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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
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Autres articles (60)
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Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...) -
Demande de création d’un canal
12 mars 2010, parEn fonction de la configuration de la plateforme, l’utilisateur peu avoir à sa disposition deux méthodes différentes de demande de création de canal. La première est au moment de son inscription, la seconde, après son inscription en remplissant un formulaire de demande.
Les deux manières demandent les mêmes choses fonctionnent à peu près de la même manière, le futur utilisateur doit remplir une série de champ de formulaire permettant tout d’abord aux administrateurs d’avoir des informations quant à (...) -
Mediabox : ouvrir les images dans l’espace maximal pour l’utilisateur
8 février 2011, parLa visualisation des images est restreinte par la largeur accordée par le design du site (dépendant du thème utilisé). Elles sont donc visibles sous un format réduit. Afin de profiter de l’ensemble de la place disponible sur l’écran de l’utilisateur, il est possible d’ajouter une fonctionnalité d’affichage de l’image dans une boite multimedia apparaissant au dessus du reste du contenu.
Pour ce faire il est nécessaire d’installer le plugin "Mediabox".
Configuration de la boite multimédia
Dès (...)
Sur d’autres sites (6653)
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Add 2 pictures to video with durations ? [duplicate]
24 juin 2013, par jesperThis question already has an answer here :
I am trying to add 2 different images into a video with ffmpeg.
image1.jpg should show the first 10 seconds of the movie and youtubeLOL.png should show the next 6 minutes of the video.
So the command should tell us also to repeat the pictures to get a length for 6 minutes and 10 seconds. How can i do this ? I have tried this :
(It's not even working)
passthru("ffmpeg -f image2 -loop 1 -vframes 100 -i /home/psafari/public_html/youtube_images/movie_" . $id . ".jpg -vcodec mpeg4 /home/psafari/public_html/youtube_videos/movie_" . time().".avi");Here is output :
FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6) configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable-libdc1394 --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab libavutil 50.15. 1 / 50.15. 1 libavcodec 52.72. 2 / 52.72. 2 libavformat 52.64. 2 / 52.64. 2 libavdevice 52. 2. 0 / 52. 2. 0 libavfilter 1.19. 0 / 1.19. 0 libswscale 0.11. 0 / 0.11. 0 libpostproc 51. 2. 0 / 51. 2. 0
Invalid value '1' for option 'loop'output memcode
MEncoder SVN-r31628-4.4.6 (C) 2000-2010 MPlayer Team
get_path("config") problem
success: format: 0 data: 0x0 - 0x1251b
libavformat file format detected.
[lavf] stream 0: video (h264), -vid 0
VIDEO: [H264] 540x800 24bpp 25.000 fps 116.3 kbps (14.2 kbyte/s)
[V] filefmt:44 fourcc:0x34363248 size:540x800 fps:25.000 ftime:=0.0400
videocodec: framecopy (540x800 24bpp fourcc=34363248)
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Pos: 0.0s 1f (100%) 0.00fps Trem: 0min 0mb A-V:0.000 [0:0]
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success: format: 0 data: 0x0 - 0x9daf8
libavformat file format detected.
[lavf] stream 0: video (h264), -vid 0
VIDEO: [H264] 640x400 24bpp 25.000 fps 21.8 kbps ( 2.7 kbyte/s)
[V] filefmt:44 fourcc:0x34363248 size:640x400 fps:25.000 ftime:=0.0400
videocodec: framecopy (540x800 24bpp fourcc=34363248)
videocodec: framecopy (640x400 24bpp fourcc=34363248)
All video files must have identical fps, resolution, and codec for -ovc copy.
Exiting... -
How to call ffmpeg from Activity ?
11 juin 2013, par VishwasI want to use ffmpeg to change the resolution of video.
However, i don't know how can i call ffmpeg executable from activity in android.
I am using eclipse and Windows 7
Any help will be appreciated.
