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Médias (2)
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Core Media Video
4 avril 2013, par
Mis à jour : Juin 2013
Langue : français
Type : Video
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Video d’abeille en portrait
14 mai 2011, par
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (95)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 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, parMultilang 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. -
Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...)
Sur d’autres sites (9566)
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How to create thumbnails image or get metadat from videos url ? [closed]
7 septembre 2021, par M KasesangI can create video thumbnails and get metadat from my videos path in my website via ffmpeg and php.


but how can I create thumbnails or get metadat from videos stored in my dl host or any url of videos like "dl.example.com/video.mp4" ?


Thnx in advance.


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Why there is no AVFrame->data[2] data when decode h264 by ffmpeg use "h264_cuvid"
27 juillet 2017, par Wu NLenv : ubuntu 16.04 64 bit ; ffmpeg 3.3.2 build whih cuda cuvid libnpp...
use ffmpeg cmd :ffmpeg -vsync 0 -c:v h264_cuvid -i test.264 -f rawvideo test.yuvworks fine, the generated yuv file is ok.
BUT When I decode this 264 file by my code use ’h264_cuvid’ decoder, something problem happens, this is my code :#include
#define __STDC_CONSTANT_MACROS
#ifdef _WIN32
//Windows
extern "C"
{
#include "libavcodec/avcodec.h"
};
#else
//Linux...
#ifdef __cplusplus
extern "C"
{
#endif
#include <libavcodec></libavcodec>avcodec.h>
#ifdef __cplusplus
};
#endif
#endif
//test different codec
#define TEST_H264 1
#define TEST_HEVC 0
int main(int argc, char* argv[])
{
AVCodec *pCodec;
AVCodecContext *pCodecCtx= NULL;
AVCodecParserContext *pCodecParserCtx=NULL;
FILE *fp_in;
FILE *fp_out;
AVFrame *pFrame;
const int in_buffer_size=4096;
unsigned char in_buffer[in_buffer_size + FF_INPUT_BUFFER_PADDING_SIZE]= {0};
unsigned char *cur_ptr;
int cur_size;
AVPacket packet;
int ret, got_picture;
#if TEST_HEVC
enum AVCodecID codec_id=AV_CODEC_ID_HEVC;
char filepath_in[]="bigbuckbunny_480x272.hevc";
#elif TEST_H264
AVCodecID codec_id=AV_CODEC_ID_H264;
char filepath_in[]="2_60_265to264.264";
#else
AVCodecID codec_id=AV_CODEC_ID_MPEG2VIDEO;
char filepath_in[]="bigbuckbunny_480x272.m2v";
#endif
char filepath_out[]="mainSend.yuv";
int first_time=1;
//av_log_set_level(AV_LOG_DEBUG);
avcodec_register_all();
// pCodec = avcodec_find_decoder(codec_id);
pCodec = avcodec_find_decoder_by_name("h264_cuvid");
if (!pCodec)
{
printf("Codec not found\n");
return -1;
}
pCodecCtx = avcodec_alloc_context3(pCodec);
if (!pCodecCtx)
{
printf("Could not allocate video codec context\n");
return -1;
}
pCodecParserCtx=av_parser_init(pCodec->id);
if (!pCodecParserCtx)
{
printf("Could not allocate video parser context\n");
return -1;
}
if (avcodec_open2(pCodecCtx, pCodec, NULL) < 0)
{
printf("Could not open codec\n");
return -1;
}
//Input File
fp_in = fopen(filepath_in, "rb");
if (!fp_in)
{
printf("Could not open input stream\n");
return -1;
}
//Output File
fp_out = fopen(filepath_out, "wb");
if (!fp_out)
{
printf("Could not open output YUV file\n");
return -1;
}
pFrame = av_frame_alloc();
av_init_packet(&packet);
while (1)
{
cur_size = fread(in_buffer, 1, in_buffer_size, fp_in);
if (cur_size == 0)
break;
cur_ptr=in_buffer;
while (cur_size>0)
{
int len = av_parser_parse2(
pCodecParserCtx, pCodecCtx,
&packet.data, &packet.size,
cur_ptr, cur_size,
AV_NOPTS_VALUE, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
cur_ptr += len;
cur_size -= len;
