Recherche avancée
Autres articles (53)
-
Les vidéos
21 avril 2011, parComme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...) -
La file d’attente de SPIPmotion
28 novembre 2010, parUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...) -
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
Sur d’autres sites (8141)
-
Publish RTMP stream to Red5 Server form iOS camera
7 septembre 2015, par Mohammad AsifPlease look at following code, I have transformed
CMSampleBufferRefintoAV_CODEC_ID_H264but I don’t know how to transmit it to Red5 server.Thanks,
- (void) captureOutput:(AVCaptureOutput *)captureOutput
didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
fromConnection:(AVCaptureConnection *)connection {
//NSLog(@"This is working ....");
// [connection setVideoOrientation: [self deviceOrientation] ];
if( !CMSampleBufferDataIsReady(sampleBuffer) )
{
NSLog( @"sample buffer is not ready. Skipping sample" );
return;
} else {
if (captureOutput == videoOutput) {
CVPixelBufferRef pixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
CVPixelBufferLockBaseAddress(pixelBuffer, 0);
// access the data
float width = CVPixelBufferGetWidth(pixelBuffer);
float height = CVPixelBufferGetHeight(pixelBuffer);
//float bytesPerRow = CVPixelBufferGetBytesPerRowOfPlane(pixelBuffer, 0);
unsigned char *rawPixelBase = (unsigned char *)CVPixelBufferGetBaseAddressOfPlane(pixelBuffer, 0);
// Convert the raw pixel base to h.264 format
if (codec == nil) {
codec = 0;
context = 0;
frame = 0;
fmt = avformat_alloc_context();
//avformat_write_header(fmt, NULL);
codec = avcodec_find_encoder(AV_CODEC_ID_H264);
if (codec == 0) {
NSLog(@"Codec not found!!");
return;
}
context = avcodec_alloc_context3(codec);
if (!context) {
NSLog(@"Context no bueno.");
return;
}
// Bit rate
context->bit_rate = 400000; // HARD CODE
context->bit_rate_tolerance = 10;
// Resolution
// Frames Per Second
context->time_base = (AVRational) {1,25};
context->gop_size = 1;
//context->max_b_frames = 1;
context->width = width;
context->height = height;
context->pix_fmt = PIX_FMT_YUV420P;
// Open the codec
if (avcodec_open2(context, codec, 0) < 0) {
NSLog(@"Unable to open codec");
return;
}
// Create the frame
frame = av_frame_alloc();
if (!frame) {
NSLog(@"Unable to alloc frame");
return;
}
}
context->width = width;
context->height = height;
frame->format = context->pix_fmt;
frame->width = context->width;
frame->height = context->height;
//int nbytes = avpicture_get_size(context->pix_fmt, context->width, context->height);
//uint8_t* outbuffer = (uint8_t*)av_malloc(nbytes);
// AVFrame *pFrameDecoded = avcodec_alloc_frame();
// int num_bytes2 = avpicture_get_size(context->pix_fmt, frame->width, frame->height);
// uint8_t* frame2_buffer2 = (uint8_t *)av_malloc(num_bytes2 * sizeof(uint8_t));
// avpicture_fill((AVPicture*)pFrameDecoded, frame2_buffer2, PIX_FMT_YUVJ422P, 320, 240);
frame->pts = (1.0 / 30) * 60 * count;
avpicture_fill((AVPicture *) frame, rawPixelBase, context->pix_fmt, frame->width, frame->height);
int got_output = 0;
av_init_packet(&packet);
//avcodec_encode_video2(context, &packet, frame, &got_output);
do {
avcodec_encode_video2(context, &packet, frame, &got_output);
//avcodec_decode_video2(context, &packet, NULL, &got_output);
//*... handle received packet*/
if (isFirstPacket) {
[rtmp sendCreateStreamPacket];
isFirstPacket = false;
//av_dump_format(fmt, 0, [kRtmpEP UTF8String], 1);
avformat_alloc_output_context2(&ofmt_ctx, NULL, "flv", [kRtmpEP UTF8String]); //RTMP
}
packet.stream_index = ofmt_ctx->nb_streams;
av_interleaved_write_frame(ofmt_ctx, &packet);
count ++;
//[rtmp write:[NSData dataWithBytes:packet.data length:packet.size]];
} while(got_output);
// Unlock the pixel data
CVPixelBufferUnlockBaseAddress(pixelBuffer, 0);
//[rtmp write:[NSData dataWithBytes:packet.data length:packet.size]];
} else {
}
} } -
FFMPEG compiled binaries don't run on XP using MinGW
10 juin 2015, par Paul KnopfI am trying to build windows executables/dlls for Windows XP, and they are not working. They are the correct architecture. They run fine on my Windows 8 device machine.
