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Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Sur d’autres sites (1907)
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How to Kill ffmpeg process in node.js
8 février 2017, par SanjayI am using node.js code that convert Axis Ipcamera live stream into mp4 using FFMPEG
var childProcess=require('child_process');
var childArguments = [];
var child=[];
var cmd='ffmpeg -i rtsp://172.24.22.117:554/axis-media/media.amp -vcodec libx264 -pix_fmt yuv420p -profile:v baseline -preset slower -crf 18 -vf "scale=trunc(in_w/2)*2:trunc(in_h/2)*2"'+' '+__dirname+'/uploads/ouput.mp4';
child=childProcess.exec(
cmd,
childArguments,
{
env: process.env,
silent:true
}, function (err, stdout, stderr) {
if (err) {
throw err;
}
console.log(stdout);
});
// here generate events for listen child process (works properly)
// Listen for incoming(stdout) data
child.stdout.on('data', function (data) {
console.log("Got data from child: " + data);
});
// Listen for any errors:
child.stderr.on('data', function (data) {
console.log('There was an error: ' + data);
});
// Listen for exit event
child.on('exit', function(code) {
console.log('Child process exited with exit code ' + code);
child.stdout.pause();
child.kill();
});my above code works perfectly. It gives the output as I want, but I am not able to kill(stop) the ffmpeg command. I am using the code below for stopping the process, but in background it still continues.
child.kill("SIGTERM");I also used following commands : child.kill(’SIGUSR1’) ; child.kill("SIGHUP") ; child.kill("SIGINT") ;child.kill(’SIGUSR2’) ; for killing this process but it not works.
Currently I forcefully kill the node application to stop ffmpeg command and generate mp4 file. I do not want this.
But I want commands that stop ffmpeg process and generate mp4 file, without killing the node application. -
Error : Package : perl-Git-1.8.2.1-1.el5.x86_64 (epel) Requires : perl(:MODULE_COMPAT_5.8.8)
23 décembre 2014, par P C SAS3error in loading github lib tool
i have tried to load the following dependencies to load ffmpeg from source when i try to run the following command i am getting errors as below
yum install autoconf automake gcc gcc-c++ git libtool make nasm pkgconfig zlib-devel
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.viethosting.vn
* epel: ftp.cuhk.edu.hk
* extras: mirrors.viethosting.vn
* updates: mirrors.vinahost.vn
base | 3.7 kB 00:00
epel | 3.7 kB 00:00
epel/primary_db | 3.7 MB 00:18
extras | 3.4 kB 00:00
updates | 3.4 kB 00:00
updates/primary_db | 1.5 MB 00:16
vz-base | 951 B 00:00
vz-updates | 951 B 00:00
Setting up Install Process
Package autoconf-2.63-5.1.el6.noarch already installed and latest version
Package automake-1.11.1-4.el6.noarch already installed and latest version
Package gcc-4.4.7-11.el6.x86_64 already installed and latest version
Package gcc-c++-4.4.7-11.el6.x86_64 already installed and latest version
Package 1:make-3.81-20.el6.x86_64 already installed and latest version
Package 1:pkgconfig-0.23-9.1.el6.x86_64 already installed and latest version
Package zlib-devel-1.2.3-29.el6.x86_64 already installed and latest version
Resolving Dependencies
--> Running transaction check
---> Package git.x86_64 0:1.8.2.1-1.el5 will be installed
--> Processing Dependency: perl-Git = 1.8.2.1-1.el5 for package: git-1.8.2.1-1.el5.x86_64
--> Processing Dependency: perl(Term::ReadKey) for package: git-1.8.2.1-1.el5.x86_64
--> Processing Dependency: perl(Git) for package: git-1.8.2.1-1.el5.x86_64
--> Processing Dependency: perl(Error) for package: git-1.8.2.1-1.el5.x86_64
--> Processing Dependency: libssl.so.6()(64bit) for package: git-1.8.2.1-1.el5.x86_64
--> Processing Dependency: libexpat.so.0()(64bit) for package: git-1.8.2.1-1.el5.x86_64
