目录
首先，做了视频上传的页面：
FFmpeg：视频转码
FFmpegHelper工作类：
后台控制器代码：
前端视图代码：
参考文章：
首先，做了视频上传的页面：
借鉴了这篇文章
ASP.NET MVC+LayUI视频上传 - 追逐时光者 - 博客园 (cnblogs.com)
其中的（maxRequestLength和maxAllowedContentLength）设置我是这样设置的
<system.web><compilation debug="true" targetFramework="4.6.2" /><httpRuntime targetFramework="4.6.2" maxRequestLength="2147483647" executionTimeout="600" />
</system.web><system.webServer>
<security><requestFiltering><requestLimits maxAllowedContentLength="2147483647"/></requestFiltering>
</security></system.webServer>layUI相关的报引用的是最新版的：发现最新版的只需要引用layui不需要layer
2.后续发现Video标签只支持以下几种格式就涉及到视频转码了：
| 格式 | IE | Firefox | Opera | Chrome | Safari |
|---|---|---|---|---|---|
| Ogg | No | 3.5+ | 10.5+ | 5.0+ | No |
| MPEG 4 | 9.0+ | No | No | 5.0+ | 3.0+ |
| WebM | No | 4.0+ | 10.6+ | 6.0+ | No |
FFmpeg：视频转码
第一步首先在网上下载ffmpeg.exe程序，并保存到工程目录中
ffmpeg安装教程（windows版）_ffmpeg windows安装-CSDN博客
FFmpegHelper工作类：
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Web;namespace Player.Helper
{public class FFmpegHelper{//安装的ffmpeg的路径 写在配置文件的 你也可以直接写你的路径 D:\ffmpeg\bin\ffmpeg.exe//static string FFmpegPath = System.Configuration.ConfigurationManager.AppSettings["ffmepg"];/// <summary>/// 视频转码为mp4文件/// </summary>/// <param name="videoUrl"></param>/// <param name="targetUrl"></param>public static void VideoToTs(string videoUrl, string targetUrl){//视频转码指令string cmd = string.Format("ffmpeg -i \"{0}\" -y -ab 32 -ar 22050 -b 800000 -s 480*360 \"{1}\"", videoUrl, targetUrl);RunMyProcess(cmd);}/// <summary>/// 执行cmd指令/// </summary>/// <param name="Parameters"></param>public static void RunMyProcess(string Parameters){using (Process p = new Process()){try{p.StartInfo.FileName = "cmd.exe";p.StartInfo.UseShellExecute = false;//是否使用操作系统shell启动p.StartInfo.RedirectStandardInput = true;//接受来自调用程序的输入信息p.StartInfo.RedirectStandardOutput = true;//由调用程序获取输出信息p.StartInfo.RedirectStandardError = true;//重定向标准错误输出p.StartInfo.CreateNoWindow = false;//不创建进程窗口 p.Start();//启动线程p.StandardInput.WriteLine(Parameters + "&&exit"); //向cmd窗口发送输入信息p.StandardInput.AutoFlush = true;p.StandardInput.Close();//获取cmd窗口的输出信息string output = p.StandardError.ReadToEnd(); //可以输出output查看具体报错原因p.WaitForExit();//等待完成p.Close();//关闭进程p.Dispose();//释放资源}catch (Exception ex){throw ex;}}}}
}后台控制器代码：
using Player.Helper;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Mvc;
using static System.Net.WebRequestMethods;namespace Player.Controllers
{public class FileUploadController : Controller{// GET: FileUploadpublic ActionResult Index(){return View();}/// <summary>/// 对验证和处理 HTML 窗体中的输入数据所需的信息进行封装，如FromData拼接而成的文件[图片,视频，文档等文件上传]/// </summary>/// <param name="context">FemContext对验证和处理html窗体中输入的数据进行封装</param>/// <returns></returns>[AcceptVerbs(HttpVerbs.Post)]public ActionResult FileLoad(FormContext context)//FemContext对验证和处理html窗体中输入的数据进行封装{HttpPostedFileBase httpPostedFileBase = Request.Files[0];//获取文件流if (httpPostedFileBase != null){try{ControllerContext.HttpContext.Request.ContentEncoding = Encoding.GetEncoding("UTF-8");ControllerContext.HttpContext.Response.Charset = "UTF-8";string fileName = Path.GetFileName(httpPostedFileBase.FileName);//原始文件名称string fileExtension = Path.GetExtension(fileName);//文件扩展名byte[] fileData = ReadFileBytes(httpPostedFileBase);//文件流转化为二进制字节string result = SaveFile(fileExtension, fileData);//文件保存return string.IsNullOrEmpty(result) ? Json(new { code = 0, path = "", msg = "网络异常，文件上传失败.