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  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • 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.

Sur d’autres sites (4474)

  • Need explanation of details of ffmpeg and pipes command

    16 octobre 2013, par Donald A Nummer Jr

    Got the following from FFmpeg FAQ :

    mkfifo intermediate1.mpg
    
mkfifo intermediate2.mpg
    
ffmpeg -i input1.avi -sameq -y intermediate1.mpg < /dev/null &
    
ffmpeg -i input2.avi -sameq -y intermediate2.mpg < /dev/null &
    
cat intermediate1.mpg intermediate2.mpg |\
    
ffmpeg -f mpeg -i - -sameq -vcodec mpeg4 -acodec libmp3lame output.avi

    Before i use or modify it I would like to understand it completely.

    What does the < /dev/null & do ?

    I understand | is pipe but why |\ ?

    What is the -f mpeg after ffmpeg (Seems, it tells ffmpeg to accept the piped in output from the cat(?) )

  • Realtime ffmpeg shell output PHP

    26 septembre 2013, par matthew johnston

    Alright, I've been fighting this problem for a few days. Works fine on my local windows machine but, can't seem to get it to work on my CentOS server. My script grabs the duration of the video being converted and also grabs the current seconds it has processed inside of ffmpeg. However, it is only grabbing the "input file" of the ffmpeg output and stopping there. I have tried using both pipes (STDOUT [1] & STDERR [2]) for some reason ffmpeg likes to output on the STDERR pipe. Weird.

    $filename = "somefilename.tmp";
    
$descriptor = array(
    
    0 => array("pipe", "r"),
    
    1 => array("pipe", "w"),
    
    2 => array("pipe", "w")
    
);
    

    
$ffmpeg = "ffmpeg -i /var/www/spotloader/videos/flipped/tmp/".$file."_comb.ts -vcodec mpeg2video -acodec pcm_s16le -pix_fmt yuv422p -vtag xdvb -b:v 13000k -r 30000/1001 /var/www/spotloader/videos/flipped/tmp/".$file.".mov";
    

    
//open the process
    
$process = proc_open($ffmpeg, $descriptor, $pipes, NULL, $_ENV);
    

    
//if the process opened
    
if ( is_resource( $process ) == true )
    
{
    
    //get process status
    
    $procStatus = proc_get_status( $process );
    

    
    //if its running, let node know
    
    if ( $procStatus['running'] )
    
    {
    
        //nodejs socket, nothing wrong here
    
        $this->_sendSocket('converting', array('filename' => str_replace('.tmp', '', $file)));
    
    }
    

    
    //while the process is running
    
    while( $procStatus['running'] === true )
    
    {
    
        //there is output in the pipe
    
        if ( !feof( $pipes[1] ) )
    
        {
    
            //get the output
    
            $data = fgets($pipes[1], 128);
    
            //match the outputs duration and save it.
    
            if(preg_match('/Duration:\s([0-9]{2}:[0-9]{2}:[0-9]{2})/', $data, $matches)) 
    
            {
    
                static $duration;
    
                $duration = $this->_convertToSeconds($matches[1]);
    
            }
    

    
            //match the outputs current encoding time
    
            if(preg_match('/time=([0-9]{2}:[0-9]{2}:[0-9]{2})/', $data, $matches)) 
    
            {
    
                //convert to seconds works fine, so it is not included.
    
                $curTime = $this->_convertToSeconds($matches[1]);
    
                //nodejs socket, nothing wrong here
    
                $this->_sendSocket('update', array('percent' => round( ($curTime / $duration) * 100), 'filename' => str_replace('.tmp', '', $file)));
    
            }
    
        }
    

    
        //update process status
    
        $procStatus = proc_get_status( $process );
    
    }
    

    
    //nodejs socket, nothing wrong here
    
    $this->_sendSocket('converted', array('percent' => 100, 'filename' => str_replace('.tmp', '', $file)));
    
}

    FFMPEG output I receive using the PHP code above

    ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
    
built on May 10 2013 15:14:14 with gcc 4.4.6 (GCC) 20120305 (Red Hat 4.4.6-4)
    
