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Mise à jour de la version 0.1 vers 0.2
24 juin 2013, parExplications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...) -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Ecrire une actualité
21 juin 2013, parPrésentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
Vous pouvez personnaliser le formulaire de création d’une actualité.
Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...)
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av_video_decode2 RETURNS THE VALUE -1094995529 in the threaded function
24 mai 2014, par WhoamiI 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_decode2is-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 ();
} -
avcodec_decode_video2 RETURNS THE VALUE -1094995529 in the threaded function
2 février 2016, par WhoamiI 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_decode2is-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_read_frame() in ffmpeg returns -5 while receiving UDP data [closed]
26 février 2024, par zttangI'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.


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