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    10 avril 2011

    Si vous avez développé une nouvelle extension permettant d’ajouter une ou plusieurs fonctionnalités utiles à MediaSPIP, faites le nous savoir et son intégration dans la distribution officielle sera envisagée.
    Vous pouvez utiliser la liste de discussion de développement afin de le faire savoir ou demander de l’aide quant à la réalisation de ce plugin. MediaSPIP étant basé sur SPIP, il est également possible d’utiliser le liste de discussion SPIP-zone de SPIP pour (...)

  • Ajouter notes et légendes aux images

    7 février 2011, par

    Pour 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
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  • Support de tous types de médias

    10 avril 2011

    Contrairement 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) (...)

Sur d’autres sites (6829)

  • Generating 64kbps audio-only mpegts for HTTP Live segmenter to meet 64kbps audio only requirement

    14 juin 2013, par Pobre

    I am trying to convert our mp4 files into mpeg-ts and segment it into .ts files for my iphone app to play. I am using Carson McDonalds's HTTP-Live-Video-Stream-Segmenter-and-Distributor to do that.

    I got his stuff complied and working correctly. I am currently trying to meet Apple's requirement where I need to provide a baseline 64 kbps audio only stream to my m3u8 playlist.
    Carson doesn't seem to have a profile for that.

    I need to be able to generate 64kbps audio-only stream from mp4, and turn that into mpeg-ts for the segmenter into ts. I am trying to find the right ffmpeg command that will validate without problem using Apple's mediastreamvalidator.

    So far I modified an existing encoding profile to try to achieve 64kbps total :

    ffmpeg -er 4 -i %s -f mpegts -acodec libmp3lame -ar 22050 -ab 32k -s 240x180 -vcodec libx264 -b 16k -flags +loop+mv4 -cmp 256 -partitions +parti4x4+partp8x8+partb8x8 -subq 7 -trellis 1 -refs 5 -coder 0 -me_range 16 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -bt 64k -maxrate 16k -bufsize 16k -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -level 30 -aspect 4:3 -r 10 -g 30 -async 2 - | %s %s %s %s %s

    but then when I try to validate it using mediastreamvalidator, it gives error after few ts :

    Playlist Validation : OK

    Segments :

    sample_cell_4x3_64k-00001.ts :

    WARNING : Media segment exceeds target duration of 10.00 seconds by 1.30 seconds (segment duration is 11.30 seconds)

    sample_cell_4x3_64k-00002.ts :

    WARNING : Media segment exceeds target duration of 10.00 seconds by 1.40 seconds (segment duration is 11.40 seconds)

    ....
    ....

    sample_cell_4x3_64k-00006.ts :

    ERROR : (-1) Unknown video codec : 1836069494 (program 0, track 0)
    ERROR : (-1) failed to parse segment as either an MPEG-2 TS or an ES

    sample_cell_4x3_64k-00007.ts :

    ERROR : (-1) Unknown video codec : 1836069494 (program 0, track 0)
    ERROR : (-1) failed to parse segment as either an MPEG-2 TS or an ES

    ....
    ....
    Average segment duration : 10.26 seconds
    Average segment bitrate : 376797.92 bps
    Average segment structural overhead : 349242.17 bps (92.69 %)

    Is there someway I can generate this correctly with just audio which totals 64kbps and turn it into mpeg-ts ready to be segmented and validated correctly ?

    Am I approaching the problem right ?

