh264.patch
 BuildRequires:  ladspa-devel
 BuildRequires:  libgsm-devel
 BuildRequires:  libmp3lame-devel
@@ -545,7 +549,7 @@ from libav should depend on these private headers which are expected to
 break compatibility without any notice.
 
 %prep
-%autosetup -p1 -n %_name-%version
+%autosetup -a1 -p1 -n %{_name}-%{version}
 
 %build
 %ifarch %ix86 %arm
@@ -616,6 +620,7 @@ LDFLAGS="%_lto_cflags" \
 %if %{with openmpt}
 	--enable-libopenmpt \
 %endif
+	--enable-libopenh264-dlopen \
 	--enable-libopus \
 	--enable-libpulse \
 %if %{with librav1e}