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converting images to mp4 using ffmpeg on iphone
29 novembre 2011, par user633901Up till now, i can create mpeg1 but with no luck for mp4.Maybe we can talk and share information.Someone told me that i have to set some flags for using mp4.But i am stuck at using it...
following is the working code :
av_register_all();
printf("Video encoding\n");
/// find the mpeg video encoder
//codec=avcodec_find_encoder(CODEC_ID_MPEG1VIDEO);
codec = avcodec_find_encoder(CODEC_ID_MPEG4);
if (!codec) {
fprintf(stderr, "codec not found\n");
exit(1);
}
c = avcodec_alloc_context();
picture = avcodec_alloc_frame();
// put sample parameters
c->bit_rate = 400000;
/// resolution must be a multiple of two
c->width = 240;
c->height = 320;
//c->codec_id = fmt->video_codec;
//frames per second
c->time_base= (AVRational){1,25};
c->gop_size = 10; /// emit one intra frame every ten frames
c->max_b_frames=1;
c->pix_fmt =PIX_FMT_YUV420P; // PIX_FMT_YUV420P
if (avcodec_open(c, codec) < 0) {
fprintf(stderr, "could not open codec\n");
exit(1);
}
f = fopen([[NSHomeDirectory() stringByAppendingPathComponent:@"test.mp4"] UTF8String], "wb");
if (!f) {
fprintf(stderr, "could not open %s\n",[@"test.mp4" UTF8String]);
exit(1);
}
// alloc image and output buffer
outbuf_size = 100000;
outbuf = malloc(outbuf_size);
size = c->width * c->height;
#pragma mark -
AVFrame* outpic = avcodec_alloc_frame();
int nbytes = avpicture_get_size(PIX_FMT_YUV420P, c->width, c->height); //this is half size of numbytes.
//create buffer for the output image
uint8_t* outbuffer = (uint8_t*)av_malloc(nbytes);
#pragma mark -
for(k=0;k<1;k++) {
for(i=0;i<25;i++) {
fflush(stdout);
int numBytes = avpicture_get_size(PIX_FMT_RGBA, c->width, c->height);
uint8_t *buffer = (uint8_t *)av_malloc(numBytes*sizeof(uint8_t));
UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"%d.png", i+1]];
CGImageRef newCgImage = [image CGImage];
CGDataProviderRef dataProvider = CGImageGetDataProvider(newCgImage);
CFDataRef bitmapData = CGDataProviderCopyData(dataProvider);
buffer = (uint8_t *)CFDataGetBytePtr(bitmapData);
///////////////////////////
//outbuffer=(uint8_t *)CFDataGetBytePtr(bitmapData);
//////////////////////////
avpicture_fill((AVPicture*)picture, buffer, PIX_FMT_RGBA, c->width, c->height);
avpicture_fill((AVPicture*)outpic, outbuffer, PIX_FMT_YUV420P, c->width, c->height);//does not have image data.
struct SwsContext* fooContext = sws_getContext(c->width, c->height,
PIX_FMT_RGBA,
c->width, c->height,
PIX_FMT_YUV420P,
SWS_FAST_BILINEAR, NULL, NULL, NULL);
//perform the conversion
sws_scale(fooContext, picture->data, picture->linesize, 0, c->height, outpic->data, outpic->linesize);
// Here is where I try to convert to YUV
// encode the image
out_size = avcodec_encode_video(c, outbuf, outbuf_size, outpic);
printf("encoding frame %3d (size=%5d)\n", i, out_size);
fwrite(outbuf, 1, out_size, f);
free(buffer);
buffer = NULL;
}
// get the delayed frames
for(; out_size; i++) {
fflush(stdout);
out_size = avcodec_encode_video(c, outbuf, outbuf_size, NULL);
printf("write frame %3d (size=%5d)\n", i, out_size);
fwrite(outbuf, 1, outbuf_size, f);
}
}
// add sequence end code to have a real mpeg file
outbuf[0] = 0x00;
outbuf[1] = 0x00;
outbuf[2] = 0x01;
outbuf[3] = 0xb7;
fwrite(outbuf, 1, 4, f);
fclose(f);
free(picture_buf);
free(outbuf);
avcodec_close(c);
av_free(c);
av_free(picture);
//av_free(outpic);
printf("\n");my msn:hieeli@hotmail.com
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