  • Codec not found while H.264 encoding using FFMPEG in iOS

    12 juin 2013, par Sukhpal Singh

    I am trying to encode video in h.264 format using FFMpeg in iOS. Actually I am receiving sample buffer from iPhone Camera and then converting it AVFrame and further from AVFrame to H.264 video. But while h.264 encoding if I use :

    codec = avcodec_find_encoder(CODEC_ID_MPEG1VIDEO);

    Then codec is found but if I use :

    codec = avcodec_find_encoder(CODEC_ID_H264);

    Then codec is nil means codec not found. Full code is as below :

    static void encode(AVFrame *picture)
    {
        AVCodec *codec;
        AVCodecContext *c= NULL;
        int i, out_size, size,  outbuf_size;
        uint8_t *outbuf, *picture_buf;

        printf("Video encoding\n");

        /* find the mpeg1 video encoder */

        //avcodec_init() ; // Also tried this but giving warning and not worked
        avcodec_register_all();

        codec = avcodec_find_encoder(CODEC_ID_H264);
        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  = 352;
        c->height = 288;
        /* 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;

        /* open it */
        if (avcodec_open(c, codec) < 0) {
            fprintf(stderr, "could not open codec\n");
            exit(1);
        }

            /* alloc image and output buffer */
        outbuf_size = 100000;
        outbuf = malloc(outbuf_size);
        size = c->width * c->height;
        picture_buf = malloc((size * 3) / 2); /* size for YUV 420 */

        out_size = avcodec_encode_video(c, outbuf, outbuf_size, picture);

        NSLog(@"NSdada===%@",[NSData dataWithBytes:(const void *)outbuf length:out_size]);

        free(picture_buf);
        free(outbuf);

        avcodec_close(c);
        av_free(c);
        av_free(picture);
        printf("\n");
    }
  • ffmpeg error when using non root user

    29 août 2014, par mkern

    I have installed ffmpeg and it works perfect if you are root or using sudo but it errors out when trying to use it as a non-root user. I have performed the same install on a test VPS and it installs without issue so it appears to be isolated to this cPanel server. I haven’t been able to identify why.

    Non-Root :

