问题描述
ffmpeg -i /wzfgs_img_storage/tuku.img_linux/upload/20210421_164313_803_a2a2.mov -vcodec h264 /video_list/MOV_002.mp4
单独在终端中执行上面的命令转码是可以处理完成视频的，但是用C#的Process调用ffmpeg进行转码，测试多次发现ffmpeg转码大概7分钟程序都会假死，实际查看进程ffmpeg又没有完全退出，但是视频就是中断转码了，后面将代码调整，用错误消息事件输出了ffmpeg的输出消息，这下就可以转换几个GB的视频了，没有出现转码中断情况；
解决关键代码：
主要是要把ffmpeg的输出消息接收到，这样就可以保证转码视频纵然转码耗时三个小时，也是稳定输出正常视频的
//程序异常输出消息
process.ErrorDataReceived += (o, e) =>
{
if (string.IsNullOrWhiteSpace(e?.Data))
{
return;
}
Console.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "程序异常消息：" + e.Data);
};
startInfo.RedirectStandardError = true;
process.BeginErrorReadLine();
本程序在CentOS8中执行
终端命令
#192.168.1.117部署控制台程序路径：
cd /consoleAppTest
#控制台发布的程序压缩包publish.zip上传到
/consoleAppTest
#解压文件
unzip publish.zip
#给程序授予执行权限
chmod +x ./publish/ConsoleAppNET5.TestVideoZhuanMa
#直接执行
./publish/ConsoleAppNET5.TestVideoZhuanMa
#后台静默执行，会自动生成输出文件nohup.out
nohup ./publish/ConsoleAppNET5.TestVideoZhuanMa &
完整有效参考代码
using Microsoft.AspNetCore.SignalR.Client;
using System;
using System.Diagnostics;
using System.Threading.Tasks;
namespace ConsoleAppNET5.TestVideoZhuanMa
{
class Program
{
static async Task Main(string[] args)
{
HubConnection connection = new HubConnectionBuilder()
.WithUrl("http://192.168.1.239:8050/ChatHub")
.WithAutomaticReconnect()
.Build();
connection.Reconnecting += error =>
{
Console.WriteLine("正在重新连接");
return Task.CompletedTask;
};
connection.Closed += async (error) =>
{
Console.WriteLine("10秒后重新连接");
await Task.Delay(10 * 1000);
try
{
//连接
await connection.StartAsync();
Console.WriteLine("连接成功");
}
catch (Exception ex)
{
Console.WriteLine("连接signlr异常:" + ex.ToString());
}
};
try
{
//连接
await connection.StartAsync();
Console.WriteLine("连接成功");
}
catch (Exception ex)
{
Console.WriteLine("连接signlr异常:" + ex.ToString());
}
//try
//{
// //发送消息
// await connection.InvokeAsync("SendMessage",
// "wusong001", "控制台消息1122");
//}
//catch (Exception ex)
//{
// Console.WriteLine("发送消息异常" + ex.ToString());
//}
try
{
Console.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "开始转码...");
var process = new System.Diagnostics.Process();
//进程优先级设置
//No process is associated with this object
//process.PriorityClass = ProcessPriorityClass.High;
//process.PriorityClass = ProcessPriorityClass.AboveNormal;
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
//应该触发退出事件
process.EnableRaisingEvents = true;
//程序退出事件
process.Exited += (s, e) =>
{
stopwatch.Stop();
Console.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "程序1退出，总耗时(毫秒)" + stopwatch.ElapsedMilliseconds);
};
//程序输出消息事件
process.OutputDataReceived += (o, e) =>
{
if (string.IsNullOrWhiteSpace(e?.Data))
{
return;
}
Console.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "程序1执行消息：" + e.Data);
};
//程序异常输出消息
process.ErrorDataReceived += async(o, e) =>
{
if (string.IsNullOrWhiteSpace(e?.Data))
{
return;
}
Console.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "程序异常消息：" + e.Data);
try
{
//发送消息
await connection.InvokeAsync("SendMessage",
"transcoding", e.Data);
}
catch (Exception ex)
{
Console.WriteLine("singnalr发送消息异常:" + ex.ToString());
}
};
//var startInfo = new System.Diagnostics.ProcessStartInfo("ping", "www.qq.com -t");
// -i /video_list/IMG_0837.MOV -vcodec h264 /video_list/IMG_0837_10A.mp4
//var startInfo = new System.Diagnostics.ProcessStartInfo("ffmpeg", " -i /video_list/IMG_0837.MOV -vcodec h264 /video_list/IMG_0837_19A.mp4");