--> Processing Dependency: libcurl.so.3()(64bit) for package: git-1.8.2.1-1.el5.x86_64
--> Processing Dependency: libcrypto.so.6()(64bit) for package: git-1.8.2.1-1.el5.x86_64
---> Package libtool.x86_64 0:2.2.6-15.5.el6 will be installed
---> Package nasm.x86_64 0:2.07-7.el6 will be installed
--> Running transaction check
---> Package compat-expat1.x86_64 0:1.95.8-8.el6 will be installed
---> Package git.x86_64 0:1.8.2.1-1.el5 will be installed
--> Processing Dependency: libcurl.so.3()(64bit) for package: git-1.8.2.1-1.el5.x86_64
---> Package openssl098e.x86_64 0:0.9.8e-18.el6_5.2 will be installed
---> Package perl-Error.noarch 1:0.17015-4.el6 will be installed
---> Package perl-Git.x86_64 0:1.8.2.1-1.el5 will be installed
--> Processing Dependency: perl(:MODULE_COMPAT_5.8.8) for package: perl-Git-1.8.2.1-1.el5.x86_64
---> Package perl-TermReadKey.x86_64 0:2.30-13.el6 will be installed
--> Finished Dependency Resolution
Error: Package: perl-Git-1.8.2.1-1.el5.x86_64 (epel)
Requires: perl(:MODULE_COMPAT_5.8.8)
Error: Package: git-1.8.2.1-1.el5.x86_64 (epel)
Requires: libcurl.so.3()(64bit)
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigestnow i went into some solution on net which asked to check with disablerepo to rpmforge it also throw the following error
# yum --disablerepo=rpmforge install git
Loaded plugins: fastestmirror
Error getting repository data for rpmforge, repository not foundkindly help so that i can install all the dependencies so that i may not face any problem while configuring ffmpge
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C# .net mvc Process return encoding progress (FFMpeg) to client initiated with ajax
19 décembre 2014, par user1585895I am using FFMpeg to encode wav to mp3s, and on completion download the final .zip to the client.
All works great, and I can Debug.WriteLine the progress of the encoding, but I would like to return _percentage back to the client to do some UI updates based on the value of _percentage and if all encoding is done, Im not sure how to approach this.
My thinking is as follows :
- ajax post to CreateAndDownloadAlbum(List trackIds, int productId)
- loop through List and create a new Process, run
— parse StdError to get encoding percentage in myProcess_ErrorData(object source, DataReceivedEventArgs e)
— send _percentage value at timed intervals back to CreateAndDownloadAlbum
— update UI based on value of _percentage, when all is complete break and call public ActionResult SendFileDownload()
Any input would be great.
Thanks !
front end AJAX call to post list of file Ids to download
var data = $('#downloadAlbum').serialize();
$.ajax({
url: "/Admin/CreateAndDownloadAlbum",
method: "POST",
data: data,
dataType: 'json',
success: function(result) {
// wait here for _percentage
// if not 100, call again to get new _percentage value
// if 100, update UI, move to next file being encoded
// if all encoding is complete, call SendFileDownload() in controller
}
});then the controller code
[HttpPost]
public void CreateAndDownloadAlbum(List<trackstodownload> trackIds, int productId)
{
_numTracksToDownload = trackIds.Count;
var product = _productRepository.GetProductById(productId);
var artist = _artistRepository.GetArtistById(product.ArtistId);
var folderGuid = Guid.NewGuid();
_zipFolder = string.Concat(artist.ArtistName.ToUpper().Replace(" ", "_"), "[", product.ProductName.ToUpper().Replace(" ", "_"), "].zip");
_mp3FolderPath = Server.MapPath("/Files/" + productId + "/" + folderGuid);
_zipDownloadPath = Server.MapPath("/Delivery/" + _zipFolder);
if (!Directory.Exists(Server.MapPath("/Files/" + productId + "/" + folderGuid)))
{
Directory.CreateDirectory(Server.MapPath("/Files/" + productId + "/" + folderGuid));
}
foreach (var z in trackIds)
{
var track = _trackRepository.GetTrackById(z.TrackId);
var process = new Process();