    > ffmpeg -v debug -i 1.mov 1.avi ffmpeg version N-65949-g0ddb051
    > Copyright (c) 2000-2014 the FFmpeg developers   built on Aug 28 2014
    > 11:39:47 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)  
    > configuration: --enable-gpl --enable-libmp3lame --enable-libvorbis
    > --enable-libvpx --enable-libx264   libavutil      54.  7.100 / 54.  7.100   libavcodec     56.  0.101 / 56.  0.101   libavformat    56.  3.100 / 56.  3.100   libavdevice    56.  0.100 / 56.  0.100   libavfilter     5.  0.103 /  5.  0.103   libswscale      3.  0.100 /
    > 3.  0.100   libswresample   1.  1.100 /  1.  1.100   libpostproc    53.  0.100 / 53.  0.100 Splitting the commandline. Reading option '-v' ... matched as option 'v' (set logging level) with argument 'debug'.
    > Reading option '-i' ... matched as input file with argument '1.mov'.
    > Reading option '1.avi' ... matched as output file. Finished splitting
    > the commandline. Parsing a group of options: global . Applying option
    > v (set logging level) with argument debug. Successfully parsed a group
    > of options. Parsing a group of options: input file 1.mov. Successfully
    > parsed a group of options. Opening an input file: 1.mov.
    > [mov,mp4,m4a,3gp,3g2,mj2 @ 0x348fc20] Format mov,mp4,m4a,3gp,3g2,mj2
    > probed with size=2048 and score=100 [mov,mp4,m4a,3gp,3g2,mj2 @
    > 0x348fc20] ISO: File Type Major Brand: qt   [mov,mp4,m4a,3gp,3g2,mj2 @
    > 0x348fc20] Before avformat_find_stream_info() pos: 698348 bytes
    > read:39602 seeks:1 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x348fc20] All info
    > found [mov,mp4,m4a,3gp,3g2,mj2 @ 0x348fc20] After
    > avformat_find_stream_info() pos: 169190 bytes read:2333362 seeks:67
    > frames:148 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov':  
    > Metadata:
    >     major_brand     : qt  
    >     minor_version   : 0
    >     compatible_brands: qt  
    >     creation_time   : 2014-06-05 04:40:27
    >     model           : iPhone 5
    >     model-eng       : iPhone 5
    >     encoder         : 7.1.1
    >     encoder-eng     : 7.1.1
    >     date            : 2014-06-04T21:40:27-0700
    >     date-eng        : 2014-06-04T21:40:27-0700
    >     make            : Apple
    >     make-eng        : Apple   Duration: 00:00:07.15, start: 0.000023, bitrate: 781 kb/s
    >     Stream #0:0(und), 41, 1/600: Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 480x360, 1/1200, 710 kb/s, 29.09
    > fps, 600 tbr, 600 tbn, 1200 tbc (default)
    >     Metadata:
    >       rotate          : 90
    >       creation_time   : 2014-06-05 04:40:27
    >       handler_name    : Core Media Data Handler
    >       encoder         : H.264
    >     Side data:
    >       displaymatrix: rotation of -90.00 degrees
    >     Stream #0:1(und), 107, 1/44100: Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
    >     Metadata:
    >       creation_time   : 2014-06-05 04:40:27
    >       handler_name    : Core Media Data Handler Successfully opened the file. Parsing a group of options: output file 1.avi. Successfully
    > parsed a group of options. Opening an output file: 1.avi. Successfully
    > opened the file. detected 24 logical cores [graph 0 input from stream
    > 0:0 @ 0x34aa3a0] Setting 'video_size' to value '480x360' [graph 0
    > input from stream 0:0 @ 0x34aa3a0] Setting 'pix_fmt' to value '0'
    > [graph 0 input from stream 0:0 @ 0x34aa3a0] Setting 'time_base' to
    > value '1/600' [graph 0 input from stream 0:0 @ 0x34aa3a0] Setting
    > 'pixel_aspect' to value '0/1' [graph 0 input from stream 0:0 @
    > 0x34aa3a0] Setting 'sws_param' to value 'flags=2' [graph 0 input from
    > stream 0:0 @ 0x34aa3a0] Setting 'frame_rate' to value '320/11' [graph
    > 0 input from stream 0:0 @ 0x34aa3a0] w:480 h:360 pixfmt:yuv420p
    > tb:1/600 fr:320/11 sar:0/1 sws_param:flags=2 [format @ 0x3496b00]
    > compat: called with args=[yuv420p] [format @ 0x3496b00] Setting
    > 'pix_fmts' to value 'yuv420p' [AVFilterGraph @ 0x348f320]
    > query_formats: 4 queried, 3 merged, 0 already done, 0 delayed
    > [AVFilterGraph @ 0x34bbe60] Error initializing threading.
    > [AVFilterGraph @ 0x34bbe60] Error creating filter 'anull' Error
    > opening filters! [AVIOContext @ 0x34967c0] Statistics: 0 seeks, 0
    > writeouts [AVIOContext @ 0x348f1e0] Statistics: 2333362 bytes read, 67
    > seeks

    [AVFilterGraph @ 0x34bbe60] Error initializing threading.
    [AVFilterGraph @ 0x34bbe60] Error creating filter ’anull’ Error
    opening filters !

    As ROOT :

