Add ffmepg dep

deps/CMakeLists.txt

@@ -367,6 +367,8 @@ include(libnoise/libnoise.cmake)
 
 include(Draco/Draco.cmake)
 
+include(FFMPEG/FFMPEG.cmake)
+
 
 # I *think* 1.1 is used for *just* md5 hashing?
 # 3.1 has everything in the right place, but the md5 funcs used are deprecated
@@ -448,6 +450,7 @@ set(_dep_list
     dep_libnoise
     dep_python3
     dep_wxInspector
+    dep_FFMPEG
     )
 
 if (MSVC)

deps/FFMPEG/FFMPEG.cmake

@@ -0,0 +1,79 @@
+set(_conf_cmd ./configure)
+
+if (MSVC)
+    set(_source_dir "${CMAKE_BINARY_DIR}/dep_FFMPEG-prefix/src/dep_FFMPEG")
+
+    set(PREBUILD_URL_arm64 "https://github.com/Noisyfox/FFmpeg-Builds-Orca/releases/download/autobuild-2026-07-17-14-28/ffmpeg-n7.0.3-31-g9b6ffd74b5-winarm64-orca-shared-7.0.zip")
+    set(PREBUILD_HASH_arm64 "12f4140279f2f8469885e1b5b2e8be9d788882914c21523cacd56989f3548054")
+    set(PREBUILD_URL_x64 "https://github.com/Noisyfox/FFmpeg-Builds-Orca/releases/download/autobuild-2026-07-17-14-28/ffmpeg-n7.0.3-31-g9b6ffd74b5-win64-orca-shared-7.0.zip")
+    set(PREBUILD_HASH_x64 "e65916020ddb9ef84b2666dfbcbfc9b1d67f69d15b4a66db53754637bf2d498c")
+
+    ExternalProject_Add(dep_FFMPEG
+        URL ${PREBUILD_URL_${DEPS_ARCH}}
+        URL_HASH SHA256=${PREBUILD_HASH_${DEPS_ARCH}}
+        DOWNLOAD_DIR ${DEP_DOWNLOAD_DIR}/FFMPEG
+        CONFIGURE_COMMAND ""
+        BUILD_COMMAND ""
+        INSTALL_COMMAND
+            COMMAND ${CMAKE_COMMAND} -E copy_directory  "${_source_dir}/bin" "${DESTDIR}/bin"
+            COMMAND ${CMAKE_COMMAND} -E copy_directory  "${_source_dir}/lib" "${DESTDIR}/lib"
+            COMMAND ${CMAKE_COMMAND} -E copy_directory  "${_source_dir}/include" "${DESTDIR}/include"
+    )
+
+else ()
+    if (APPLE)
+        set(_minos_cmd 
+            "CFLAGS=-mmacosx-version-min=${DEP_OSX_TARGET}"
+            "LDFLAGS=-mmacosx-version-min=${DEP_OSX_TARGET}"
+            )
+        if (IS_CROSS_COMPILE)
+            set(_cross_cmd --enable-cross-compile)
+            set(_pic_cmd --enable-pic)
+            if (${CMAKE_SYSTEM_PROCESSOR} MATCHES "x86_64")
+                set(_arch_cmd --arch=arm64)
+                set(_cc_cmd "--cc=clang -arch arm64")
+            else()
+                set(_arch_cmd --arch=x86_64)
+                set(_cc_cmd "--cc=clang -arch x86_64")
+            endif()
+        endif()
+    endif()
+
+    set(_build_j -j)
+    if(DEFINED ENV{CMAKE_BUILD_PARALLEL_LEVEL})
+        set(_build_j "-j$ENV{CMAKE_BUILD_PARALLEL_LEVEL}")
+    endif()
+
+    ExternalProject_Add(dep_FFMPEG
+        URL https://github.com/FFmpeg/FFmpeg/archive/refs/tags/n7.0.3.tar.gz
+        URL_HASH SHA256=DEEDCABE339165214A3637DF4C86A507AEF0D793CF8774FF68735F4737E8DDBC
+        DOWNLOAD_DIR ${DEP_DOWNLOAD_DIR}/FFMPEG
+        CONFIGURE_COMMAND ${_conf_cmd}
+            ${_cross_cmd}
+            ${_pic_cmd}
+            ${_arch_cmd}
+            ${_cc_cmd}
+            "--prefix=${DESTDIR}"
+            --enable-shared
+            --disable-doc
+            --enable-small
+            --disable-outdevs
+            --disable-filters
+            --enable-filter=*null*,afade,*fifo,*format,*resample,aeval,allrgb,allyuv,atempo,pan,*bars,color,*key,crop,draw*,eq*,framerate,*_qsv,*_vaapi,*v4l2*,hw*,scale,volume,test*
+            --disable-protocols
+            --enable-protocol=file,fd,pipe,rtp,udp
+            --disable-muxers
+            --enable-muxer=rtp
+            --disable-encoders
+            --disable-decoders
+            --enable-decoder=*aac*,h264*,mp3*,mjpeg,rv*
+            --disable-demuxers
+            --enable-demuxer=h264,mp3,mov
+            --disable-zlib
+            --disable-avdevice
+        BUILD_IN_SOURCE ON
+        BUILD_COMMAND make ${_build_j}
+        INSTALL_COMMAND make install
+    )
+
+endif()