init

README.md

@@ -1,2 +1,43 @@
 # ffmpeg_prebuilts
 ffmpeg prebuilt libraries used in Bambu Studio
+
+1. Install visual studio 2022; 
+
+2. Insatll msys2: https://repo.msys2.org/distrib/msys2-x86_64-latest.exe; 
+
+3. Modify the "MYSYS2_PATH/mysys2.shell.cmd" file "rem set MSYS2_PATH_TYPE=inherit" to "set MSYS2_PATH_TYPE=inherit"; 
+
+4. Start "X64 Native Tools Command Prompt for VS 2022" and run "MYSYS2_PATH/mysys2.shell.cmd"; 
+
+5. Install pacman tools "pacman -S diffutils make pkg-config yasm" in mysys2 window; 
+
+6. Download ffmpeg source 7.0.2: https://codeload.github.com/FFmpeg/FFmpeg/zip/refs/tags/n7.0.2
+
+7. cd ffmpeg sourece directory in mysys2 shell; 
+
+8. Run command
+```
+./configure --toolchain=msvc \
+--prefix=./dist \
+--enable-gpl \
+--enable-nonfree \
+--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
+```
+
+9. Run "make && make install";