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  • Qu’est ce qu’un éditorial

    21 juin 2013, par

    Ecrivez votre de point de vue dans un article. Celui-ci sera rangé dans une rubrique prévue à cet effet.
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  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
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  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
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  • Error while processing the decoded data for stream using ffmpeg

    15 juin 2018, par Robert Smith

    I am using the following command :

    ffmpeg
    

    
    -i "video1a.flv"
    
    -i "video1b.flv"
    
    -i "video1c.flv"
    
    -i "video2a.flv"
    
    -i "video3a.flv"
    
    -i "video4a.flv"
    
    -i "video4b.flv"
    
    -i "video4c.flv"
    
    -i "video4d.flv"
    
    -i "video4e.flv"
    

    
    -filter_complex
    

    
    nullsrc=size=640x480[base];
    
    [0:v]setpts=PTS-STARTPTS+0.12/TB,scale=320x240[1a];
    
    [1:v]setpts=PTS-STARTPTS+3469.115/TB,scale=320x240[1b];
    
    [2:v]setpts=PTS-STARTPTS+7739.299/TB,scale=320x240[1c];
    
    [5:v]setpts=PTS-STARTPTS+4390.466/TB,scale=320x240[4a];
    
    [6:v]setpts=PTS-STARTPTS+6803.937/TB,scale=320x240[4b];
    
    [7:v]setpts=PTS-STARTPTS+8242.005/TB,scale=320x240[4c];
    
    [8:v]setpts=PTS-STARTPTS+9811.577/TB,scale=320x240[4d];
    
    [9:v]setpts=PTS-STARTPTS+10765.19/TB,scale=320x240[4e];
    
    [base][1a]overlay=eof_action=pass[o1];
    
    [o1][1b]overlay=eof_action=pass[o1];
    
    [o1][1c]overlay=eof_action=pass:shortest=1[o1];
    
    [o1][4a]overlay=eof_action=pass:x=320:y=240[o4];
    
    [o4][4b]overlay=eof_action=pass:x=320:y=240[o4];
    
    [o4][4c]overlay=eof_action=pass:x=320:y=240[o4];
    
    [o4][4d]overlay=eof_action=pass:x=320:y=240[o4];
    
    [o4][4e]overlay=eof_action=pass:x=320:y=240;
    
    [0:a]asetpts=PTS-STARTPTS+0.12/TB,aresample=async=1,pan=1c|c0=c0,apad[a1a];
    
    [1:a]asetpts=PTS-STARTPTS+3469.115/TB,aresample=async=1,pan=1c|c0=c0,apad[a1b];
    
    [2:a]asetpts=PTS-STARTPTS+7739.299/TB,aresample=async=1,pan=1c|c0=c0[a1c];
    
    [3:a]asetpts=PTS-STARTPTS+82.55/TB,aresample=async=1,pan=1c|c0=c0,apad[a2a];
    
    [4:a]asetpts=PTS-STARTPTS+2687.265/TB,aresample=async=1,pan=1c|c0=c0,apad[a3a];
    
    [a1a][a1b][a1c][a2a][a3a]amerge=inputs=5
    

    
    -c:v libx264 -c:a aac -ac 2 output.mp4

    This is the stream data from ffmpeg :

    Input #0
    
    Stream #0:0: Video: vp6f, yuv420p, 160x128, 1k tbr, 1k tbn
    
    Stream #0:1: Audio: nellymoser, 11025 Hz, mono, flt
    
Input #1
    
    Stream #1:0: Audio: nellymoser, 11025 Hz, mono, flt
    
    Stream #1:1: Video: vp6f, yuv420p, 160x128, 1k tbr, 1k tbn
    
Input #2
    
    Stream #2:0: Audio: nellymoser, 11025 Hz, mono, flt
    
    Stream #2:1: Video: vp6f, yuv420p, 160x128, 1k tbr, 1k tbn
    
Input #3
    
    Stream #3:0: Audio: nellymoser, 11025 Hz, mono, flt
    
Input #4
    
    Stream #4:0: Audio: nellymoser, 11025 Hz, mono, flt
    
Input #5
    
    Stream #5:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
    
Input #6
    
    Stream #6:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
    
Input #7
    
    Stream #7:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
    
Input #8
    
    Stream #8:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
    
Input #9
    
    Stream #9:0: Video: vp6f, yuv420p, 1680x1056, 1k tbr, 1k tbn
    
Stream mapping:
    
