我有以下代码:
info = new System.Diagnostics.ProcessStartInfo("TheProgram.exe", String.Join(" ", args));
info.CreateNoWindow = true;
info.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
info.RedirectStandardOutput = true;
info.UseShellExecute = false;
System.Diagnostics.Process p = System.Diagnostics.Process.Start(info);
p.WaitForExit();
Console.WriteLine(p.StandardOutput.ReadToEnd()); //need the StandardOutput contents
我知道我开始的进程的输出大约是7MB.在Windows控制台中运行它可以正常工作.不幸的是,这会在WaitForExit上无限期挂起.另请注意,对于较小的输出(例如3KB),此代码不会挂起.
ProcessStartInfo中的内部StandardOutput是否可能无法缓冲7MB？如果是这样,我该怎么做呢？如果没有,我做错了什么？
我正在寻找一个从输入视频中检索单个帧的函数,所以我可以将它用作缩略图.
这些方面的东西应该有效:
// filename examples: "test.avi", "test.dvr-ms"
// position is from 0 to 100 percent (0.0 to 1.0)
// returns a bitmap
byte[] GetVideoThumbnail(string filename, float position)
{
}
有没有人知道如何在.Net 3.0中这样做？
正确的解决方案将是此功能的"最佳"实现.避免选择空白帧的奖励点.
最近，我在互联网上搜索了很多不错的C＃库以从MP4视频中提取位图，但发现与该代码相似但与MP4类似的东西：
VideoStream stream = aviManager.GetVideoStream(@"C:\Users\User\Desktop\video.mp4");
//the video.mp4 is usually .avi or .mpeg
for (int n = 0; n < stream.CountFrames; n++)
{
Bitmap bmp = new Bitmap(stream.GetBitmap(Position));
bmp.Save(@"C:\Users\Nehoray\Desktop\Something.png");
bmp.Dispose;
}
谁能给我一个像这样的简单代码的库，仅用于MP4？:)
I am trying to get video details (length, height, width, and content type) from a video based on a URL. By using the nuget package https://www.nuget.org/packages/NReco.VideoInfo.LT I was able to create an Azure Function running locally pointing to my local install of FFProbe rather easily. However, the trick is now making it compatible with an Azure Function and, to the best of my knowledge, the easiest way to do that is by providing a Docker image that contains everything needed …
很抱歉问这样的问题,但我找不到一个好的答案:/
BitmapImage和Bitmap有什么区别？
我想使用TIFF图像与我必须工作的任何一个.我发现了一些适用于BitmapImage的教程和另一个适用于Bitmap的教程.