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  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP 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 (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (5601)

  • ffmpeg, -shortest does not work when overlaying PNG sequence on a still

    27 août 2014, par Aviator Addis

    How do you make this work ?

    ffmpeg -loop 1 -i emma.jpg -r 29.97 -i source\source_%%05d.png -filter_complex overlay -r 29.97 -pix_fmt yuv420p -y -shortest sample_source.mp4

    It seems the -shortest option does not work and it just keeps encoding with no stop on the last frame. I’m using the latest static 8-27-2014 64 bit build on windows 8.1 If I assigned -t value it will stop at the specified length, but I need it’s output length set to whatever the sequence might happen to be (at it will vary).

  • How to create a scheduled task – Introducing the Piwik Platform

    28 août 2014, par Thomas Steur — Development

    This is the next post of our blog series where we introduce the capabilities of the Piwik platform (our previous post was How to create a custom theme in Piwik). This time you’ll learn how to execute scheduled tasks in the background, for instance sending a daily email. For this tutorial you will need to have basic knowledge of PHP.

    What can you do with scheduled tasks ?

    Scheduled tasks let you execute tasks regularly (hourly, weekly, …). For instance you can :

    • create and send custom reports or summaries
    • sync users and websites with other systems
    • clear any caches
    • import third-party data into Piwik
    • monitor your Piwik instance
    • execute any other task you can think of

    Getting started

    In this series of posts, we assume that you have already set up your development environment. If not, visit the Piwik Developer Zone where you’ll find the tutorial Setting up Piwik.

    To summarize the things you have to do to get setup :

    • Install Piwik (for instance via git).
    • Activate the developer mode : ./console development:enable --full.
    • Generate a plugin : ./console generate:plugin --name="MyTasksPlugin". There should now be a folder plugins/MyTasksPlugin.
    • And activate the created plugin under Settings => Plugins.

    Let’s start creating a scheduled task

    We start by using the Piwik Console to create a tasks template :

    ./console generate:scheduledtask

    The command will ask you to enter the name of the plugin the task should belong to. I will simply use the above generated plugin name “MyTasksPlugin”. There should now be a file plugins/MyTasksPlugin/Tasks.php which contains some examples to get you started easily :

    class Tasks extends \Piwik\Plugin\Tasks
    
{
    
    public function schedule()
    
    {
    
        $this->hourly('myTask');  // method will be executed once every hour
    
        $this->daily('myTask');   // method will be executed once every day
    
        $this->weekly('myTask');  // method will be executed once every week
    
        $this->monthly('myTask'); // method will be executed once every month
    

    
        // pass a parameter to the task
    
        $this->weekly('myTaskWithParam', 'anystring');
    

    
        // specify a different priority
    
        $this->monthly('myTask', null, self::LOWEST_PRIORITY);
    
        $this->monthly('myTaskWithParam', 'anystring', self::HIGH_PRIORITY);
    
    }
    

    
    public function myTask()
    
    {
    
        // do something
    
    }
    

    
    public function myTaskWithParam($param)
    
    {
    
        // do something
    
    }
    
}

    A simple example

    As you can see in the generated template you can execute tasks hourly, daily, weekly and monthly by registering a method which represents the actual task :

    public function schedule()
    
{
    
    // register method remindMeToLogIn to be executed once every day
    
    $this->daily('remindMeToLogIn');  
    
}
    

    
public function remindMeToLogIn()
    
{
    
    $mail = new \Piwik\Mail();
    
    $mail->addTo('me@example.com');
    
    $mail->setSubject('Check stats');
    
    $mail->setBodyText('Log into your Piwik instance and check your stats!');
    
    $mail->send();
    
}

    This example sends you an email once a day to remind you to log into your Piwik daily. The Piwik platform makes sure to execute the method remindMeToLogIn exactly once every day.

    How to pass a parameter to a task

    Sometimes you want to pass a parameter to a task method. This is useful if you want to register for instance one task for each user or for each website. You can achieve this by specifying a second parameter when registering the method to execute.

    public function schedule()
    
{
    
    foreach (\Piwik\Site::getSites() as $site) {
    
        // create one task for each site and pass the URL of each site to the task
    
        $this->hourly('pingSite', $site['main_url']); 
    
    }
    
}
    

    
public function pingSite($siteMainUrl)
    
{
    
    file_get_contents($siteMainUrl);
    
}

    How to test scheduled tasks

    After you have created your task you are surely wondering how to test it. First, you should write a unit or integration test which we will cover in one of our future blog posts. Just one hint : You can use the command ./console generate:test to create a test. To manually execute all scheduled tasks you can execute the API method CoreAdminHome.runScheduledTasks by opening the following URL in your browser :

    http://piwik.example.com/index.php?module=API&method=CoreAdminHome.runScheduledTasks&token_auth=YOUR_API_TOKEN

    Don’t forget to replace the domain and the token_auth URL parameter.

    There is one problem with executing the scheduled tasks : The platform makes sure they will be executed only once an hour, a day, etc. This means you can’t simply reload the URL and test the method again and again as you would have to wait for the next hour or day. The proper solution is to set the constant DEBUG_FORCE_SCHEDULED_TASKS to true within the file Core/TaskScheduler.php. Don’t forget to set it back to false again once you have finished testing it.

    Starting from Piwik 2.6.0 you can alternatively execute the following command :

    ./console core:run-scheduled-tasks --force --token-auth=YOUR_TOKEN_AUTH

    The option “–force” will make sure to execute even tasks that are not due to run at this time. So you won’t have to modify any files.

    Which tasks are registered and when is the next execution time of my task ?

    The TasksTimetable plugin from the Marketplace can answer this question for you. Simply install and activate the plugin with one click by going to Settings => Marketplace => Get new functionality. It’ll add a new admin menu item under Settings named Scheduled Tasks.

    Publishing your Plugin on the Marketplace

    In case you want to share your task(s) with other Piwik users you can do this by pushing your plugin to a public GitHub repository and creating a tag. Easy as that. Read more about how to distribute a plugin.

    Advanced features

    Isn’t it easy to create scheduled tasks ? We never even created a file ! Of course, based on our API design principle “The complexity of our API should never exceed the complexity of your use case.” you can accomplish more if you want. For instance, you can define priorities, you can directly register methods from different objects and classes, you can specify at which time of a day a task should run and more.

    Would you like to know more about tasks ? Go to our Tasks class reference in the Piwik Developer Zone.

    If you have any feedback regarding our APIs or our guides in the Developer Zone feel free to send it to us.

  • 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%

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