feat: add convert.c

CMakeLists.txt

@@ -1,6 +1,7 @@
 cmake_minimum_required(VERSION 3.21)
 
 project(MediaPlayer)
+project(convert)
 
 set(CMAKE_C_STANDARD 17)
 set(CMAKE_BUILD_TYPE Debug)
@@ -43,6 +44,8 @@ set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} /NODEFAULTLIB:MSVCRT
 
 add_library(MediaPlayer SHARED ${SRC_FILES_DIR})
 
+add_executable(convert ${PROJECT_SOURCE_DIR}/tools/convert.c)
+
 set_target_properties(MediaPlayer PROPERTIES OUTPUT_NAME "MediaPlayer")
 
 target_link_libraries(MediaPlayer 

tools/convert.c

@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(void)
+{
+    int width, height, rate;
+    char cmd[256];
+
+    printf("Height(7): ");
+    scanf("%d", &height);
+
+    printf("Width(4): ");
+    scanf("%d", &width);
+
+    printf("Rate(1000): ");
+    scanf("%d", &rate);
+
+    int x = width * 128;
+    int y = height * 128;
+
+    system("mkdir output");
+    remove("output.mp4");
+    snprintf(cmd, sizeof(cmd), "ffmpeg.exe -i input.mp4 -r 20 -vf scale=%d:%d -b:v %dk -c:v libx264 -preset medium -c:a aac output.mp4", x, y, rate);
+    system(cmd);
+
+    snprintf(cmd, sizeof(cmd), "ffmpeg.exe -i output.mp4 -vf fps=20,scale=%d:%d:flags=lanczos,pad=%d:%d:(ow-iw)/2:(oh-ih)/2:color=black,format=rgba output/%%09d.png", x, y, x, y);
+    system(cmd);
+    system("pause");
+
+    return 0;
+}