mpv: rebuild due to ffmpeg version bump

While I'm here:
- add vapoursynth build option (off)
- license is GPL-2 (they switched back to GPL-2 some time ago)

common/options.description

@@ -75,6 +75,7 @@ desc_option_upower="Enable support for UPower"
 desc_option_usb="Enable support for USB"
 desc_option_v4l2="Enable support for V4L2 (Video 4 Linux 2)"
 desc_option_vaapi="Enable support for VA-API"
+desc_option_vapoursynth="Enable support for VapourSynth"
 desc_option_vdpau="Enable support for VDPAU"
 desc_option_wavpack="Enable support for the Wavpack audio format"
 desc_option_wayland="Enable support for the Wayland backend"

srcpkgs/mpv/template

@@ -1,15 +1,16 @@
 # Template file for 'mpv'
 pkgname=mpv
 version=0.21.0
-revision=1
+revision=2
+build_options="vapoursynth"
 short_desc="Video player based on MPlayer/mplayer2"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
-license="GPL-3"
+license="GPL-2"
-homepage="http://mpv.io"
+homepage="https://mpv.io"
 build_style=waf
 configure_args="--confdir=/etc/mpv --docdir=/usr/share/examples/mpv
  --enable-cdda --enable-libmpv-shared --disable-oss-audio --disable-sdl2
- --enable-vapoursynth"
+ $(vopt_enable vapoursynth)"
 hostmakedepends="pkg-config python-docutils perl"
 makedepends="
  ffmpeg-devel libass-devel lcms2-devel libXinerama-devel lua52-devel v4l-utils-devel
@@ -17,8 +18,8 @@ makedepends="
  pulseaudio-devel libbluray-devel libcdio-paranoia-devel libdvdread-devel
  MesaLib-devel harfbuzz-devel libXScrnSaver-devel jack-devel libdvdnav-devel
  wayland-devel libuuid-devel libguess-devel libXrandr-devel samba-devel
- rubberband-devel vapoursynth-devel zimg-devel python3-devel"
+ rubberband-devel $(vopt_if vapoursynth 'vapoursynth-devel zimg-devel python3-devel')"
-depends="desktop-file-utils hicolor-icon-theme youtube-dl vapoursynth-mvtools"
+depends="desktop-file-utils hicolor-icon-theme youtube-dl $(vopt_if vapoursynth vapoursynth-mvtools)"
 distfiles="https://github.com/mpv-player/${pkgname}/archive/v${version}.tar.gz"
 checksum=d05f8ece859c500ef1649cdfea911ec1529df1898b8fda3e217766dc28dc9bd3