I used dependency walker to find missing DLLs, and all were present.
Here are the compiled executables I am trying to run.
I ran the windows build script for ffmpeg.
Here is a
dumpbin /headers ffmpeg.exeMicrosoft (R) COFF/PE Dumper Version 10.00.30319.01
Copyright (C) Microsoft Corporation. All rights reserved.
Dump of file ffmpeg.exe
PE signature found
File Type: EXECUTABLE IMAGE
FILE HEADER VALUES
14C machine (x86)
7 number of sections
51A40 time date stamp Sun Jan 04 15:53:20 1970
0 file pointer to symbol table
0 number of symbols
E0 size of optional header
32F characteristics
Relocations stripped
Executable
Line numbers stripped
Symbols stripped
Application can handle large (>2GB) addresses
32 bit word machine
Debug information stripped
OPTIONAL HEADER VALUES
10B magic # (PE32)
2.25 linker version
41400 size of code
4FA00 size of initialized data
1200 size of uninitialized data
14E0 entry point (004014E0)
1000 base of code
43000 base of data
400000 image base (00400000 to 00456FFF)
1000 section alignment
200 file alignment
4.00 operating system version
1.00 image version
4.00 subsystem version
0 Win32 version
57000 size of image
400 size of headers
597A9 checksum
3 subsystem (Windows CUI)
140 DLL characteristics
Dynamic base
NX compatible
200000 size of stack reserve
1000 size of stack commit
100000 size of heap reserve
1000 size of heap commit
0 loader flags
10 number of directories
0 [ 0] RVA [size] of Export Directory
51000 [ 36F0] RVA [size] of Import Directory
0 [ 0] RVA [size] of Resource Directory
0 [ 0] RVA [size] of Exception Directory
0 [ 0] RVA [size] of Certificates Directory
0 [ 0] RVA [size] of Base Relocation Directory
0 [ 0] RVA [size] of Debug Directory
0 [ 0] RVA [size] of Architecture Directory
0 [ 0] RVA [size] of Global Pointer Directory
56004 [ 18] RVA [size] of Thread Storage Directory
0 [ 0] RVA [size] of Load Configuration Directory
0 [ 0] RVA [size] of Bound Import Directory
517F0 [ 6C4] RVA [size] of Import Address Table Directory
0 [ 0] RVA [size] of Delay Import Directory
0 [ 0] RVA [size] of COM Descriptor Directory
0 [ 0] RVA [size] of Reserved Directory
SECTION HEADER #1
.text name
412BC virtual size
1000 virtual address (00401000 to 004422BB)
41400 size of raw data
400 file pointer to raw data (00000400 to 000417FF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
60500060 flags
Code
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Execute Read
SECTION HEADER #2
.data name
19C virtual size
43000 virtual address (00443000 to 0044319B)
200 size of raw data
41800 file pointer to raw data (00041800 to 000419FF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
C0700040 flags
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Write
SECTION HEADER #3
.rdata name
A7D8 virtual size
44000 virtual address (00444000 to 0044E7D7)
A800 size of raw data
41A00 file pointer to raw data (00041A00 to 0004C1FF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
40700040 flags
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Only
SECTION HEADER #4
.bss name
1200 virtual size
4F000 virtual address (0044F000 to 004501FF)
0 size of raw data
0 file pointer to raw data
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
C0700080 flags
Uninitialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Write
SECTION HEADER #5
.idata name
36F0 virtual size
51000 virtual address (00451000 to 004546EF)
3800 size of raw data
4C200 file pointer to raw data (0004C200 to 0004F9FF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
C0300040 flags
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Write
SECTION HEADER #6
.CRT name
3C virtual size
55000 virtual address (00455000 to 0045503B)
200 size of raw data
4FA00 file pointer to raw data (0004FA00 to 0004FBFF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
C0300040 flags
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Write
SECTION HEADER #7
.tls name
20 virtual size
56000 virtual address (00456000 to 0045601F)
200 size of raw data
4FC00 file pointer to raw data (0004FC00 to 0004FDFF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
C0300040 flags
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Write
Summary
1000 .CRT
2000 .bss
1000 .data
4000 .idata
B000 .rdata
42000 .text
1000 .tlsWhen I attempt to run the executable on XP, it just closes. There is no "missing dll" messages, nor anything in the event viewer.
-
FFMPEG compiled binaries don't run using MinGW
9 juin 2015, par Paul KnopfI am trying to build windows executables/dlls for Windows XP, and they are not working. They are the correct architecture. They run fine on my Windows 8 device machine.