  Stream #0:0 (vp6f) -> setpts
    
  Stream #0:1 (nellymoser) -> asetpts
    
  Stream #1:0 (nellymoser) -> asetpts
    
  Stream #1:1 (vp6f) -> setpts
    
  Stream #2:0 (nellymoser) -> asetpts
    
  Stream #2:1 (vp6f) -> setpts
    
  Stream #3:0 (nellymoser) -> asetpts
    
  Stream #4:0 (nellymoser) -> asetpts
    
  Stream #5:0 (vp6f) -> setpts
    
  Stream #6:0 (vp6f) -> setpts
    
  Stream #7:0 (vp6f) -> setpts
    
  Stream #8:0 (vp6f) -> setpts
    
  Stream #9:0 (vp6f) -> setpts
    
  overlay -> Stream #0:0 (libx264)
    
  amerge -> Stream #0:1 (aac)

    This is the error :

    Press [q] to stop, [?] for help
    

    
Enter command: <target>|all <time>|-1 <command>[ <argument>]
    

    
Parse error, at least 3 arguments were expected, only 1 given in string 'ho Oscar'
    
[Parsed_amerge_44 @ 0a7238c0] No channel layout for input 1
    
[Parsed_amerge_44 @ 0a7238c0] Input channel layouts overlap: output layout will be determined by the number of distinct input channels
    
[Parsed_pan_27 @ 07681880] Pure channel mapping detected: 0
    
[Parsed_pan_31 @ 07681b40] Pure channel mapping detected: 0
    
[Parsed_pan_35 @ 0a7232c0] Pure channel mapping detected: 0
    
[Parsed_pan_38 @ 0a7234c0] Pure channel mapping detected: 0
    
[Parsed_pan_42 @ 0a723740] Pure channel mapping detected: 0
    
[libx264 @ 069e8a40] using SAR=1/1
    
[libx264 @ 069e8a40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 069e8a40] profile High, level 3.0
    
[libx264 @ 069e8a40] 264 - core 155 r2901 7d0ff22 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=15 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    canSeekToEnd    : false
    
    encoder         : Lavf58.16.100
    
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
    
    Metadata:
    
      encoder         : Lavc58.19.102 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 11025 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      encoder         : Lavc58.19.102 aac
    
frame=  200 fps=0.0 q=28.0 size=       0kB time=00:00:07.82 bitrate=   0.0kbits/s speed=15.6x    
    
...   
    
frame=30132 fps=497 q=28.0 size=   29952kB time=00:20:05.14 bitrate= 203.6kbits/s speed=19.9x    
    
Error while filtering: Cannot allocate memory
    
Failed to inject frame into filter network: Cannot allocate memory
    
Error while processing the decoded data for stream #2:1
    
[libx264 @ 069e8a40] frame I:121   Avg QP: 8.83  size:  7052
    
[libx264 @ 069e8a40] frame P:7609  Avg QP:18.33  size:  1527
    
[libx264 @ 069e8a40] frame B:22367 Avg QP:25.44  size:   112
    
[libx264 @ 069e8a40] consecutive B-frames:  0.6%  0.7%  1.0% 97.8%
    
[libx264 @ 069e8a40] mb I  I16..4: 75.7% 18.3%  6.0%
    
[libx264 @ 069e8a40] mb P  I16..4:  0.3%  0.7%  0.1%  P16..4: 10.6%  3.3%  1.6%  0.0%  0.0%    skip:83.4%
    
[libx264 @ 069e8a40] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  3.2%  0.2%  0.0%  direct: 0.2%  skip:96.5%  L0:47.7% L1:48.2% BI: 4.0%
    