//31秒
//var startInfo = new System.Diagnostics.ProcessStartInfo("ffmpeg", " -i /wzfgs_img_storage/tuku.img_linux/upload/20210421_164313_803_a2a2.mov -vcodec h264 /video_list/MOV_001.mp4");
//视频大小3GB，将视频转码为MP4格式，编码为h264，支持web浏览器video播放
//var startInfo = new System.Diagnostics.ProcessStartInfo("ffmpeg", " -i /video_list/扎克·施奈德版正义联盟.rmvb -vcodec h264 /video_list/zake003.mp4");
var startInfo = new System.Diagnostics.ProcessStartInfo("ffmpeg", " -i /wzfgs_img_storage/tuku.img_linux/upload/20210421_164313_803_a2a2.mov -vcodec h264 /video_list/MOV_004.mp4");
startInfo.RedirectStandardError = true;
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardInput = true;
process.StartInfo = startInfo;
process.Start();
process.BeginOutputReadLine();
process.BeginErrorReadLine();
process.WaitForExit();
process.Close();
process.Dispose();
//process.Kill();
Console.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "转码完成");
}
catch (Exception ex)
{
Console.WriteLine("转码异常" + ex.ToString());
}
}
}
}
终端输出消息
2021-04-25 20:01:05程序异常消息：frame=219292 fps= 18 q=28.0 size= 2665984kB time=02:32:24.88 bitrate=2388.2kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:05程序异常消息：frame=219304 fps= 18 q=28.0 size= 2665984kB time=02:32:24.88 bitrate=2388.2kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:06程序异常消息：frame=219315 fps= 18 q=28.0 size= 2666240kB time=02:32:26.74 bitrate=2387.9kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:06程序异常消息：frame=219327 fps= 18 q=28.0 size= 2666240kB time=02:32:26.74 bitrate=2387.9kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:07程序异常消息：frame=219339 fps= 18 q=28.0 size= 2666240kB time=02:32:26.74 bitrate=2387.9kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:07程序异常消息：frame=219351 fps= 18 q=28.0 size= 2666496kB time=02:32:26.74 bitrate=2388.2kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:08程序异常消息：frame=219363 fps= 18 q=28.0 size= 2666496kB time=02:32:28.59 bitrate=2387.7kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:08程序异常消息：frame=219379 fps= 18 q=28.0 size= 2666496kB time=02:32:28.59 bitrate=2387.7kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:09程序异常消息：frame=219395 fps= 18 q=28.0 size= 2666752kB time=02:32:28.62 bitrate=2387.9kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:09程序异常消息：frame=219409 fps= 18 q=28.0 size= 2666752kB time=02:32:30.45 bitrate=2387.4kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:10程序异常消息：frame=219427 fps= 18 q=28.0 size= 2666752kB time=02:32:30.45 bitrate=2387.4kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:10程序异常消息：frame=219443 fps= 18 q=28.0 size= 2667008kB time=02:32:32.31 bitrate=2387.2kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:11程序异常消息：frame=219459 fps= 18 q=28.0 size= 2667008kB time=02:32:32.31 bitrate=2387.2kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:11程序异常消息：frame=219475 fps= 18 q=28.0 size= 2667008kB time=02:32:32.31 bitrate=2387.2kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:12程序异常消息：frame=219489 fps= 18 q=28.0 size= 2667264kB time=02:32:34.17 bitrate=2386.9kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:12程序异常消息：frame=219505 fps= 18 q=28.0 size= 2667264kB time=02:32:34.17 bitrate=2386.9kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:13程序异常消息：frame=219520 fps= 18 q=28.0 size= 2667264kB time=02:32:34.17 bitrate=2386.9kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:14程序异常消息：frame=219535 