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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • 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.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

Sur d’autres sites (10416)

  • av_read_frame() in ffmpeg returns -5 while receiving UDP data [closed]

    26 février 2024, par zttang

    I'm working on an app which is using ffmpeg lib. There is a living source keep sending TS stream thru udp. Then I allocated a thread use ffmpeg receive the TS packets. the code for this thread is like :

    


    void* av_source_thread(void *data) {
    char udp_url[50];
    snprintf(udp_url, sizeof(udp_url), "udp://127.0.0.1:12345");
    AVDictionary* options = NULL;
    av_dict_set(&options, "timeout", "500000", 0);  // timeout=0.5s
    av_dict_set(&options, "overrun_nonfatal", "1", 0);
    av_dict_set(&options, "fifo_size", "278876", 0);  //50MB

    AVFormatContext *ffmpeg_source = avformat_alloc_context();
    while (running) {
        if (avformat_open_input(&ffmpeg_source, udp_url, NULL, &options) != 0) {
            continue;
        } else {
            break;
        }
    }
    // Some code fill codec type and alloc context here

    av_format_inject_global_side_data(ffmpeg_source);
    AVPacket *packet = av_packet_alloc();
    while (running) {
        ret = av_read_frame(ffmpeg_source, packet);
        if (ret < 0) {
            char errbuf[AV_ERROR_MAX_STRING_SIZE];
            av_strerror(ret, errbuf, AV_ERROR_MAX_STRING_SIZE);
            usleep(10000);
            log("av_read_frame failed, Exit, %s, %d", errbuf, ret);
            continue;
        }
        putPkt2Q(packet);  
    }
    av_packet_free(&packet);
    avformat_close_input(&ffmpeg_source);
    av_dict_free(&options);
    return nullptr;
}


    


    Then the packets will be sent to Q and other thread will process them. but when I run the program, the av_read_frame will return -5(I/O error) from time to time. and once it returned -5, it can not recover unless I restart this thread.

    


    since this is a real time source, so lost some frames are acceptable, I just want to know how to avoid this kind of issue or how to recover without restart the whole thread. I tried to increase the fifo_size in options, but it does not work.

    


  • avcodec_decode_video2 RETURNS THE VALUE -1094995529 in the threaded function

    2 février 2016, par Whoami

    I am developing rtsp streaming player, and followed the below approach.

    1) Read packet, decode, display -> works perfectly.

    while (1) {
    
    if ( av_read_frame(pFormatCtx, &packet) >= 0) {
    
        if (packet.stream_index == videoStream) {
    
            retDecoder = avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished, &packet);
    
            if  ( retDecoder <= 0)
    
                LOGD (" Unable to Decode...retval %d ", retDecoder);
    
            if (frameFinished) {
    
            }
    
        }
    
        av_free_packet (&packet);
    
    }
    
}

    Whereas,

    I introduced two threads, one is reading and pushing into the queue and the second one is reading from the queue.

    My problem is while reading the same packet, and decode, i m unable to decode, the return value of the av_video_decode2 is -1094995529.

    Below is the short description of code. Kindly help to solve this issue ?.

    AVPacketList *firstNode=NULL, *lastNode=NULL;
    

    
int pushPacket (AVPacket * pkt)
    
{
    
    AVPacketList *newNode = av_malloc(sizeof(AVPacketList));
    
    newNode->pkt = *pkt;
    
    newNode->next = NULL;
    

    
    SDL_LockMutex (rwMutex);
    

    
    if (lastNode != NULL )  {
    
        lastNode->next = newNode;
    
        lastNode = newNode;
    
    } else {
    
        firstNode = lastNode = newNode;
    
    }
    

    
 SDL_UnlockMutex (rwMutex);
    
}
    

    
int pullPacket ()
    
{
    
    AVPacketList *tempNode;
    
    AVPacket *pkt;
    
    int res=0;
    

    
    SDL_LockMutex (rwMutex);
    
    if ( firstNode != NULL ) {
    
        tempNode = firstNode;
    