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 
    
--mandir=/usr/share/man --enable-shared --enable-runtime-cpudetect --enable-gpl 
    
--enable-version3 --enable-postproc --enable-avfilter --enable-pthreads 
    
--enable-x11grab --enable-vdpau --disable-avisynth --enable-frei0r --enable-libopencv 
    
--enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libnut 
    
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg 
    
--enable-librtmp --enable-libspeex --enable-libtheora --enable-libvorbis 
    
--enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid 
    
--extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions 
    
-fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' 
    
--disable-stripping
    
libavutil      52. 18.100 / 52. 18.100
    
libavcodec     54. 92.100 / 54. 92.100
    
libavformat    54. 63.104 / 54. 63.104
    
libavdevice    54.  3.103 / 54.  3.103
    
libavfilter     3. 42.103 /  3. 42.103
    
libswscale      2.  2.100 /  2.  2.100
    
libswresample   0. 17.102 /  0. 17.102
    
libpostproc    52.  2.100 / 52.  2.100
    
[mpegts @ 0x243c620] max_analyze_duration 5000000 reached at 5016000 microseconds
    
Input #0, mpegts, from '/var/www/spotloader/videos/flipped/tmp/Wildlife10.tmp_comb.ts':
    
Duration: 00:00:02.02, start: 1.389978, bitrate: 227018 kb/s
    
Program 1
    
Metadata:
    
  service_name    : Service01
    
  service_provider: FFmpeg
    
Stream #0:0[0x100]: Video: mpeg2video (4:2:2) ([2][0][0][0] / 0x0002), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    
Stream #0:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, 1 channels (FL+FR), s16p, 128 kb/s

    FFMPEG output I'm expecting the "time=00:00:00" towards the end is what I need to capture in realtime. This is taken by running the FFMPEG command directly in the shell.

    ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
    
built on May 10 2013 15:14:14 with gcc 4.4.6 (GCC) 20120305 (Red Hat 4.4.6-4)
    
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 
    
--mandir=/usr/share/man --enable-shared --enable-runtime-cpudetect --enable-gpl 
    
--enable-version3 --enable-postproc --enable-avfilter --enable-pthreads 
    
--enable-x11grab --enable-vdpau --disable-avisynth --enable-frei0r --enable-libopencv 
    
--enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libnut 
    
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg 
    
--enable-librtmp --enable-libspeex --enable-libtheora --enable-libvorbis 
    
--enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid 
    
--extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions 
    
-fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' 
    
--disable-stripping
    
  libavutil      52. 18.100 / 52. 18.100
    
  libavcodec     54. 92.100 / 54. 92.100
    
  libavformat    54. 63.104 / 54. 63.104
    
  libavdevice    54.  3.103 / 54.  3.103
    
  libavfilter     3. 42.103 /  3. 42.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  2.100 / 52.  2.100
    
[mpegts @ 0x10c9620] max_analyze_duration 5000000 reached at 5016000 microseconds
    
Input #0, mpegts, from '/var/www/spotloader/videos/flipped/tmp/Wildlife10.tmp_comb.ts':
    
  Duration: 00:00:02.02, start: 1.389978, bitrate: 227018 kb/s
    
  Program 1
    
    Metadata:
    
      service_name    : Service01
    
      service_provider: FFmpeg
    
    Stream #0:0[0x100]: Video: mpeg2video (4:2:2) ([2][0][0][0] / 0x0002), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    
    Stream #0:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, 1 channels (FL+FR), s16p, 128 kb/s
    
Channel layout 'stereo' with 2 channels does not match specified number of channels 1: ignoring specified channel layout
    
Output #0, mov, to '/var/www/spotloader/videos/flipped/tmp/Wildlife10.tmp.mov':
    
  Metadata:
    
    encoder         : Lavf54.63.104
    
    Stream #0:0: Video: mpeg2video (xdvb / 0x62766478), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 13000 kb/s, 30k tbn, 29.97 tbc
    
    Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mpeg2video -> mpeg2video)
    
  Stream #0:1 -> #0:1 (mp2 -> pcm_s16le)
    
Press [q] to stop, [?] for help
    
Input stream #0:1 frame changed from rate:48000 fmt:s16p ch:1 chl:1 channels (FL+FR) to rate:48000 fmt:s16p ch:2 chl:stereo
    
Input stream #0:1 frame changed from rate:48000 fmt:s16p ch:2 chl:stereo to rate:48000 fmt:s16p ch:1 chl:mono
    
Input stream #0:1 frame changed from rate:48000 fmt:s16p ch:1 chl:mono to rate:48000 fmt:s16p ch:2 chl:stereo
    
Input stream #0:0 frame changed from size:1920x1080 fmt:yuv422p to size:1280x720 fmt:yuv422p0
    
Input stream #0:1 frame changed from rate:48000 fmt:s16p ch:2 chl:stereo to rate:44100 fmt:s16p ch:2 chl:stereo
    
frame=  741 fps= 52 q=2.6 size=   43866kB time=00:00:24.65 bitrate=14573.5kbits/s dup=5 drop=0

    Any ideas ? What needs changing from the switch from Windows to CentOS ?

    EDIT :
    I got this to work using popen instead. It also reduced my code. If anyone else does have a solution go ahead and post it. Thanks !

  • Crossdevice encoding static file to stream in browser using FFMPEG (segmented h264 ?)

    20 mars 2014, par Vprnl

    I'm building a mediacenter application in NodeJS which is going pretty ok.
    (you can check it out on Github : https://github.com/jansmolders86/mediacenterjs )

    I'm using FFMPEG to transcode local (static) movies to a stream which I then send to the browser.

    At first I used h264 with Flash which worked in browsers, but I really need it to work on Android an iOS (so no Flash) and preferably working on a Raspberry Pi.

    But getting it to play on all devices is driving me absolutely insane !

    I have all these bits of the puzzle I've gathered from countless hours reading articles, tutorials and stack overflow posts, which led me to the conclusion that I need to produce the following :

    • Use video codec H264 to transcode to MP4
    • Move the moovatom '-movflags' to make a MP4 streamable
    • Segment the stream so Apple can play the stream as well.

    But getting nowhere with this. Every time I produce a series of FFMPEG settings that either don't work, or work on some devices rather than all.

    Some of my failed attempt where :

    My flash attempt -> Main problem (not running in IOS) :

        '-y','-ss 0','-b 800k','-vcodec libx264','-acodec mp3'\ 
    
    '-ab 128','-ar 44100','-bufsize 62000', '-maxrate 620k'\
    
    metaDuration,tDuration,'-f flv

    my HLS attempt -> Main problem (not running in browser) :

            '-r 15','-b:v 128k','-c:v libx264','-x264opts level=41'\
    
        '-threads 4','-s 640x480','-map 0:v','-map 0:a:0','-c:a mp3'\
    
        '-b:a 160000','-ac 2','-f hls','-hls_time 10','-hls_list_size 6'\
    
        '-hls_wrap 18','-start_number 1'

    My MP4 attempt -> Main problem (duration is shortened and the later part of the video is speeding by)

           '-y','-ss 0','-b 800k','-vcodec libx264','-acodec mp3'\
    
       '-ab 128','-ar 44100','-bufsize 62000', '-maxrate 620k'\
    
       metaDuration,tDuration,'-f mp4','-movflags','frag_keyframe+empty_moov'

    Second MP4 attempt : -> Main problem (duration is shortened and the later part of the video is speeding by)

        '-y','-vcodec libx264','-pix_fmt yuv420p','-b 1200k','-flags +loop+mv4'\
    
    '-cmp 256','-partitions +parti4x4+parti8x8+partp4x4+partp8x8+partb8x8'\
    
    '-me_method hex','-subq 7','-trellis 1','-refs 5','-bf 3','-coder 1'\
    
    '-me_range 16','-g 150','-keyint_min 25','-sc_threshold 40'\
    
    '-i_qfactor 0.71','-acodec mp3','-qmin 10','-qdiff 4','-qmax 51'\
    
    '-ab 128k','-ar 44100','-threads 2','-f mp4','-movflags','frag_keyframe+empty_moov'])