    ffmpeg -v verbose -i 1.mov 1.avi
    ffmpeg version N-65949-g0ddb051 Copyright (c) 2000-2014 the FFmpeg developers
     built on Aug 28 2014 11:39:47 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)
     configuration: --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libx264
     libavutil      54.  7.100 / 54.  7.100
     libavcodec     56.  0.101 / 56.  0.101
     libavformat    56.  3.100 / 56.  3.100
     libavdevice    56.  0.100 / 56.  0.100
     libavfilter     5.  0.103 /  5.  0.103
     libswscale      3.  0.100 /  3.  0.100
     libswresample   1.  1.100 /  1.  1.100
     libpostproc    53.  0.100 / 53.  0.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov':
     Metadata:
       major_brand     : qt  
       minor_version   : 0
       compatible_brands: qt  
       creation_time   : 2014-06-05 04:40:27
       model           : iPhone 5
       model-eng       : iPhone 5
       encoder         : 7.1.1
       encoder-eng     : 7.1.1
       date            : 2014-06-04T21:40:27-0700
       date-eng        : 2014-06-04T21:40:27-0700
       make            : Apple
       make-eng        : Apple
     Duration: 00:00:07.15, start: 0.000023, bitrate: 781 kb/s
       Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 480x360, 710 kb/s, 29.09 fps, 600 tbr, 600 tbn, 1200 tbc (default)
       Metadata:
         rotate          : 90
         creation_time   : 2014-06-05 04:40:27
         handler_name    : Core Media Data Handler
         encoder         : H.264
       Side data:
         displaymatrix: rotation of -90.00 degrees
       Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
       Metadata:
         creation_time   : 2014-06-05 04:40:27
         handler_name    : Core Media Data Handler
    [graph 0 input from stream 0:0 @ 0x27ed3a0] w:480 h:360 pixfmt:yuv420p tb:1/600 fr:320/11 sar:0/1 sws_param:flags=2
    [graph 1 input from stream 0:1 @ 0x2800700] tb:1/44100 samplefmt:fltp samplerate:44100 chlayout:0x4
    Output #0, avi, to '1.avi':
     Metadata:
       major_brand     : qt  
       minor_version   : 0
       compatible_brands: qt  
       make-eng        : Apple
       model           : iPhone 5
       model-eng       : iPhone 5
       make            : Apple
       ISFT            : Lavf56.3.100
       ICRD            : 2014-06-04T21:40:27-0700
       date-eng        : 2014-06-04T21:40:27-0700
       Stream #0:0(und): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 480x360, q=2-31, 200 kb/s, 29.09 fps, 29.09 tbn, 29.09 tbc (default)
       Metadata:
         rotate          : 90
         creation_time   : 2014-06-05 04:40:27
         handler_name    : Core Media Data Handler
         encoder         : Lavc56.0.101 mpeg4
       Stream #0:1(und): Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 44100 Hz, mono, fltp (default)
       Metadata:
         creation_time   : 2014-06-05 04:40:27
         handler_name    : Core Media Data Handler
         encoder         : Lavc56.0.101 libmp3lame
    Stream mapping:
     Stream #0:0 -> #0:0 (h264 (native) -> mpeg4 (native))
     Stream #0:1 -> #0:1 (aac (native) -> mp3 (libmp3lame))
    Press [q] to stop, [?] for help
    *** dropping frame 79 from stream 0 at ts 80
    *** dropping frame 113 from stream 0 at ts 114
    *** dropping frame 145 from stream 0 at ts 146
    *** dropping frame 177 from stream 0 at ts 178
    No more output streams to write to, finishing.
    frame=  204 fps=0.0 q=27.2 Lsize=     348kB time=00:00:07.15 bitrate= 398.4kbits/s dup=0 drop=4    
    video:271kB audio:56kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 6.560985%
    Input file #0 (1.mov):
     Input stream #0:0 (video): 208 packets read (634624 bytes); 208 frames decoded;
     Input stream #0:1 (audio): 308 packets read (56854 bytes); 308 frames decoded (315392 samples);
     Total: 516 packets (691478 bytes) demuxed
    Output file #0 (1.avi):
     Output stream #0:0 (video): 204 frames encoded; 204 packets muxed (276993 bytes);
     Output stream #0:1 (audio): 274 frames encoded (315392 samples); 275 packets muxed (57469 bytes);
     Total: 479 packets (334462 bytes) muxed

    strace and strace -e outputs :
    strace non root :

