#include <iostream>
#include <string>
#include <string_view>
#include <random>

std::string gen_password(std::string_view svMask, int64_t i64Size) {
    std::random_device rd;
    std::mt19937_64 mt64(rd());
    if (svMask.empty()) {
        std::cout << "Error: mask empty!!\n";
        return "mask_value_error";
    } else if (i64Size <= 0) {
        std::cout << "Error: password size <= 0;\n";
        return "size_null_error";
    } else {
        std::string sOutput = "";
        sOutput.reserve(i64Size);
        std::uniform_int_distribution<size_t> dist(0, svMask.size() - 1);

        for (int64_t ch = 0; ch < i64Size; ch++) {
            int64_t i64Random = dist(mt64);
            sOutput += svMask[i64Random];
        }
        return sOutput;
    }
}

int main(){
    std::string mask_hash = gen_password("qwertyuiop[]asdfghjkl;'zxcvbnm,./1234567890-=QWERTYUIOP[]ASDFGHJKL;'ZXCVBNM,.",64);
    int64_t i64SizePassword = 64;
    std::cout <<" Size Password:";
    std::cin >> i64SizePassword;
    std::cout << gen_password(mask_hash,i64SizePassword);
}

std::vector values<int> values = {4,6,10,78,20,8}

std::erase_if(values, [](int number) {
    return number >= 10;
});

ffmpeg -i "video.mp4" -c:v hevc_amf "output.mp4"

ffmpeg -i "video.mp4" -c:v hevc_nvenc "output.mp4"

ffmpeg -i "video.mp4" -c:v hevc_qsv "output.mp4"