    Here is an example of the FFMPEG log running with these settings :

            file conversion error ffmpeg version N-52458-gaa96439 Copyright (c) 2000-2013 the FFmpeg developers
    
          built on Apr 24 2013 22:19:32 with gcc 4.8.0 (GCC)
    
          configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --e
    
        nable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable
    
        -libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --ena
    
        ble-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwola
    
        me --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enabl
    
        e-libxvid --enable-zlib
    
          libavutil      52. 27.101 / 52. 27.101
    
          libavcodec     55.  6.100 / 55.  6.100
    
          libavformat    55.  3.100 / 55.  3.100
    
          libavdevice    55.  0.100 / 55.  0.100
    
          libavfilter     3. 60.101 /  3. 60.101
    
          libswscale      2.  2.100 /  2.  2.100
    
          libswresample   0. 17.102 /  0. 17.102
    
          libpostproc    52.  3.100 / 52.  3.100
    
        [avi @ 02427900] non-interleaved AVI
    
        Guessed Channel Layout for  Input Stream #0.1 : mono
    
        Input #0, avi, from 'C:/temp/the avengers.avi':
    
          Duration: 00:00:34.00, start: 0.000000, bitrate: 1433 kb/s
    
            Stream #0:0: Video: cinepak (cvid / 0x64697663), rgb24, 320x240, 15 tbr, 15 tbn, 15 tbc
    
            Stream #0:1: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 22050 Hz, mono, u8, 176 kb/s
    
        Please use -b:a or -b:v, -b is ambiguous
    
        [libx264 @ 02527c60] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
        [libx264 @ 02527c60] profile High, level 2.0
    
        [libx264 @ 02527c60] 264 - core 130 r2274 c832fe9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x26
    
        4.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x133 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16
    
         chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=2 lookahead_threads=1 sliced_th
    
        reads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 we
    
        ightb=1 open_gop=0 weightp=2 keyint=150 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=120
    
        0 ratetol=1.0 qcomp=0.60 qpmin=10 qpmax=51 qpstep=4 ip_ratio=1.41 aq=1:1.00
    
        Output #0, mp4, to 'pipe:1':
    
          Metadata:
    
            encoder         : Lavf55.3.100
    
            Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 320x240, q=10-51, 1200 kb/s, 15360 tbn, 15 tbc
    
            Stream #0:1: Audio: mp3 (i[0][0][0] / 0x0069), 44100 Hz, mono, s16p, 128 kb/s
    
        Stream mapping:
    
          Stream #0:0 -> #0:0 (cinepak -> libx264)
    
          Stream #0:1 -> #0:1 (pcm_u8 -> libmp3lame)
    
        Press [q] to stop, [?] for help
    
        frame=  106 fps=0.0 q=10.0 size=       1kB time=00:00:06.94 bitrate=   1.4kbits/s
    
        frame=  150 fps=149 q=14.0 size=       1kB time=00:00:09.87 bitrate=   1.0kbits/s
    
        frame=  191 fps=126 q=16.0 size=       1kB time=00:00:12.61 bitrate=   0.8kbits/s
    
        frame=  244 fps=121 q=16.0 size=    2262kB time=00:00:16.14 bitrate=1147.6kbits/s
    
        frame=  303 fps=120 q=14.0 size=    2262kB time=00:00:20.08 bitrate= 922.2kbits/s
    
        frame=  354 fps=117 q=15.0 size=    3035kB time=00:00:23.48 bitrate=1058.6kbits/s
    
        frame=  402 fps=113 q=15.0 size=    3035kB time=00:00:26.67 bitrate= 932.1kbits/s
    