[libx264 @ 069e8a40] 8x8 transform intra:37.4% inter:70.2%
    
[libx264 @ 069e8a40] coded y,uvDC,uvAC intra: 38.9% 46.1% 28.7% inter: 1.7% 3.3% 0.1%
    
[libx264 @ 069e8a40] i16 v,h,dc,p: 78%  8%  4% 10%
    
[libx264 @ 069e8a40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 20% 12%  3%  6%  8%  6%  6%  7%
    
[libx264 @ 069e8a40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 37% 22%  9%  4%  6%  7%  5%  5%  4%
    
[libx264 @ 069e8a40] i8c dc,h,v,p: 60% 16% 17%  7%
    
[libx264 @ 069e8a40] Weighted P-Frames: Y:0.7% UV:0.6%
    
[libx264 @ 069e8a40] ref P L0: 65.5% 12.3% 14.2%  8.0%  0.0%
    
[libx264 @ 069e8a40] ref B L0: 90.2%  7.5%  2.3%
    
[libx264 @ 069e8a40] ref B L1: 96.4%  3.6%
    
[libx264 @ 069e8a40] kb/s:99.58
    
[aac @ 069e9600] Qavg: 65519.982
    
[aac @ 069e9600] 2 frames left in the queue on closing
    
Conversion failed!
    
</argument></command></time></target>

    I am trying to figure out how to fix these errors :

    Error while filtering: Cannot allocate memory
    
Failed to inject frame into filter network: Cannot allocate memory
    
Error while processing the decoded data for stream #2:1

    Observation #1

    If I run the following command on stream #2:1 by itself :

    ffmpeg -i video1c.flv -vcodec libx264 -acodec aac video1c.mp4

    The files is converted fine with no errors.

    Observation #2

    Running MediaInfo on video1c.flv (stream #2) shows the following :

    Format: Flash Video
    
Video Codecs: On2 VP6
    
Audio Codecs: Nellymoser

    Any help would be appreciated in resolving this error.

    Update #1

    I have tried splitting the filter graph into two as requested but I receive the same errors :

    Error while filtering: Cannot allocate memory
    
Failed to inject frame into filter network: Cannot allocate memory
    
Error while processing the decoded data for stream #1:1

    However, I did discover something, if I try to bring up stream #1:1 mentioned above (video1b.flv) using VLC Media Player, I can hear the audio file but I cannot see the video and I receive this error message :

    No suitable decoder module:
    
VLC Does not support the audio or video format "undf".
    
Unfortunately there is no way for you to fix this.

    Update #2

    The above error was with the 32bit version of ffmpeg. I switched to a 64 bit machine and am now running the 64 bit ffmpeg version ffmpeg-20180605-b748772-win64-static.

    Now I no longer receive the following error :

    Error while processing the decoded data for stream #1:1

    But, I have a new error. About an hour into running it, I receive the following error :

    av_interleaved_write_frame(): Cannot allocate memory
    
[mp4 @ 000000000433f080] Application provided duration: 3327365388930198318
    
/ timestamp: 17178820096 is out of range for mov/mp4 format

    I also tried first remuxing all the files as suggested and using those files to run the above command and that did not help. I still get the same error.

  • Ffmpeg only saves files but don't re transmit the stream in node

    3 juin 2018, par sonseiya

    am using ffmpeg to get a video stream, save a file and re send to another machine.

    Basicaly i am using the following command :

    ffmpeg -timeout 60 -i udp://192.168.0.12:3000 -c:v libx264 -c:a mp2 
    
-f tee -map 0:v -map 0:a 
    
"[onfail=ignore]6067_20180602_214828.ts|[f=mpegts]udp://192.168.0.12:4000"

    The file is being generating perfectly, my problem is that i am not getting the udp stream when i try to test it using vlc.

    Did i miss something ?