        *pkt = tempNode->pkt;
    
        res = avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished, pkt);  // HERE IS THE PROBLEM.
    
        if (frameFinished) {
    
            LOGD (" fRAME DECODED.. %d \n", counter++);
    
        }
    

    
        if (firstNode->next != NULL) {   
    
            firstNode = firstNode->next;
    
        }
    
        else {
    
            firstNode = NULL;
    
            lastNode = NULL;
    
        }
    
        av_free (tempNode);
    
    }
    
}

    In Thread 1 :

    int PacketReader (void *ptr)
    
{
    
    AVPacket pkt1, *rpacket;
    
    rpacket = &pkt1;
    
    while (globalQuit != 0)  {
    
        if ( av_read_frame(pFormatCtx, rpacket) >= 0) {
    
            if (packet.stream_index == videoStream) {
    
                pushPacket (rpacket);
    
            }
    
            av_free_packet(rpacket);
    
        }
    
    }
    
}

    In thread 2 :

    while (1) {
    
   pullPacket ();
    
}

  • av_video_decode2 RETURNS THE VALUE -1094995529 in the threaded function

    24 mai 2014, par Whoami

    I am developing rtsp streaming player, and followed the below approach.

    1) Read packet, decode, display -> works perfectly.

    while (1) {
    
    if ( av_read_frame(pFormatCtx, &packet) >= 0) {
    
        if (packet.stream_index == videoStream) {
    
            retDecoder = avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished, &packet);
    
            if  ( retDecoder <= 0)
    
                LOGD (" Unable to Decode...retval %d ", retDecoder);
    
            if (frameFinished) {
    
            }
    
        }
    
        av_free_packet (&packet);
    
    }
    
}

    Whereas,

    I introduced two threads, one is reading and pushing into the queue and the second one is reading from the queue.

    My problem is while reading the same packet, and decode, i m unable to decode, the return value of the av_video_decode2 is -1094995529.

    Below is the short description of code. Kindly help to solve this issue ?.

    AVPacketList *firstNode=NULL, *lastNode=NULL;
    

    
int pushPacket (AVPacket * pkt)
    
{
    
    AVPacketList *newNode = av_malloc(sizeof(AVPacketList));
    
    newNode->pkt = *pkt;
    
    newNode->next = NULL;
    

    
    SDL_LockMutex (rwMutex);
    

    
    if (lastNode != NULL )  {
    
        lastNode->next = newNode;
    
        lastNode = newNode;
    
    } else {
    
        firstNode = lastNode = newNode;
    
    }
    

    
 SDL_UnlockMutex (rwMutex);
    
}
    

    
int pullPacket ()
    
{
    
    AVPacketList *tempNode;
    
    AVPacket *pkt;
    
    int res=0;
    

    
    SDL_LockMutex (rwMutex);
    
    if ( firstNode != NULL ) {
    
        tempNode = firstNode;
    
        *pkt = tempNode->pkt;
    
        res = avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished, pkt);  // HERE IS THE PROBLEM.
    
        if (frameFinished) {
    
            LOGD (" fRAME DECODED.. %d \n", counter++);
    
        }
    

    
        if (firstNode->next != NULL) {   
    
            firstNode = firstNode->next;
    
        }
    
        else {
    
            firstNode = NULL;
    
            lastNode = NULL;
    
        }
    
        av_free (tempNode);
    
    }
    
}

    In Thread 1 :

    int PacketReader (void *ptr)
    
{
    
    AVPacket pkt1, *rpacket;
    
    rpacket = &pkt1;
    
    while (globalQuit != 0)  {
    
        if ( av_read_frame(pFormatCtx, rpacket) >= 0) {
    
            if (packet.stream_index == videoStream) {
    
                pushPacket (rpacket);
    
            }
    
            av_free_packet(rpacket);
    
        }
    
    }
    
}

    In thread 2 :

    while (1) {
    
   pullPacket ();
    
}

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