I used dependency walker to find missing DLLs, and all were present.
Here are the compiled executables I am trying to run.
I ran the windows build script for ffmpeg.
Here is a
dumpbin /headers ffmpeg.exeMicrosoft (R) COFF/PE Dumper Version 10.00.30319.01
Copyright (C) Microsoft Corporation. All rights reserved.
Dump of file ffmpeg.exe
PE signature found
File Type: EXECUTABLE IMAGE
FILE HEADER VALUES
14C machine (x86)
7 number of sections
51A40 time date stamp Sun Jan 04 15:53:20 1970
0 file pointer to symbol table
0 number of symbols
E0 size of optional header
32F characteristics
Relocations stripped
Executable
Line numbers stripped
Symbols stripped
Application can handle large (>2GB) addresses
32 bit word machine
Debug information stripped
OPTIONAL HEADER VALUES
10B magic # (PE32)
2.25 linker version
41400 size of code
4FA00 size of initialized data
1200 size of uninitialized data
14E0 entry point (004014E0)
1000 base of code
43000 base of data
400000 image base (00400000 to 00456FFF)
1000 section alignment
200 file alignment
4.00 operating system version
1.00 image version
4.00 subsystem version
0 Win32 version
57000 size of image
400 size of headers
597A9 checksum
3 subsystem (Windows CUI)
140 DLL characteristics
Dynamic base
NX compatible
200000 size of stack reserve
1000 size of stack commit
100000 size of heap reserve
1000 size of heap commit
0 loader flags
10 number of directories
0 [ 0] RVA [size] of Export Directory
51000 [ 36F0] RVA [size] of Import Directory
0 [ 0] RVA [size] of Resource Directory
0 [ 0] RVA [size] of Exception Directory
0 [ 0] RVA [size] of Certificates Directory
0 [ 0] RVA [size] of Base Relocation Directory
0 [ 0] RVA [size] of Debug Directory
0 [ 0] RVA [size] of Architecture Directory
0 [ 0] RVA [size] of Global Pointer Directory
56004 [ 18] RVA [size] of Thread Storage Directory
0 [ 0] RVA [size] of Load Configuration Directory
0 [ 0] RVA [size] of Bound Import Directory
517F0 [ 6C4] RVA [size] of Import Address Table Directory
0 [ 0] RVA [size] of Delay Import Directory
0 [ 0] RVA [size] of COM Descriptor Directory
0 [ 0] RVA [size] of Reserved Directory
SECTION HEADER #1
.text name
412BC virtual size
1000 virtual address (00401000 to 004422BB)
41400 size of raw data
400 file pointer to raw data (00000400 to 000417FF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
60500060 flags
Code
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Execute Read
SECTION HEADER #2
.data name
19C virtual size
43000 virtual address (00443000 to 0044319B)
200 size of raw data
41800 file pointer to raw data (00041800 to 000419FF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
C0700040 flags
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Write
SECTION HEADER #3
.rdata name
A7D8 virtual size
44000 virtual address (00444000 to 0044E7D7)
A800 size of raw data
41A00 file pointer to raw data (00041A00 to 0004C1FF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
40700040 flags
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Only
SECTION HEADER #4
.bss name
1200 virtual size
4F000 virtual address (0044F000 to 004501FF)
0 size of raw data
0 file pointer to raw data
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
C0700080 flags
Uninitialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Write
SECTION HEADER #5
.idata name
36F0 virtual size
51000 virtual address (00451000 to 004546EF)
3800 size of raw data
4C200 file pointer to raw data (0004C200 to 0004F9FF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
C0300040 flags
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Write
SECTION HEADER #6
.CRT name
3C virtual size
55000 virtual address (00455000 to 0045503B)
200 size of raw data
4FA00 file pointer to raw data (0004FA00 to 0004FBFF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
C0300040 flags
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Write
SECTION HEADER #7
.tls name
20 virtual size
56000 virtual address (00456000 to 0045601F)
200 size of raw data
4FC00 file pointer to raw data (0004FC00 to 0004FDFF)
0 file pointer to relocation table
0 file pointer to line numbers
0 number of relocations
0 number of line numbers
C0300040 flags
Initialized Data
RESERVED - UNKNOWN
RESERVED - UNKNOWN
Read Write
Summary
1000 .CRT
2000 .bss
1000 .data
4000 .idata
B000 .rdata
42000 .text
1000 .tlsWhen I attempt to run the executable on XP, it just closes. There is no "missing dll" messages, nor anything in the event viewer.
Syndiquer tout le site
