ffmpeg: Bump revision and depend on libopus

packages/ffmpeg/build.sh

@@ -1,11 +1,12 @@
 TERMUX_PKG_HOMEPAGE=https://www.ffmpeg.org/
 TERMUX_PKG_DESCRIPTION="Tools and libraries to manipulate a wide range of multimedia formats and protocols"
 TERMUX_PKG_VERSION=3.1.3
+TERMUX_PKG_BUILD_REVISION=1
 TERMUX_PKG_SRCURL=https://www.ffmpeg.org/releases/ffmpeg-${TERMUX_PKG_VERSION}.tar.xz
 TERMUX_PKG_SHA256=f8575c071e2a64437aeb70c8c030b385cddbe0b5cde20c9b18a6def840128822
 TERMUX_PKG_FOLDERNAME=ffmpeg-$TERMUX_PKG_VERSION
 # libbz2 is used by matroska decoder:
-TERMUX_PKG_DEPENDS="openssl, libbz2, libx264, xvidcore, libvorbis, libmp3lame, liblzma"
+TERMUX_PKG_DEPENDS="openssl, libbz2, libx264, xvidcore, libvorbis, libmp3lame, liblzma, libopus"
 TERMUX_PKG_INCLUDE_IN_DEVPACKAGE="share/ffmpeg/examples"
 TERMUX_PKG_CONFLICTS="libav"
 
@@ -37,7 +38,7 @@ termux_step_configure () {
 		--disable-avdevice \
 		--disable-ffserver \
 		--disable-static \
-                --disable-symver \
+		--disable-symver \
 		--enable-cross-compile \
 		--enable-gpl \
 		--enable-libmp3lame \