var startInfo = new ProcessStartInfo
{
WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden,
FileName = "F:\\Development\\ffmpeg\\ffmpeg.exe",
RedirectStandardOutput = true,
RedirectStandardError = true,
UseShellExecute = false
};
var startFile = Path.Combine("F:\\Development","Files", track.ProductId.ToString(), track.TrackFileName);
var endFile = Path.Combine("F:\\Development", "Files", track.ProductId.ToString(), folderGuid.ToString(), track.TrackFileName.Replace(".wav", ".mp3"));
startInfo.Arguments = "-i " + startFile + " -b:a 320k " + endFile + " -stats";
process.StartInfo = startInfo;
process.EnableRaisingEvents = true;
process.Exited += myProcess_exited;
process.OutputDataReceived += myProcess_OutputData;
process.ErrorDataReceived += myProcess_ErrorData;
try
{
process.Start();
process.BeginOutputReadLine();
process.BeginErrorReadLine();
if (process.HasExited == false)
{
process.WaitForExit();
}
}
catch (Exception)
{
throw;
}
}
SendFileDownload();
}
public ActionResult SendFileDownload()
{
// zip and move to delivery folder
using (var zip = new ZipFile())
{
zip.AddDirectory(_mp3FolderPath, _zipFolder);
zip.Save(_zipDownloadPath);
}
// delete items in temp guid folder
var downloadedMessageInfo = new DirectoryInfo(_mp3FolderPath);
foreach (var f in downloadedMessageInfo.GetFiles())
{
f.Delete();
}
// delete temp folder
Directory.Delete(_mp3FolderPath);
// download file
string file = _zipDownloadPath;
return File(file, "application/force-download", Path.GetFileName(file));
}
public void myProcess_exited(Object source, EventArgs e)
{
Debug.WriteLine("myProcess_exited ===================================");
_duration = new TimeSpan(0, 0, 0);
_frameTime = new TimeSpan(0, 0, 0);
_percentage = 0;
_numEncodedTracks++; // using this to tell me if all tracks have been encoded
}
public void myProcess_OutputData(object source, DataReceivedEventArgs e)
{
}
public void myProcess_ErrorData(object source, DataReceivedEventArgs e)
{
string strMessage = e.Data;
if (!string.IsNullOrEmpty(strMessage) && (strMessage.Contains("Duration: ") || strMessage.Contains("size=")))
{
if (_duration != null)
{
if (strMessage.Contains("Duration: "))
{
_strDuration = strMessage.Substring(strMessage.IndexOf("Duration: ") + ("Duration: ").Length,
("00:00:00.00").Length);
char[] d_delHrMn = new char[] { ':' };
string[] d_tempHrMn = _strDuration.Split(d_delHrMn, StringSplitOptions.RemoveEmptyEntries);
char[] d_delSec = new char[] { '.' };
string[] d_tempSec = d_tempHrMn[2].Split(d_delSec, StringSplitOptions.RemoveEmptyEntries);
var d_hour = d_tempHrMn[0] == "0" ? 0 : Convert.ToInt32(d_tempHrMn[0]);
var d_min = d_tempHrMn[1] == "0" ? 0 : Convert.ToInt32(d_tempHrMn[1]);
var d_sec = d_tempSec[0] == "0" ? 0 : Convert.ToInt32(d_tempSec[0]);
_duration = new TimeSpan(d_hour, d_min, d_sec);
}
}
if (strMessage.Contains("size="))
{
_strFrameTime = strMessage.Substring(strMessage.IndexOf("time=") + ("time=").Length,
("00:00:00.00").Length);
char[] f_delHrMn = new char[] { ':' };
string[] f_tempHrMn = _strFrameTime.Split(f_delHrMn, StringSplitOptions.RemoveEmptyEntries);
char[] f_delSec = new char[] { '.' };
string[] f_tempSec = f_tempHrMn[2].Split(f_delSec, StringSplitOptions.RemoveEmptyEntries);
var f_hour = f_tempHrMn[0] == "0" ? 0 : Convert.ToInt32(f_tempHrMn[0]);
var f_min = f_tempHrMn[1] == "0" ? 0 : Convert.ToInt32(f_tempHrMn[1]);
var f_sec = f_tempSec[0] == "0" ? 0 : Convert.ToInt32(f_tempSec[0]);
_frameTime = new TimeSpan(f_hour, f_min, f_sec);
}
if (_strDuration != "00:00:00.00" && _strFrameTime != "00:00:00.00" && _percentage < 100)
{
_percentage = _frameTime.TotalMilliseconds / _duration.TotalMilliseconds * 100;
Debug.WriteLine(_percentage + " || " + _frameTime + " " + _duration);
}
}
}
</trackstodownload>
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