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Autres articles (111)
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Les vidéos
21 avril 2011, parComme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...) -
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Possibilité de déploiement en ferme
12 avril 2011, parMediaSPIP peut être installé comme une ferme, avec un seul "noyau" hébergé sur un serveur dédié et utilisé par une multitude de sites différents.
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Sur d’autres sites (12846)
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fileapi::WriteFile() doesn't send an input, if processthreadsapi::STARTUPINFO::hStdError is set (ffmpeg)
23 avril 2021, par LidekysI'm trying to capture my screen using
ffmpegin a different thread (which I create usingprocessthreadsapi::CreateProcess())so I'd be able to do something else in the main thread, and redirectffmpegoutput, so it wouldn't pop up in the console for the user to see. To stop filming, I send a 'q' input usingWriteFile(), and after that I want to saveffmpegaccumulated output usingReadFile().

However, if I set
STARTUPINFO::hStdError(note, thatffmpegoutput goes tostderr) to a pipe, from which I could read the accumulated data, the inputs I send usingWriteFile()are no longer registered and ffmpeg.exe keeps running.

I've tried redirecting
ffmpegoutput in a simple command line, but I can still stop the process by pressing the q button.

Also, if I record for less than 8 seconds, the input is registered and
ffmpeg.execloses.

Is there something wrong with my code, or is it processthreadsapi issue, any hints will be kindly appreciared !


Here's a minimal code of how I am trying to do it :



#include <iostream>

#include 
#include 

using namespace std;

HANDLE g_hChildStd_IN_Rd = NULL;
HANDLE g_hChildStd_IN_Wr = NULL;
HANDLE g_hChildStd_OUT_Rd = NULL;
HANDLE g_hChildStd_OUT_Wr = NULL;

int main()
{
 //Create IN and OUT pipes
 SECURITY_ATTRIBUTES saAttr;
 saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
 saAttr.lpSecurityDescriptor = NULL;


 if (! CreatePipe(&g_hChildStd_OUT_Rd, &g_hChildStd_OUT_Wr, &saAttr, 0) )
 cout<<"StdoutRd CreatePipe error"</Start recording
 if(!CreateProcess(NULL,
 "ffmpeg -y -f gdigrab -framerate 2 -i desktop record.avi", // command line
 NULL, // process security attributes
 NULL, // primary thread security attributes
 TRUE, // handles are inherited
 0, // creation flags
 NULL, // use parent's environment
 NULL, // use parent's current directory
 &siStartInfo, // STARTUPINFO pointer
 &piProcInfo)) // receives PROCESS_INFORMATION
 {
 cout<<"Error create process"</Record for a while
 while(getch() != 'k'){
 cout<<"While press k"</Stop recording by emulating a Q button push
 DWORD dwWritten;
 CHAR chBufW[1] = {'q'};

 if ( ! WriteFile(g_hChildStd_IN_Wr, chBufW, 1, &dwWritten, NULL) )
 cout<<"Error write file"</Save stdError (ffmpeg) data
 DWORD dwRead;
 char stdErrorData[4096];
 bool bSuccess;

 bSuccess = ReadFile( g_hChildStd_OUT_Wr, stdErrorData, 4096, &dwRead, NULL);

 if(!bSuccess || dwRead == 0)
 cout<<"Read failed"<code></iostream>

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uwp app throw error when install from package but works fine in any mode when run directly launching from visual studio
30 septembre 2020, par Abhishek SharmaI have created an app wrapping FFmpeg in uwp now for the requirement
I have all the major dll of FFmpeg and then set to content and copy always in property
now when I launch the app installed from the visual studio in any mode weather release, debug, x86,x64 it works fine but as I created a package and then install the app and run it, it throws an error where it says that dll not found not directly but says file not found which is because of dll because I face that problem in debug mode before and it's because of dll not available to uwp
you can look at the project here : https://github.com/AbhiSharma9350/Winfftool


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fluent-ffmpeg throw er when concatenate videos
2 mai 2020, par Romualdo Arrechea HernándezI'm using fluent-ffmpeg version 2.1.2.
When I execute the current code the output show off a error message :



var ffmpeg = require('fluent-ffmpeg');
var glob= require('glob');
ffmpeg.setFfmpegPath("/usr/bin/ffmpeg");
ffmpeg.setFfprobePath("/usr/bin/ffprobe");
var command = ffmpeg();

const path='/home/username/somefolder/*/output.mp4';

var videos=glob.sync(path);
var output="./output.mp4";
videos.map(video=>command.addInput(video));
command.mergeToFile(output);



the console output>



**events.js:287
 throw er; // Unhandled 'error' event
 ^

Error: ffmpeg exited with code 1: Conversion failed!

 at ChildProcess.<anonymous> (/home/r/Projects/prueba/node_modules/fluent-ffmpeg/lib/processor.js:182:22)
 at ChildProcess.emit (events.js:310:20)
 at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12)
Emitted 'error' event on FfmpegCommand instance at:
 at emitEnd (/home/r/Projects/prueba/node_modules/fluent-ffmpeg/lib/processor.js:424:16)
 at endCB (/home/r/Projects/prueba/node_modules/fluent-ffmpeg/lib/processor.js:544:13)
 at handleExit (/home/r/Projects/prueba/node_modules/fluent-ffmpeg/lib/processor.js:170:11)
 at ChildProcess.<anonymous> (/home/r/Projects/prueba/node_modules/fluent-ffmpeg/lib/processor.js:182:11)
 at ChildProcess.emit (events.js:310:20)
 at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12)**
</anonymous></anonymous>


The video should be created, but it's unable to concat. Some clue ?


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