    579 clone(child_stack=0x7fd3bfd07ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|        CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fd3bfd089d0, tls=0x7fd3bfd08700, child_tidptr=0x7fd3bfd089d0) = 3        2637
       580 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fd3bed07000
       581 mprotect(0x7fd3bed07000, 4096, PROT_NONE) = 0
       582 clone(child_stack=0x7fd3bf506ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|        CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fd3bf5079d0, tls=0x7fd3bf507700, child_tidptr=0x7fd3bf5079d0) = -        1 EAGAIN (Resource temporarily unavailable)
       583 futex(0x253b420, FUTEX_WAKE_PRIVATE, 1) = 1
       584 futex(0x253b3f4, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x253b420, 4) = 2
       585 futex(0x253b420, FUTEX_WAKE_PRIVATE, 1) = 1
       586 futex(0x7fd3c2d0e9d0, FUTEX_WAIT, 32631, NULL) = 0
       587 munmap(0x7fd3bed07000, 8392704)         = 0
       588 munmap(0x7fd3c250e000, 8392704)         = 0
       589 munmap(0x7fd3c1d0d000, 8392704)         = 0
       590 munmap(0x7fd3c150c000, 8392704)         = 0
       591 write(2, "\33[1;32m[AVFilterGraph @ 0x253b0a"..., 39[AVFilterGraph @ 0x253b0a0] ) = 39
       592 write(2, "\33[1;31mError initializing thread"..., 41Error initializing threading.
       593 ) = 41
       594 write(2, "\33[1;32m[AVFilterGraph @ 0x253b0a"..., 39[AVFilterGraph @ 0x253b0a0] ) = 39
       595 write(2, "\33[1;31mError creating filter 'an"..., 41Error creating filter 'anull'
       596 ) = 41
       597 write(2, "\33[4;31mError opening filters!\n\33["..., 34Error opening filters!
       598 ) = 34

    strace -e non root :

    strace -e open ffmpeg -i 1.mov 5.avi
    open("/etc/ld.so.cache", O_RDONLY)      = 3
    open("/lib64/libasound.so.2", O_RDONLY) = 3
    open("/usr/lib64/libSDL-1.2.so.0", O_RDONLY) = 3
    open("/lib64/libpthread.so.0", O_RDONLY) = 3
    open("/usr/lib64/libx264.so.142", O_RDONLY) = 3
    open("/usr/lib64/libvpx.so.0", O_RDONLY) = 3
    open("/usr/local/lib/libvorbisenc.so.2", O_RDONLY) = 3
    open("/usr/local/lib/libvorbis.so.0", O_RDONLY) = 3
    open("/usr/local/lib/libmp3lame.so.0", O_RDONLY) = 3
    open("/lib64/libm.so.6", O_RDONLY)      = 3
    open("/lib64/libbz2.so.1", O_RDONLY)    = 3
    open("/usr/local/lib/libz.so.1", O_RDONLY) = 3
    open("/lib64/librt.so.1", O_RDONLY)     = 3
    open("/lib64/libc.so.6", O_RDONLY)      = 3
    open("/lib64/libdl.so.2", O_RDONLY)     = 3
    open("/usr/local/lib/libogg.so.0", O_RDONLY) = 3
    ffmpeg version N-65949-g0ddb051 Copyright (c) 2000-2014 the FFmpeg developers
     built on Aug 28 2014 11:39:47 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)
     configuration: --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libx264
     libavutil      54.  7.100 / 54.  7.100
     libavcodec     56.  0.101 / 56.  0.101
     libavformat    56.  3.100 / 56.  3.100
     libavdevice    56.  0.100 / 56.  0.100
     libavfilter     5.  0.103 /  5.  0.103
     libswscale      3.  0.100 /  3.  0.100
     libswresample   1.  1.100 /  1.  1.100
     libpostproc    53.  0.100 / 53.  0.100
    open("1.mov", O_RDONLY|O_CLOEXEC)       = 3
    open("/etc/localtime", O_RDONLY)        = 4
    open("/proc/meminfo", O_RDONLY|O_CLOEXEC) = 4
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov':
     Metadata:
       major_brand     : qt  
       minor_version   : 0
       compatible_brands: qt  
       creation_time   : 2014-06-05 04:40:27
       model           : iPhone 5
       model-eng       : iPhone 5
       encoder         : 7.1.1
       encoder-eng     : 7.1.1
       date            : 2014-06-04T21:40:27-0700
       date-eng        : 2014-06-04T21:40:27-0700
       make            : Apple
       make-eng        : Apple
     Duration: 00:00:07.15, start: 0.000023, bitrate: 781 kb/s
       Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 480x360, 710 kb/s, 29.09 fps, 600 tbr, 600 tbn, 1200 tbc (default)
       Metadata:
         rotate          : 90
         creation_time   : 2014-06-05 04:40:27
         handler_name    : Core Media Data Handler
         encoder         : H.264
       Side data:
         displaymatrix: rotation of -90.00 degrees
       Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
       Metadata:
         creation_time   : 2014-06-05 04:40:27
         handler_name    : Core Media Data Handler
    open("5.avi", O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0666) = 4
    [AVFilterGraph @ 0x26ff4a0] Error initializing threading.
    [AVFilterGraph @ 0x26ff4a0] Error creating filter 'anull'
    Error opening filters!

