
Recherche avancée
Médias (1)
-
Sintel MP4 Surround 5.1 Full
13 mai 2011, par
Mis à jour : Février 2012
Langue : English
Type : Video
Autres articles (41)
-
Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
-
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)
Sur d’autres sites (11591)
-
Access violation reading location 0x000000148965F000
14 février 2014, par user3012914I tried to encode BMP Images, which i get from a buffer and store it as a H264 Video. I am stuck with these errors the arrive randomly and repeatedly
I am using Visual Studio 2012
1) Access violation reading location 0x000000148965F000.
2)Heap corruption
The debug shows the error at this point
struct SwsContext* fooContext = sws_getContext(_imgWidth,_imgHeight,PIX_FMT_RGB32,c->width,c->height,PIX_FMT_YUV420P, SWS_FAST_BILINEAR,NULL,NULL,NULL);
sws_scale(fooContext, inpic->data, inpic->linesize, 0, c->height, outpic->data, outpic->linesize); // converting frame size and formatI guess the read violation happens due to non - pre initialized values. But i couldnt exactly understand why. I have also attached part of the code below
PagedImage *inImg = getUpdatedInputImage(0);
ML_CHECK(inImg);
ImageVector imgExt = inImg->getImageExtent();
if ((imgExt.x == _imgWidth) && (imgExt.y == _imgHeight))
{
if (((imgExt.x % 4) == 0) && ((imgExt.y % 4) == 0))
{
_numFramesFld->setIntValue(_numFramesFld->getIntValue() + 1);
MLFree(unicodeFilename);
// configure header
//BITMAPINFO bitmapInfo
// read out input image and write output image into video
// get input image as an array
void* imgData = NULL;
SubImageBox imageBox(imgExt); // get the whole image
getTile(inImg, imageBox, MLuint8Type, &imgData);
MLuint8* iData = (MLuint8*)imgData;
// since we have only images with
// a z-ext of 1, we can compute the c stride as follows
int cStride = _imgWidth * _imgHeight;
int offset = 0;
MLuint8 r=0, g=0, b=0;
// pointer into the bitmap that is
// used to write images into an video
UCHAR* dst = (UCHAR*)_bits;
for (int y = _imgHeight-1; y >= 0; y--)
{ // reversely scan the image. if y-rows of DIB are set in normal order, no compression will be available.
offset = _imgWidth * y;
for (int x = 0; x < _imgWidth; x++)
{
if (_isGreyValueImage)
{
r = iData[offset + x];
*dst++ = (UCHAR)r;
*dst++ = (UCHAR)r;
*dst++ = (UCHAR)r;
}
else
{
b = iData[offset + x]; // windows bitmap need reverse order: bgr instead of rgb
g = iData[offset + x + cStride ];
r = iData[offset + x + cStride + cStride];
*dst++ = (UCHAR)r;
*dst++ = (UCHAR)g;
*dst++ = (UCHAR)b;
}
// alpha channel in input image is ignored
}
}
outbuf_size = 100000 + c->width*c->height*(32>>3); // allocate output buffer
outbuf = static_cast(malloc(outbuf_size));
fileName_ = (_outputFilenameFld->getStringValue()).c_str();
FILE* f = fopen(fileName_,"wb"); // opening video file for writing
if(!f)
{
_messageFld->setStringValue("Cannot open file");
}
else _messageFld->setStringValue("Opened video file for writing\n");
//for(i=0;i<_numFramesFld->getIntValue();i++)
//{
fflush(stdout);
int nbytes = avpicture_get_size(PIX_FMT_YUV420P, c->width, c->height); // allocating outbuffer
uint8_t* outbuffer = (uint8_t*)av_malloc(nbytes*sizeof(uint8_t));
AVFrame* inpic = avcodec_alloc_frame(); // mandatory frame allocation
AVFrame* outpic = avcodec_alloc_frame();
//outpic->pts = (int64_t)((float)i * (1000.0/((float)(c->time_base.den))) * 90); // setting frame pts
avpicture_fill((AVPicture*)inpic,(uint8_t*)dst, PIX_FMT_RGB32, c->width, c->height); // fill image with input screenshot
avpicture_fill((AVPicture*)outpic, outbuffer, PIX_FMT_YUV420P, c->width, c->height); // clear output picture for buffer copy
av_image_alloc(outpic->data, outpic->linesize, c->width, c->height, c->pix_fmt, 1);
inpic->data[0] += inpic->linesize[0]*(c->height-1); // flipping frame
inpic->linesize[0] = -inpic->linesize[0]; // flipping frame
struct SwsContext* fooContext = sws_getContext(_imgWidth,_imgHeight,PIX_FMT_RGB32,c->width,c->height,PIX_FMT_YUV420P, SWS_FAST_BILINEAR,NULL,NULL,NULL);
sws_scale(fooContext, inpic->data, inpic->linesize, 0, c->height, outpic->data, outpic->linesize); // converting frame size and format
out_size = avcodec_encode_video(c, outbuf, outbuf_size, outpic); // encoding video
_messageFld->setStringValue("Encoding frame %3d (size=%5d)\n");
fwrite(outbuf, 1, out_size, f);
delete [] dst; // freeing memory
av_free(outbuffer);
av_free(inpic);
av_free(outpic);
av_free(fooContext);
DeleteObject(_hbitmap);
for(int Z = 0; Z/ encode the delayed frames
fwrite(outbuf, 1, out_size, f);
}
//outbuf[0] = 0x00;
//outbuf[1] = 0x00; // add sequence end code to have a real mpeg file
//outbuf[2] = 0x01;
//outbuf[3] = 0xb7;
//fwrite(outbuf, 1, 4, f);
fclose(f);
avcodec_close(c); // freeing memory
free(outbuf);
av_free(c);
printf("Closed codec and Freed\n");
}
} -
Updated API docs/demos (loops), revision history, Safari 4.1.5 warning on homepage
21 mai 2010, par Scott Schillerm demo/api/index.html m demo/index.css m doc/download/index.html m doc/index.html m index.html Updated API docs/demos (loops), revision history, Safari 4.1.5 warning on homepage
-
Evolution #3552 (Fermé) : margin-bottom trop grand sur les docs
4 mai 2017, par b bCette marge est là pour éviter que le texte qui va habiller l’image en float ne soit pas collé à celle-ci, donc on va la garder :)