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• Play AAC in SoundManager2 won't start

  27 novembre 2012, par sasa

  I converted audio file MP4 to AAC and then want to play that file in SoundManager2. If I use some software for Windows for convert, everying is fine, audio is playing well. But, on server side when MP4 file is converted to AAC using ffmpeg, file is loaded in SM2, but playing is not started.

  I use this command :

  ffmpeg -i in.mp4 out.aac

  Here is SoundManager2 log :

  -- SoundManager 2: HTML5 support tests (/^(probably|maybe)$/i): mp3: true (preferring flash), mp4: true (preferring flash), ogg: true, wav: true -- soundmanager2.js:1156
  
  -- SoundManager 2 V2.97a.20120916 (AS3/Flash 9) + HTML5 audio, high performance mode, custom (1ms) polling, wmode: transparent, flash debug mode, flashBlock mode -- soundmanager2.js:1156
  
  soundManager::createMovie(): Trying to load /soundmanager/swf/soundmanager2_flash9_debug.swf soundmanager2.js:1156
  
  soundManager::initMovie(): Waiting for ExternalInterface call from Flash... soundmanager2.js:1158
  
  soundManager::externalInterfaceOK() (~0 ms) soundmanager2.js:1158
  
  soundManager::init() soundmanager2.js:1158
  
  soundManager: Attempting JS to Flash call... soundmanager2.js:1158
  
  (Flash): SM2 SWF V2.97a.20120916 (AS3/Flash 9) soundmanager2.js:1158
  
  Flash security sandbox type: remote soundmanager2.js:1158
  
  (Flash): JS to/from Flash OK soundmanager2.js:1158
  
  (Flash): Enabling polling, 1 ms interval soundmanager2.js:1158
  
  -- SoundManager 2 loaded (OK) -- soundmanager2.js:1156
  
  soundManager: Firing 1 onready() item soundmanager2.js:1158
  
  threeSixtyPlayer.init() soundmanager2.js:1158
  
  threeSixtyPlayer.init(): Found 1 relevant items. soundmanager2.js:1158
  
  handleClick() soundmanager2.js:1158
  
  soundManager.createSound(): ui360Sound0 (http://[private url]/out.aac?v=1350309261) soundmanager2.js:1156
  
  soundManager.createSound(): Enabling usePolicyFile for data access soundmanager2.js:1158
  
  SMSound() merged options: {
  
   id: ui360Sound0, 
  
   url: http://[private url]/out.aac?v=1350309261, 
  
   onplay: { pl.removeClass(this._360data.oUIBox,this._360data.className); t... }, 
  
   onstop: { pl.removeClass(this._360data.oUIBox,this._360data.className); t... }, 
  
   onpause: { pl.removeClass(this._360data.oUIBox,this._360data.className); t... }, 
  
   onresume: { pl.removeClass(this._360data.oUIBox,this._360data.className); t... }, 
  
   onfinish: { var nextLink; pl.removeClass(this._360data.oUIBox,this._360data... }, 
  
   onbufferchange: { if (this.isBuffering) { pl.addClass(this._360data.oUIBox,pl.css... }, 
  
   whileloading: { if (this.paused) { self.updatePlaying.apply(this); } }... }, 
  
   whileplaying: { self.updatePlaying.apply(this); this._360data.fps++; }... }, 
  
   useWaveformData: false, 
  
   useEQData: false, 
  
   usePeakData: true, 
  
   autoLoad: false, 
  
   autoPlay: false, 
  
   loops: 1, 
  
   multiShot: true, 
  
   multiShotEvents: false, 
  
   pan: 0, 
  
   stream: true, 
  
   usePolicyFile: true, 
  
   volume: 50, 
  
   useMovieStar: false, 
  
   isMovieStar: false, 
  
   bufferTime: 3
  
  } soundmanager2.js:1158
  
  (Flash): SoundManager2_SMSound_AS3: Got duration: 0, autoPlay: false soundmanager2.js:1158
  
  SMSound.play(): Attempting to load "ui360Sound0" soundmanager2.js:1156
  
  SMSound.load(): http://[private url]/out.aac?v=1350309261 soundmanager2.js:1156
  
  SMSound.play(): "ui360Sound0" is starting to play soundmanager2.js:1158
  
  fanOut: ui360Sound0: http://[private url]/out.aac?v=1350309261 soundmanager2.js:1158
  
  (Flash): start (ui360Sound0): 0 soundmanager2.js:1158
  
  SMSound._onbufferchange(): 1 soundmanager2.js:1158
  
  SMSound._onbufferchange(): 0 soundmanager2.js:1158
  
  SMSound._onload(): "ui360Sound0" loaded. 

