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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 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.
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    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
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Sur d’autres sites (11328)

  • converting images to mp4 using ffmpeg on iphone

    29 novembre 2011, par user633901

    Up 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

  • How to call ffmpeg from Activity ?

    11 juin 2013, par Vishwas

    I 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.

  • Add 2 pictures to video with durations ? [duplicate]

    24 juin 2013, par jesper

    This 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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    Pos:   4.1s    103f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [140:0]
    Pos:   4.2s    104f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [138:0]
    Pos:   4.2s    105f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [137:0]
    Pos:   4.2s    106f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [136:0]
    Pos:   4.3s    107f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [135:0]
    Pos:   4.3s    108f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [133:0]
    Pos:   4.4s    109f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [132:0]
    Pos:   4.4s    110f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [131:0]
    Pos:   4.4s    111f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [130:0]
    Pos:   4.5s    112f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [129:0]
    Pos:   4.5s    113f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [128:0]
    Pos:   4.6s    114f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [127:0]
    Pos:   4.6s    115f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [126:0]
    Pos:   4.6s    116f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [124:0]
    Pos:   4.7s    117f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [123:0]
    Pos:   4.7s    118f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [122:0]
    Pos:   4.8s    119f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [121:0]
    Pos:   4.8s    120f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [120:0]
    Pos:   4.8s    121f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [119:0]
    Pos:   4.9s    122f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [119:0]
    Pos:   4.9s    123f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [118:0]
    Pos:   5.0s    124f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [117:0]
    Pos:   5.0s    125f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [116:0]
    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...