        frame=  459 fps=113 q=16.0 size=    4041kB time=00:00:30.43 bitrate=1087.7kbits/s
    
        frame=  510 fps=103 q=2686559.0 Lsize=    5755kB time=00:00:33.93 bitrate=1389.3kbits/s
    

    
        video:5211kB audio:531kB subtitle:0 global headers:0kB muxing overhead 0.235111%
    
        [libx264 @ 02527c60] frame I:6     Avg QP:10.55  size: 25921
    
        [libx264 @ 02527c60] frame P:245   Avg QP:12.15  size: 14543
    
        [libx264 @ 02527c60] frame B:259   Avg QP:15.55  size:  6242
    
        [libx264 @ 02527c60] consecutive B-frames:  6.1% 73.7% 14.7%  5.5%
    
        [libx264 @ 02527c60] mb I  I16..4: 19.9%  6.2% 73.9%
    
        [libx264 @ 02527c60] mb P  I16..4:  6.0%  0.2% 12.0%  P16..4: 35.4%  9.6% 16.3%  7.0%  5.6%    skip: 7.8%
    
        [libx264 @ 02527c60] mb B  I16..4:  0.7%  0.0%  4.3%  B16..8: 27.6% 17.2% 17.0%  direct:17.3%  skip:15.9%  L0:39.4% L1:43.2%
    
        BI:17.4%
    
        [libx264 @ 02527c60] final ratefactor: 11.41
    
        [libx264 @ 02527c60] 8x8 transform intra:1.6% inter:4.0%
    
        [libx264 @ 02527c60] coded y,uvDC,uvAC intra: 93.0% 97.0% 94.9% inter: 58.4% 58.7% 50.6%
    
        [libx264 @ 02527c60] i16 v,h,dc,p: 15% 26% 54%  5%
    
        [libx264 @ 02527c60] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 17% 39%  4%  4%  3%  1%  6%  9%
    
        [libx264 @ 02527c60] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 34% 21%  4%  2%  2%  2%  2%  5%
    
        [libx264 @ 02527c60] i8c dc,h,v,p: 51% 24% 19%  6%
    
        [libx264 @ 02527c60] Weighted P-Frames: Y:4.1% UV:1.2%
    
        [libx264 @ 02527c60] ref P L0: 68.2%  9.8% 11.0%  5.6%  4.6%  0.8%  0.0%
    
        [libx264 @ 02527c60] ref B L0: 87.7%  8.0%  3.9%  0.4%
    
        [libx264 @ 02527c60] ref B L1: 97.8%  2.2%
    
        [libx264 @ 02527c60] kb/s:1255.36

    Lastly this is my node code fireing up FFMPEG. (I use the module Fluent-ffmpeg : https://github.com/schaermu/node-fluent-ffmpeg )

        var proc = new ffmpeg({ source: movie, nolog: true, timeout:15000})                         
    
        .addOptions(['-r 15','-b:v 128k','-c:v libx264','-x264opts level=41','-threads 4','-s 640x480','-map 0:v','-map 0:a:0','-c:a mp3','-b:a 160000','-ac 2','-f hls','-hls_time 10','-hls_list_size 6','-hls_wrap 18','-start_number 1 stream.m3u8'])
    
        .writeToStream(res, function(retcode, error){
    
            if (!error){
    
                console.log('file has been converted succesfully',retcode .green);
    
            }else{
    
                console.log('file conversion error',error .red);
    
            }
    
        });

    So to conclude this very long and code heavy question :

    I hope this does not come off as a lazy request, but could someone show/explain to me which FFMPEG settings could/should work on all platforms (modern browsers, Android and iOS) producing a stream of a static file which I can send to a HTML5 player.

    [EDIT] what I need if a generic option isn't available

    And if this is not possible as some posts might suggest, I would love to see a set of FFMPEG settings that get's the job done properly as far as mp4 streaming is concerned. (e.g encoding a streamable mp4).

    The streaming mp4 needs the following

    • A shifted moovAtom
    • It needs to be h264

    Thanks very much for your help !

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