    I get the command from : https://ffmpeg.org/ffmpeg-formats.html#tee

    Regards

  • Qt 5.2 / OpenCV 2.4.8 - Can’t open video files via VideoCapture

    21 février 2014, par Zamahra

    I have a big problem that i can’t solve by myself. OpenCV itself works fine, but i’m not able to load videos. Here’s my code :

    PRO- File

    QT       += core gui
    

    
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
    

    
TARGET = videoredux
    
TEMPLATE = app
    

    
INCLUDEPATH += C:/OpenCV/opencv_bin/install/include
    
LIBS += -LC:\\OpenCV\\opencv_bin\\bin \
    
    libopencv_core248d \
    
    libopencv_highgui248d \
    
    libopencv_imgproc248d \
    
    libopencv_features2d248d \
    
    libopencv_calib3d248d \
    
    libopencv_video248d \
    

    

    
SOURCES += main.cpp\
    
        mainwindow.cpp
    

    
HEADERS  += mainwindow.h
    

    
FORMS    += mainwindow.ui

    and the MainWindow Class :

    #include "mainwindow.h"
    
#include "ui_mainwindow.h"
    
#include <qfiledialog>
    
#include <iostream>
    
#include 
    
#include <opencv2></opencv2>core/core.hpp>
    
#include <opencv2></opencv2>highgui/highgui.hpp>
    
#include <opencv2></opencv2>imgproc/imgproc.hpp>
    
#include <opencv></opencv>cv.h>
    

    

    
MainWindow::MainWindow(QWidget *parent) :
    
QMainWindow(parent),
    
ui(new Ui::MainWindow)
    
{
    
    ui->setupUi(this);
    
    ui->videoStatusLabel->setText("Kein Video geladen.");
    

    
    // SIGNALS &amp; SLOTS
    

    
    QObject::connect(ui->chooseVideoButton,SIGNAL(clicked()),
    
                 this,SLOT(chooseVideo()));
    
    QObject::connect(ui->startButton,SIGNAL(clicked()),
    
                 this,SLOT(startProcess()));
    

    
}
    

    
void MainWindow::chooseVideo(){
    

    
    QString fileName = QFileDialog::getOpenFileName(this,
    
         tr("Open Video"), "/home", tr("Video Files (*.avi *.mp4 *.mpeg *.mpg)"));
    
    qDebug() &lt;&lt; "Path:" &lt;&lt; fileName;
    
    ui->videoStatusLabel->setText(fileName);
    
}
    

    
void MainWindow::startProcess(){
    
    QString videoPath = ui->videoStatusLabel->text();
    
    QFileInfo video(videoPath);
    
    if(video.exists()){
    
        const std::string path = videoPath.toUtf8().constData();
    
        cv::VideoCapture capture(path);
    
        cv::Mat frame;
    

    
        if(!capture.isOpened()){
    
            qDebug() &lt;&lt; "Error, video not loaded";
    
        }
    

    
        cv::namedWindow("window",1);
    
        while(true)
    
        {
    
            bool success = capture.read(frame);
    
            if(success == false){
    
                break;
    
            }
    
            cv::imshow("window",frame);
    
            cv::waitKey(20);
    
        }
    
        cv::waitKey(0);
    
    }
    
    else{
    
        qDebug() &lt;&lt; "Error, File doesn&#39;t exist";
    
    }
    
}
    
</iostream></qfiledialog>

    The paths are correct, I tried many different video formats but he never loads the videos. I’m running Qt on a Windows 8 machine and i have “K-Lite Codec Pack 10.2.0 Basic” and ffmpeg installed. The videos are playing properly with my video players. I also tried to copy the .dll to the working directory, searched for opencv dll's in the system32 directory and rebuild OpenCV with mingw on this computer. I know that many people have the same problems, but none of their suggestions solved it. Does anyone know how to solve this problem ?

    Thank you very much !

    Nadine

    ----UPDATE---- I still can't open video files, so I programmed the application on a Windows7 64-Bit system. It worked fine, but when I try to open the application on a Windows8 computer it still can't open the file. It doesn't matter which codecs are installed, because it generally runs on every Windows7 computer and fails on every Windows8 computer.. The same for older OpenCV-Versions. Is there a general problem with OpenCV and Windows8 ?

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