fps= 18 q=28.0 size= 2667520kB time=02:32:36.02 bitrate=2386.7kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:14程序异常消息：frame=219549 fps= 18 q=28.0 size= 2667520kB time=02:32:36.02 bitrate=2386.7kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:15程序异常消息：frame=219562 fps= 18 q=28.0 size= 2667520kB time=02:32:36.02 bitrate=2386.7kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:15程序异常消息：frame=219575 fps= 18 q=28.0 size= 2667776kB time=02:32:36.07 bitrate=2386.9kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:16程序异常消息：frame=219588 fps= 18 q=28.0 size= 2667776kB time=02:32:37.88 bitrate=2386.4kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:16程序异常消息：frame=219600 fps= 18 q=28.0 size= 2668032kB time=02:32:37.88 bitrate=2386.6kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:17程序异常消息：frame=219614 fps= 18 q=28.0 size= 2668032kB time=02:32:37.88 bitrate=2386.6kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:17程序异常消息：frame=219629 fps= 18 q=28.0 size= 2668288kB time=02:32:39.74 bitrate=2386.4kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:19程序异常消息：frame=219640 fps= 18 q=-1.0 Lsize= 2677244kB time=02:32:41.64 bitrate=2393.9kbits/s dup=1361 drop=0 speed=0.768x
2021-04-25 20:01:19程序异常消息：video:2524975kB audio:143589kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.325273%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] frame I:2574 Avg QP:15.81 size: 48340
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] frame P:76790 Avg QP:20.95 size: 20647
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] frame B:140276 Avg QP:24.04 size: 6243
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] consecutive B-frames: 4.8% 28.9% 3.4% 62.9%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] mb I I16..4: 28.7% 60.2% 11.1%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] mb P I16..4: 7.2% 13.2% 1.4% P16..4: 24.0% 6.1% 2.2% 0.0% 0.0% skip:45.9%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] mb B I16..4: 0.7% 1.0% 0.2% B16..8: 26.3% 1.6% 0.1% direct: 1.0% skip:69.0% L0:43.0% L1:52.0% BI: 5.0%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] 8x8 transform intra:59.6% inter:77.5%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] coded y,uvDC,uvAC intra: 30.5% 29.6% 4.6% inter: 5.4% 5.4% 0.1%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] i16 v,h,dc,p: 29% 24% 10% 37%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 21% 24% 3% 4% 4% 4% 4% 4%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 23% 14% 4% 6% 7% 6% 5% 3%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] i8c dc,h,v,p: 62% 17% 18% 3%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] Weighted P-Frames: Y:0.4% UV:0.3%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] ref P L0: 72.5% 9.7% 13.1% 4.7% 0.0%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] ref B L0: 90.9% 7.9% 1.2%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] ref B L1: 96.5% 3.5%
2021-04-25 20:01:19程序异常消息：[libx264 @ 0x66216c0] kb/s:2258.03
2021-04-25 20:01:19程序异常消息：[aac @ 0x6680ac0] Qavg: 272.739
2021-04-25 20:01:19程序1退出，总耗时(毫秒)11926342
2021-04-25 20:01:19转码完成
2021-04-25 20:01:33转换task状态：RanToCompletion
2021-04-25 20:01:33转换完成2
2021-04-25 20:01:33退出while循环主线程
[root@localhost video_list]#
转载：https://blog.csdn.net/u011511086/article/details/116143100
查看评论