Application of video transcoding in real project

Application of video transcoding in real project

Thefollowing is the use of the Ffmpeg.exe as transcoding tool, as it was previously encountered in the project to convert . flv file video to . mp4.

1: Next need to prepare tools;http://ffmpeg.org/ Download the corresponding version of Ffmpeg.exe ( +32 bit )

2: Implementation code, the following is just one way to implement:

Using System;

Using System.Collections.Generic;

Using System.Diagnostics;

Using System.Linq;

Using System.Web;

Namespace Videoconvert.models

{

public class Ffmpeghelper

{

<summary>

32 Guests

</summary>

private static string FfmpegPath32 = AppDomain.CurrentDomain.BaseDirectory + @ "Ffmpeg\32\ffmpeg.exe";

<summary>

64 guests

</summary>

private static string ffmpegPath64 = AppDomain.CurrentDomain.BaseDirectory + @ "Ffmpeg\64\ffmpeg.exe";

<summary>

Actual version

</summary>

private static string path;

private static Process p = null;

<summary>

Transcode FLV to MP4

</summary>

<param name= "OldPath" >....flv</param>

<param name= "NewPath" >.....mp4</param>

public void VideoConvert (String oldpath,string newpath)

{

using (p = new Process ())

{

For more transcoding methods, you can view official documents, which are just one of the following:

string arg = "-I" + OldPath + "-c:v libx264-crf 23-c:a libfaac-q:a" + NewPath;

To determine the system version:

Is32or64 ();

p.startinfo.arguments = arg;

p.StartInfo.FileName = path;

P.startinfo.redirectstandarderror = true;

P.startinfo.redirectstandardinput = true;

P.startinfo.redirectstandardoutput = true;

Indicates that the transcoding window is not displayed

P.startinfo.createnowindow = true;

P.startinfo.useshellexecute = false;

Sets the event to be triggered when the process terminates;

p.EnableRaisingEvents = true;

p.exited + = new EventHandler (p_exited);

P.outputdatareceived +=new Datareceivedeventhandler (p_outputdatareceived);

P.errordatareceived +=new Datareceivedeventhandler (p_errordatareceived);

P.start ();

Read output;

P.beginoutputreadline ();

P.beginerrorreadline ();

Set the wait process to trigger the P_exited event and proceed down;

p.WaitForExit ();

}

}

void P_errordatareceived (object sender, Datareceivedeventargs e)

{

Logging output logs

}

void P_outputdatareceived (object sender, Datareceivedeventargs e)

{

Logging output logs

}

void P_exited (object sender, EventArgs e)

{

The process exits triggering the event, which can be used to perform other operations or to determine

}

public void Is32or64 ()

{

if (Environment.is64bitoperatingsystem)

{

Path = ffmpegPath64;

}

else {

Path = FfmpegPath32;

}

}

}

}

Application of video transcoding in real project