  What can be a problem ?

• How can I use ffmpeg inside my wpf application

  6 avril 2022, par Kanoto

  I'm having some issue about using ffmpeg in my wpf project, I dunno why but it seems to not work inside msvc.

  


  ErrorLoadFFmpeg

  


  But it seems to work just fine in cmd.
I'm trying to use it in GoProControl project.
I already added path, $PATH with "C :\FFmpeg" and "C :\FFmpeg\bin" as well.
I have no idea why it doesn't work.

  


  using Newtonsoft.Json.Linq;&#xA;using System;&#xA;using System.Collections.Generic;&#xA;using System.Diagnostics;&#xA;using System.Linq;&#xA;using System.Net;&#xA;using System.Net.Sockets;&#xA;using System.Text;&#xA;using System.Threading.Tasks;&#xA;using System.Windows;&#xA;using System.Windows.Controls;&#xA;using System.Windows.Data;&#xA;using System.Windows.Documents;&#xA;using System.Windows.Input;&#xA;using System.Windows.Media;&#xA;using System.Windows.Media.Imaging;&#xA;using System.Windows.Navigation;&#xA;using System.Windows.Shapes;&#xA;&#xA;namespace GoProControl&#xA;{&#xA;    /// <summary>&#xA;    /// Logique d&#x27;interaction pour MainWindow.xaml&#xA;    /// </summary>&#xA;    public partial class GoProWindowsControl : Window&#xA;    {&#xA;        bool VERBOSE = false;&#xA;&#xA;        //Sends Record command to GoPro Camera, must be in Video mode!&#xA;        bool RECORD = true;&#xA;&#xA;        //Converts GoPro camera live stream via FFMPEG to a local source, must be in Video mode!&#xA;        bool STREAM = false;&#xA;&#xA;        //Saves the feed to a custom location&#xA;        bool SAVE = false;&#xA;&#xA;        private bool m_status;&#xA;&#xA;        WebClient myWebClient;&#xA;&#xA;&#xA;        public GoProWindowsControl()&#xA;        {&#xA;            myWebClient = new WebClient();&#xA;            m_status = false;&#xA;            InitializeComponent();&#xA;&#xA;            InitializeMainWindow();&#xA;&#xA;            InitializeFFME();&#xA;        }&#xA;&#xA;        private void InitializeMainWindow()&#xA;        {&#xA;&#xA;            PreviewKeyDown &#x2B;= OnWindowKeyDown;&#xA;&#xA;        }&#xA;&#xA;        private void InitializeFFME()&#xA;        {&#xA;            Unosquare.FFME.Library.FFmpegDirectory = @"C:\FFmpeg";&#xA;            if (VERBOSE == false)&#xA;                Unosquare.FFME.Library.FFmpegLogLevel = FFmpeg.AutoGen.ffmpeg.AV_LOG_PANIC;&#xA;            else&#xA;                Unosquare.FFME.Library.FFmpegLogLevel = FFmpeg.AutoGen.ffmpeg.AV_LOG_ERROR;&#xA;            Unosquare.FFME.Library.FFmpegLoadModeFlags = FFmpeg.AutoGen.FFmpegLoadMode.VideoOnly;&#xA;&#xA;            Unosquare.FFME.Library.LoadFFmpeg();&#xA;        }&#xA;

  


• How to create a MPEG4 file using FFMPEG : avcodec_send_frame() indicates error 2

  15 janvier 2024, par Summit

  I am trying to create a MPEG4 file using FFMPEG , the initialize function is successful but the :writeFrame(unsigned char* imageData) function return error code of 2 at this line

  


  if (avcodec_send_frame(m_CodecContext, frame) < 0)


  


  This is my code.

