时间:2021-03-17 09:39:45 | 栏目:C代码 | 点击:次
0、如果路径中存在空格,用""把路径包括起来
1、使用ffmpeg命令
ffmpeg -y -framerate 10 -start_number 1 -i E:\Image\Image_%d.bmp E:\test.mp4 -y 表示输出时覆盖输出目录已存在的同名文件 -framerate 10 表示视频帧率 -start_number 1 表示图片序号从1开始 -i E:\Image\Image_%d.bmp 表示图片输入流格式
2、c++ 实现 ffmpeg命令
2.1、system方式
// 代码中执行过程中会出现黑屏的闪烁,无法隐藏
system("ffmpeg.exe -y -framerate 10 -start_number 1 -i E:\Image\Image_%d.bmp E:\test.mp4");
2.2、ShellExecuteEx方式
SHELLEXECUTEINFO ShExecInfo = { 0 }; ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO); ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS; ShExecInfo.hwnd = NULL; ShExecInfo.lpVerb = L"open"; ShExecInfo.lpFile = L"ffmpeg.exe"; ShExecInfo.lpParameters = L"ffmpeg.exe -y -framerate 10 -start_number 1 -i E:\Image\Image_%d.bmp E:\test.mp4"; ShExecInfo.lpDirectory = NULL; ShExecInfo.nShow = SW_HIDE;//窗口状态为隐藏 ShExecInfo.hInstApp = NULL; if (ShellExecuteEx(&ShExecInfo)) { if (ShExecInfo.hProcess) { WaitForSingleObject(ShExecInfo.hProcess, INFINITE); } }
3、使用opencv
cv::Mat image; int fps = 10;//视频帧率 /*cv::VideoWriter::fourcc('M', 'P', '4', 'V')生成MP4格式视频*/ /*cv::VideoWriter::fourcc('M', 'J', 'P', 'G')生成avi格式视频,大小比'X', 'V', 'I', 'D'大*/ /*cv::VideoWriter::fourcc('X', 'V', 'I', 'D')生成avi格式视频*/ cv::VideoWriter writer("video_out.avi", cv::VideoWriter::fourcc('M', 'J', 'P', 'G'), fps, cv::Size(3840, 2748)/*图片大小,一定不能出错*/, 0); for (size_t i = 1; i <= 100; i++) { image = cv::imread("Image_" + std::to_string(i) + ".bmp", cv::IMREAD_GRAYSCALE); if (!image.empty()) { writer.write(image); } }