~" }) : Json(new { code = 1, path = result, msg = "文件上传成功" });}catch (Exception ex){return Json(new { code = 0, msg = ex.Message, path = "" });}}else{return Json(new { code = 0, path = "", msg = "网络异常，文件上传失败!~" });}}/// <summary>/// 将文件流转化为二进制字节/// </summary>/// <param name="fileData">图片文件流</param>/// <returns></returns>private byte[] ReadFileBytes(HttpPostedFileBase fileData){byte[] data;using (var inputStream = fileData.InputStream){if (!(inputStream is MemoryStream memoryStream)){memoryStream = new MemoryStream();inputStream.CopyTo(memoryStream);}data = memoryStream.ToArray();}return data;}/// <summary>/// 保存文件/// </summary>/// <param name="fileExtension">文件扩展名</param>/// <param name="fileData">图片二进制文件信息</param>/// <returns></returns>private string SaveFile(string fileExtension, byte[] fileData){string result;string saveName = Guid.NewGuid().ToString() + fileExtension; //保存文件名称string basePath = "UploadFile";string saveDir = DateTime.Now.ToString("yyyy-MM-dd");// 文件上传后的保存路径string serverDir = Path.Combine(Server.MapPath("~/"), basePath, saveDir);string fileNme = Path.Combine(serverDir, saveName);//保存文件完整路径try{var savePath = Path.Combine(saveDir, saveName);//项目中是否存在文件夹，不存在创建if (!Directory.Exists(serverDir)){Directory.CreateDirectory(serverDir);}System.IO.File.WriteAllBytes(fileNme, fileData);//WriteAllBytes创建一个新的文件，按照对应的文件流写入，假如已存在则覆盖//返回前端项目文件地址result = "/" + basePath + "/" + saveDir + "/" + saveName;//进行视频转换var mp4Name = Guid.NewGuid().ToString() + ".mp4";string tsUrl = Path.Combine(serverDir, mp4Name);FFmpegHelper.VideoToTs(fileNme, tsUrl);//检测是否已生成ts文件if (!System.IO.File.Exists(tsUrl)){//删除源文件System.IO.File.Delete(fileNme);return null;}//删除MP4源文件System.IO.File.Delete(fileNme);result = "/" + basePath + "/" + saveDir + "/" + mp4Name;}catch (Exception ex){result = "发生错误" + ex.Message;}return result;}}}前端视图代码：
<!DOCTYPE html><head><meta charset="utf-8" /><!--最高级模式渲染文档--><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><title></title><link href="~/Content/Layui/css/layui.css" rel="stylesheet" />
</head>
<body><div class="jumbotron" style="margin-top: 200px;"><div class="row" style="margin-top: 20px;"><div class="form-group znStyle"><div class="col-sm-6"><div id="upload_all_file"><div class="layui-upload"><button type="button" class="layui-btn" id="VideoBtn"><i class="layui-icon"></i>上传视频</button><input type="hidden" name="Video" id="Video" /><div class="layui-upload-list" id="videoPlay"></div></div></div></div></div></div></div><script src="~/Content/Layui/layui.js"></script><!--layer.js视频上传--><script type="text/javascript">var upload;//上传图片layui.use('upload', function () {upload = layui.upload;upload.render({before: function () {layer.msg('视频努力上传中,请耐心等待...', { icon: 16, shade: 0.8, time: false });},elem: '#VideoBtn', url: '@Url.Action("FileLoad","FileUpload")', accept: 'video' //视频, exts: 'mp4|mov|wmv|flv|avi|avchd|webm|mkv|m4v'//只允许上传的后缀(mp4文件), done: function (res) {console.log(res);layer.closeAll();layer.msg(res.msg);if (res.code == 1) {$("#Video").val(res.path);$("#videoPlay").html('<video controls="controls" id="currentVideo" style="width:400px;"><source src="' + res.path + '" type="video/mp4" /><source src="' + res.path + '" type="video/webm" /><source src="' + res.path + '" type="audio/ogg" /></video>');$("#videoPlay").show();// 自动播放$("#currentVideo")[0].play();}}});$(".layui-upload-list").on("click", "i", function () {$(this).parent().remove();});});</script>
</body>参考文章：
Request Limits <requestLimits> | Microsoft Learn
httpRuntime代码放在web.config哪里?深度了解httpRuntime - ASP.NET编程_卡卡网