if(packet.size==0)
continue;
//Some Info from AVCodecParserContext
printf("[Packet]Size:%6d\t",packet.size);
switch(pCodecParserCtx->pict_type)
{
case AV_PICTURE_TYPE_I:
printf("Type:I\tNumber:%4d\n",pCodecParserCtx->output_picture_number);
break;
case AV_PICTURE_TYPE_P:
printf("Type:P\t");
break;
case AV_PICTURE_TYPE_B:
printf("Type:B\t");
break;
default:
printf("Type:Other\t");
break;
}
printf("Number:%4d\n",pCodecParserCtx->output_picture_number);
AVFrame* myFrame = av_frame_alloc();
ret = avcodec_decode_video2(pCodecCtx, myFrame, &got_picture, &packet);
if (ret < 0)
{
printf("Decode Error.\n");
return ret;
}
if (got_picture)
{
if(first_time)
{
printf("\nCodec Full Name:%s\n",pCodecCtx->codec->long_name);
printf("width:%d\nheight:%d\n\n",pCodecCtx->width,pCodecCtx->height);
first_time=0;
}
//Y, U, V
for(int i=0; iheight; i++)
{
fwrite(myFrame->data[0]+myFrag-g>linesize[0]*i,1,myFrame->width,fp_out);
}
for(int i=0; iheight/2; i++)
{
fwrite(myFrame->data[1]+myFrag-g>linesize[1]*i,1,myFrame->width/2,fp_out);
}
for(int i=0; iheight/2; i++)
{
fwrite(myFrame->data[2]+myFrag-g>linesize[2]*i,1,myFrame->width/2,fp_out);
}
// printf("pframe's width height %d %d\t key frame %d\n",myFrame->width,myFrame->height,myFrame->key_frame);
printf("Succeed to decode 1 frame!\n");
av_frame_free(&myFrame);
}
}
}
fclose(fp_in);
fclose(fp_out);
av_parser_close(pCodecParserCtx);
av_frame_free(&pFrame);
avcodec_close(pCodecCtx);
av_free(pCodecCtx);
return 0;
}In this demo code, I call h264_cuvid by
vcodec_find_decoder_by_name("h264_cuvid");
BUT the code crash atfwrite(myFrame->data[2]+myFrag-g>linesize[2]*i,1,myFrame->width/2,fp_out);
So after debug with codeblocks, I found that there is no data in myFrame->data[2] codeblocks watching windowAny suggestion ? thanks !
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About Ffmpeg,Console show 'frame=0 fps=0.0 q=0.0 Lsize=0kB time=00:00:00.00' No data pull&push
9 janvier 2019, par LusI want to use Ffmpeg to pull&push video stream from HLS to RTMP.at first it’s normal,but when I open more,it’s run normally ,but no video data pull&push
Environment：Windows64+Ngg-§rtmp-static+Ffmpeg-static+Java1.8
It’s useless,even if I restart rtmp-server.
ffmpeg -i xxx/live.m3u8 -vcodec h264-s 720*480 -an -f flv -y rtmp://xxxThe first few video streams is normal,but when I open more streams (5+),
it run normally,but no data pull.like this.2019-01-08 10:58:15.658 INFO ->frame=0 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=720 speed= 0x
2019-01-08 10:58:16.598 INFO ->[http @ 0000015efc568280] Opening 'xxx/1/live.m3u8' for reading
2019-01-08 10:58:16.984 INFO ->[http @ 0000015efb1200c0] Opening 'xxx/1/seghik30.ts' for reading
2019-01-08 10:58:17.083 INFO ->frame= 0 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=744 speed= 0x
2019-01-08 10:58:18.033 INFO ->[http @ 0000015efc568280] Opening 'xxx/1/live.m3u8' for reading
2019-01-08 10:58:18.146 INFO ->[http @ 0000015efb1200c0] Opening 'xxx/1/seghik31.ts' for reading
2019-01-08 10:58:18.267 INFO ->frame= 0 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=770 speed= 0x
2019-01-08 10:58:19.220 INFO ->[http @ 0000015efc568280] Opening 'xxx/1/live.m3u8' for reading
2019-01-08 10:58:19.317 INFO ->[http @ 0000015efb1200c0] Opening 'xxx/1/seghik32.ts' for reading
2019-01-08 10:58:19.415 INFO ->[http @ 0000015efb138600] Opening 'xxx/1/seghik33.ts' for reading
2019-01-08 10:58:19.494 INFO ->frame= 0 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=795 speed= 0x
2019-01-08 10:58:20.375 INFO ->[http @ 0000015efc568280] Opening 'xxx/1/live.m3u8' for reading
2019-01-08 10:58:20.486 INFO ->[http @ 0000015efb138600] Opening 'xxx/1/seghik34.ts' for reading
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