  


  FFmpegVideoWriter::FFmpegVideoWriter()
    : m_Initialized(false)
{

}

FFmpegVideoWriter::~FFmpegVideoWriter()
{
    //dispose();
}

bool FFmpegVideoWriter::init(const std::string& filename, int width, int height, int fps)
{
    if (m_Initialized){
        return false;
    }

    avcodec_register_all();
    m_Codec = avcodec_find_encoder(AV_CODEC_ID_MPEG4);
    if (!m_Codec) {
        qDebug() << "Codec not found";
        return false;
    }

    m_CodecContext = avcodec_alloc_context3(m_Codec);
    m_CodecContext->bit_rate = 4000000;
    m_CodecContext->width = width;
    m_CodecContext->height = height;
    m_CodecContext->time_base = { 1, fps };
    m_CodecContext->framerate = { fps, 1 };
    m_CodecContext->gop_size = 10;
    m_CodecContext->max_b_frames = 1;
    m_CodecContext->pix_fmt = AV_PIX_FMT_YUV420P;

    if (avcodec_open2(m_CodecContext, m_Codec, nullptr) < 0) {
        qDebug() << "Could not open the codec";
        return false;
    }

    frame = av_frame_alloc();
    if (!frame) {
        qDebug() << "Could not allocate the frame";
        return false;
    }

    frame->format = m_CodecContext->pix_fmt;
    frame->width = m_CodecContext->width;
    frame->height = m_CodecContext->height;

    if (av_frame_get_buffer(frame, 32) < 0) {
        qDebug() << "Could not allocate the video frame data";
        return false;
    }

    struct stat buffer;
    if (stat(filename.c_str(), &buffer) == 0) {
        // File exists , ask for overwrite confirmation
        QMessageBox msgBox;
        msgBox.setText("The file already exists");
        msgBox.setInformativeText("Do you want to overwrite it?");
        msgBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
        msgBox.setDefaultButton(QMessageBox::Yes);

        int ret = msgBox.exec();
        if (ret == QMessageBox::No) {
            // User chose not to overwrite , return false
            return false;
        }
        // If Yes , Proceed further
    }

    file = fopen(filename.c_str(), "wb");
    if (!file) {
        qDebug() << "Could not open or crate output file";
        return false;
    }
    else
        qDebug() << "File Opened";

    av_init_packet(&m_Pkt);
    m_Pkt.data = nullptr;
    m_Pkt.size = 0;
    m_Initialized = true;
    qDebug() << "AVI WRITER IS INITIALIZED";
    return true;
}

bool FFmpegVideoWriter::writeFrame(unsigned char* imageData) {
    qDebug() << "Making frame writable "  <<   av_frame_make_writable(frame);
    // Input image is in RGBA format
    cv::Mat rgbaFrame(m_CodecContext->height, m_CodecContext->width, CV_8UC4, imageData);
    cv::Mat yuvFrame;
    cv::cvtColor(rgbaFrame, yuvFrame, cv::COLOR_RGBA2YUV_I420);

    // Fill the frame data
/*  for (int i = 0; i < m_CodecContext->height; ++i) {
        std::memcpy(frame->data[0] + i * frame->linesize[0], yuvFrame.data + i * yuvFrame.step, m_CodecContext->width);
    }*/

    // Fill the frame data with red color
    for (int i = 0; i < m_CodecContext->height; ++i) {
        // Assuming YUV format, set U and V components to 128 (midpoint for red color)
        std::memset(frame->data[0] + i * frame->linesize[0], 255, m_CodecContext->width); // Y (luma)
        std::memset(frame->data[1] + i / 2 * frame->linesize[1], 128, m_CodecContext->width / 2); // U (chroma)
        std::memset(frame->data[2] + i / 2 * frame->linesize[2], 128, m_CodecContext->width / 2); // V (chroma)
    }

    frame->pts++;

    if (avcodec_send_frame(m_CodecContext, frame) < 0) {
        char errbuf[AV_ERROR_MAX_STRING_SIZE];  // Buffer to store error message
        av_strerror(errno, errbuf, AV_ERROR_MAX_STRING_SIZE);

        qDebug() << "Error: Could not send video frame for encoding - " << QString::fromUtf8(errbuf);
        qDebug() << "Could not send video frame for encoding";
        return false;
    }

    while (avcodec_receive_packet(m_CodecContext, &m_Pkt) == 0) {
        fwrite(m_Pkt.data, 1, m_Pkt.size, file);
        av_packet_unref(&m_Pkt);
    }

    return true;
}

void FFmpegVideoWriter::dispose() {
    if (m_Initialized) {
        avcodec_free_context(&m_CodecContext);
        av_frame_free(&frame);
        fclose(file);
        m_Initialized = false;
    }
}

bool FFmpegVideoWriter::IsInited() const
{
    return m_Initialized;
}