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Convert Xunlei XV media file to FLV media file. Origin: http://hi.baidu.com/naylonslain/item/9586125a9f5979dbd58bac47
#include <stdio.h>
#include <stdlib.h>
int convert_file(char *szSourceFile, int bIsFastConv)
{
char szNewFileName[256] = {0};
int buffer[0x400];
int i;
char flag;
char data;
if (bIsFastConv) { // 一秒转换模式
FILE *fp = fopen(szSourceFile, "rb+");
if (!fp) {
printf("未找到文件.\n\n");
return 0;
}
fseek(fp, 0x200000, 0);
for (i = 0; i < 0x400; i++) {
buffer[i] = fgetc(fp);
}
flag = 0x4C - (char)buffer[1];
if (flag + (char)buffer[2] == 0x56) {
// 开始解码
fseek(fp, 0x200000, 0);
fputc(0x46, fp);
for (i = 0; i < 3; i++) {
data = (char)buffer[1 + i] + flag;
fputc(data, fp);
}
for (i = 0; i < 0x3FC; i++) {
data = (char)buffer[4 + i] + flag;
fputc(data, fp);
}
fseek(fp, 0x20000A, 0);
fputc(32, fp);
// 修正文件头
fseek(fp, 0, 0);
fputc(70, fp);
fputc(76, fp);
fputc(86, fp);
fputc(1, fp);
fputc(5, fp);
fputc(0, fp);
fputc(0, fp);
fputc(0, fp);
fputc(9, fp);
fputc(0, fp);
fputc(0, fp);
fputc(0, fp);
fputc(0, fp);
fputc(255, fp);
fputc(31, fp);
fputc(255, fp);
fputc(241, fp);
fclose(fp);
sprintf(&szNewFileName[0], "%s.flv", szSourceFile);
rename(szSourceFile, &szNewFileName[0]);
printf("转换完成.\n输出文件: %s\n\n", szNewFileName);
} else {
printf("文件格式不正确.\n\n");
return 0;
}
} /*else { // 常规模式(未完成)
}*/
return 1;
}
int main(int argc, char **argv)
{
char szFileName[256] = {0};
printf("迅雷XV格式转换器 XVE7s 秒速转换逆向版本\n Code by Naylon\n http://hi.baidu.com/naylonslain");
if (argc > 1) {
convert_file(argv[1], 1);
} else {
// Test Input: "D:\Downloads\000.xv"
while (1) {
scanf("%s", &szFileName[0]);
convert_file(szFileName, 1);
memset(&szFileName[0], 0, 256);
}
}
return 0;
}
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