Update opencv dependency

ffmpeg have just added support for opencv4[1] in the git master
branch. Added the patch here, so now opencv2 dependency from the
AUR can be dropped, and we can use the opencv package from the
official repositories while opencv5 is not yet released.

[1] https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/c4ce51ee62205c74604767f1b7dab6a036edac7f

.SRCINFO

@@ -1,7 +1,7 @@
 pkgbase = ffmpeg-full
 	pkgdesc = Complete solution to record, convert and stream audio and video (all possible features including libfdk-aac)
 	pkgver = 8.0
-	pkgrel = 3
+	pkgrel = 4
 	url = https://ffmpeg.org/
 	arch = x86_64
 	license = LicenseRef-nonfree-and-unredistributable
@@ -94,7 +94,7 @@ pkgbase = ffmpeg-full
 	depends = openal
 	depends = openapv
 	depends = opencore-amr
-	depends = opencv2
+	depends = opencv
 	depends = openh264
 	depends = openjpeg2
 	depends = openvino
@@ -162,6 +162,7 @@ pkgbase = ffmpeg-full
 	source = 070-ffmpeg-lcevcdec4.0.0-fix.patch::https://git.ffmpeg.org/gitweb/ffmpeg.git/patch/fa23202cc7baab899894e8d22d82851a84967848
 	source = 080-ffmpeg-cuda13-fix.patch::https://git.ffmpeg.org/gitweb/ffmpeg.git/patch/f8a300c6739ea2ca648579d7faf3ae9811b9f19a
 	source = 090-ffmpeg-glslang16-fix.patch::https://git.ffmpeg.org/gitweb/ffmpeg.git/patch/f1e9032a2000b8b885cffd6fed8eacd47b37673f
+	source = 100-ffmpeg-add-opencv4-support.patch::https://git.ffmpeg.org/gitweb/ffmpeg.git/patch/c4ce51ee62205c74604767f1b7dab6a036edac7f
 	source = LICENSE
 	validpgpkeys = FCF986EA15E6E293A5644F10B4322F04D67658D8
 	sha256sums = b2751fccb6cc4c77708113cd78b561059b6fa904b24162fa0be2d60273d27b8e
@@ -178,6 +179,7 @@ pkgbase = ffmpeg-full
 	sha256sums = d2bacb3a5b0201503554c3394ea1f3fbc8ad79d5c2721e0c226134d40812ad08
 	sha256sums = 79e3fbc30c86e0db789af78e79dc23227e5f6887531bcd52b2defa8526d1455b
 	sha256sums = 0010bf826a7008452ccc8a072b0186688e8687be0dbe2be2ca7540e26ca076f1
+	sha256sums = f5b448f7e6e567273f74ed6e62ed25d8470f6bc9183c247993f1c03e78b57587
 	sha256sums = 04a7176400907fd7db0d69116b99de49e582a6e176b3bfb36a03e50a4cb26a36
 
 pkgname = ffmpeg-full

PKGBUILD

@@ -3,7 +3,7 @@
 
 pkgname=ffmpeg-full
 pkgver=8.0
-pkgrel=3
+pkgrel=4
 _svt_hevc_ver='ed80959ebb5586aa7763c91a397d44be1798587c'
 _obs_studio_ver='32.0.2'
 _whispercpp_ver='1.8.2'
@@ -88,7 +88,7 @@ depends=(
     'openal'
     'openapv'
     'opencore-amr'
-    'opencv2'
+    'opencv'
     'openh264'
     'openjpeg2'
     'openvino'
@@ -171,6 +171,7 @@ source=("https://ffmpeg.org/releases/ffmpeg-${pkgver}.tar.xz"{,.asc}
         '070-ffmpeg-lcevcdec4.0.0-fix.patch'::'https://git.ffmpeg.org/gitweb/ffmpeg.git/patch/fa23202cc7baab899894e8d22d82851a84967848'
         '080-ffmpeg-cuda13-fix.patch'::'https://git.ffmpeg.org/gitweb/ffmpeg.git/patch/f8a300c6739ea2ca648579d7faf3ae9811b9f19a'
         '090-ffmpeg-glslang16-fix.patch'::'https://git.ffmpeg.org/gitweb/ffmpeg.git/patch/f1e9032a2000b8b885cffd6fed8eacd47b37673f'
+        '100-ffmpeg-add-opencv4-support.patch'::'https://git.ffmpeg.org/gitweb/ffmpeg.git/patch/c4ce51ee62205c74604767f1b7dab6a036edac7f'
         'LICENSE')
 sha256sums=('b2751fccb6cc4c77708113cd78b561059b6fa904b24162fa0be2d60273d27b8e'
             'SKIP'
@@ -186,6 +187,7 @@ sha256sums=('b2751fccb6cc4c77708113cd78b561059b6fa904b24162fa0be2d60273d27b8e'
             'd2bacb3a5b0201503554c3394ea1f3fbc8ad79d5c2721e0c226134d40812ad08'
             '79e3fbc30c86e0db789af78e79dc23227e5f6887531bcd52b2defa8526d1455b'
             '0010bf826a7008452ccc8a072b0186688e8687be0dbe2be2ca7540e26ca076f1'
+            'f5b448f7e6e567273f74ed6e62ed25d8470f6bc9183c247993f1c03e78b57587'
             '04a7176400907fd7db0d69116b99de49e582a6e176b3bfb36a03e50a4cb26a36')
 validpgpkeys=('FCF986EA15E6E293A5644F10B4322F04D67658D8')
 
@@ -200,6 +202,7 @@ prepare() {
     patch -d "ffmpeg-${pkgver}" -Np1 -i "${srcdir}/070-ffmpeg-lcevcdec4.0.0-fix.patch"
     patch -d "ffmpeg-${pkgver}" -Np1 -i "${srcdir}/080-ffmpeg-cuda13-fix.patch"
     patch -d "ffmpeg-${pkgver}" -Np1 -i "${srcdir}/090-ffmpeg-glslang16-fix.patch"
+    patch -d "ffmpeg-${pkgver}" -Np1 -i "${srcdir}/100-ffmpeg-add-opencv4-support.patch"
 }
 
 build() {