    strace root :

    579 clone(child_stack=0x7f4eb7c34ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|        CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb7c359d0, tls=0x7f4eb7c35700, child_tidptr=0x7f4eb7c359d0) = 3        383
       580 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb6c34000
       581 mprotect(0x7f4eb6c34000, 4096, PROT_NONE) = 0
       582 clone(child_stack=0x7f4eb7433ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|        CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb74349d0, tls=0x7f4eb7434700, child_tidptr=0x7f4eb74349d0) = 3        384
       583 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb6433000
       584 mprotect(0x7f4eb6433000, 4096, PROT_NONE) = 0
       585 clone(child_stack=0x7f4eb6c32ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|        CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb6c339d0, tls=0x7f4eb6c33700, child_tidptr=0x7f4eb6c339d0) = 3        385
       586 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb5c32000
       587 mprotect(0x7f4eb5c32000, 4096, PROT_NONE) = 0
       588 clone(child_stack=0x7f4eb6431ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|        CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb64329d0, tls=0x7f4eb6432700, child_tidptr=0x7f4eb64329d0) = 3        386
       589 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb5431000
       590 mprotect(0x7f4eb5431000, 4096, PROT_NONE) = 0
       591 clone(child_stack=0x7f4eb5c30ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|        CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb5c319d0, tls=0x7f4eb5c31700, child_tidptr=0x7f4eb5c319d0) = 3        387
       592 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb4c30000
       593 mprotect(0x7f4eb4c30000, 4096, PROT_NONE) = 0
       594 clone(child_stack=0x7f4eb542fff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|        CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb54309d0, tls=0x7f4eb5430700, child_tidptr=0x7f4eb54309d0) = 3        388
       595 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb442f000
       596 mprotect(0x7f4eb442f000, 4096, PROT_NONE) = 0
       597 clone(child_stack=0x7f4eb4c2eff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|        CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb4c2f9d0, tls=0x7f4eb4c2f700, child_tidptr=0x7f4eb4c2f9d0) = 3        389
       598 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb3c2e000

    strace -e root :

       strace -e open ffmpeg -i 1.mov 5.avi
       open("/etc/ld.so.cache", O_RDONLY)      = 3
       open("/lib64/libasound.so.2", O_RDONLY) = 3
       open("/usr/lib64/libSDL-1.2.so.0", O_RDONLY) = 3
       open("/lib64/libpthread.so.0", O_RDONLY) = 3
       open("/usr/lib64/libx264.so.142", O_RDONLY) = 3
       open("/usr/lib64/libvpx.so.0", O_RDONLY) = 3
       open("/usr/local/lib/libvorbisenc.so.2", O_RDONLY) = 3
       open("/usr/local/lib/libvorbis.so.0", O_RDONLY) = 3
       open("/usr/local/lib/libmp3lame.so.0", O_RDONLY) = 3
       open("/lib64/libm.so.6", O_RDONLY)      = 3
       open("/lib64/libbz2.so.1", O_RDONLY)    = 3
       open("/usr/local/lib/libz.so.1", O_RDONLY) = 3
       open("/lib64/librt.so.1", O_RDONLY)     = 3
       open("/lib64/libc.so.6", O_RDONLY)      = 3
       open("/lib64/libdl.so.2", O_RDONLY)     = 3
       open("/usr/local/lib/libogg.so.0", O_RDONLY) = 3
       ffmpeg version N-65957-gc6a3b00 Copyright (c) 2000-2014 the FFmpeg developers
         built on Aug 28 2014 13:37:32 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)
         configuration: --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libx264 --prefix=/usr --libdir=/usr/lib64 --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libx264
         libavutil      54.  7.100 / 54.  7.100
         libavcodec     56.  0.101 / 56.  0.101
         libavformat    56.  3.100 / 56.  3.100
         libavdevice    56.  0.100 / 56.  0.100
         libavfilter     5.  0.103 /  5.  0.103
         libswscale      3.  0.100 /  3.  0.100
         libswresample   1.  1.100 /  1.  1.100
         libpostproc    53.  0.100 / 53.  0.100
       open("1.mov", O_RDONLY|O_CLOEXEC)       = 3
       open("/etc/localtime", O_RDONLY)        = 4
       open("/proc/meminfo", O_RDONLY|O_CLOEXEC) = 4
       Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov':
         Metadata:
           major_brand     : qt  
           minor_version   : 0
           compatible_brands: qt  
           creation_time   : 2014-06-05 04:40:27
           model           : iPhone 5
           model-eng       : iPhone 5
           encoder         : 7.1.1
           encoder-eng     : 7.1.1
           date            : 2014-06-04T21:40:27-0700
           date-eng        : 2014-06-04T21:40:27-0700
           make            : Apple
           make-eng        : Apple
         Duration: 00:00:07.15, start: 0.000023, bitrate: 781 kb/s
           Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 480x360, 710 kb/s, 29.09 fps, 600 tbr, 600 tbn, 1200 tbc (default)
           Metadata:
             rotate          : 90
             creation_time   : 2014-06-05 04:40:27
             handler_name    : Core Media Data Handler
             encoder         : H.264
           Side data:
             displaymatrix: rotation of -90.00 degrees
           Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
           Metadata:
             creation_time   : 2014-06-05 04:40:27
             handler_name    : Core Media Data Handler
       File '5.avi' already exists. Overwrite ? [y/N] y
       open("5.avi", O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0666) = 4
       Output #0, avi, to '5.avi':
         Metadata:
           major_brand     : qt  
           minor_version   : 0
           compatible_brands: qt  
           make-eng        : Apple
           model           : iPhone 5
           model-eng       : iPhone 5
           make            : Apple
           ISFT            : Lavf56.3.100
           ICRD            : 2014-06-04T21:40:27-0700
           date-eng        : 2014-06-04T21:40:27-0700
           Stream #0:0(und): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 480x360, q=2-31, 200 kb/s, 29.09 fps, 29.09 tbn, 29.09 tbc (default)
           Metadata:
             rotate          : 90
             creation_time   : 2014-06-05 04:40:27
             handler_name    : Core Media Data Handler
             encoder         : Lavc56.0.101 mpeg4
           Stream #0:1(und): Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 44100 Hz, mono, fltp (default)
           Metadata:
             creation_time   : 2014-06-05 04:40:27
             handler_name    : Core Media Data Handler
             encoder         : Lavc56.0.101 libmp3lame
       Stream mapping:
         Stream #0:0 -> #0:0 (h264 (native) -> mpeg4 (native))
         Stream #0:1 -> #0:1 (aac (native) -> mp3 (libmp3lame))
       Press [q] to stop, [?] for help
       frame=  204 fps=0.0 q=27.2 Lsize=     348kB time=00:00:07.15 bitrate= 398.4kbits/s dup=0 drop=4    
       video:271kB audio:56kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 6.560985%