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• Playing videos using HTML5 Tag

  20 novembre 2012, par Haja Mohaideen

  I am creating a website where videos need to be streamed. The content creator uploads .mov file to the server. Upon uploading, I convert to the following formats using FFMPEG, .mp4, .webm, and .ogg.

  I am now trying to allow the video to be viewed from multiple browsers and handheld devices. The code is as follow :

  <code class="echappe-js">&lt;script&gt; <br />
  
  var video = document.getElementById(&amp;#39;video&amp;#39;);<br />
  
  video.addEventListener(&amp;#39;click&amp;#39;,function(){<br />
  
   video.play();<br />
  
   },false);<br />
  
  &lt;/script&gt;
  &lt;script type=&quot;text/javascript&quot; src=&quot;http://stackoverflow.com/feeds/tag/jwplayer.js&quot;&gt;&lt;/script&gt;
  
  &lt;script type=&quot;text/javascript&quot;&gt;<br />
  
    jwplayer(&quot;video&quot;).setup({<br />
  
      modes: [<br />
  
         { type: &amp;#39;html5&amp;#39; },<br />
  
         { type: &amp;#39;flash&amp;#39;, src: &amp;#39;player.swf&amp;#39; }<br />
  
      ]<br />
  
    });<br />
  
  &lt;/script&gt;
  

  The video works on all browsers. But, it is refusing to play on Android. When I click the play button, it shows as loading only.

  I am testing on 4.0.3.

  FFMPEG conversion codes :

  webm

  exec("ffmpeg -y -i file.mov -acodec libvorbis -ac 2 -ab 96k -ar 44100 -b 345k -s 640x360 output.webm", $command_output, $result);

  ogg

  exec("ffmpeg -y -i file.mov -acodec libvorbis -ac 2 -ab 96k -ar 44100 -b 345k -s 640x360 output.ogv", $command_output, $result);

  flv

  exec("ffmpeg -y -i file.mov -ar 44100 -ab 96 -f flv output.flv", $command_output, $result);

  For MP4 :

      sudo ffmpeg -i file.mov -s 320x240 -c:v libx264 -pix_fmt yuv420p -profile:v baseline -preset slow -acodec aac -strict experimental -ac 2 -r 15 -ab 44100 -aspect 16:9 output.mp4
  
  ffmpeg version git-2012-10-11-492b8ec Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Oct 11 2012 19:59:50 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
    configuration: --enable-gpl --enable-libfaac --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3
  
    libavutil      51. 74.100 / 51. 74.100
  
    libavcodec     54. 65.100 / 54. 65.100
  
    libavformat    54. 31.100 / 54. 31.100
  
    libavdevice    54.  3.100 / 54.  3.100
  
    libavfilter     3. 19.102 /  3. 19.102
  
    libswscale      2.  1.101 /  2.  1.101
  
    libswresample   0. 16.100 /  0. 16.100
  
    libpostproc    52.  1.100 / 52.  1.100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x23f3220] Stream #1: not enough frames to estimate rate; consider increasing probesize
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x23f3220] Stream #2: not enough frames to estimate rate; consider increasing probesize
  
  Guessed Channel Layout for  Input Stream #0.1 : stereo
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'file.mov':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537199360
  
      compatible_brands: qt  
  
      creation_time   : 2012-09-07 11:10:10
  
    Duration: 00:01:41.83, start: 0.000000, bitrate: 186917 kb/s
  
      Stream #0:0(eng): Video: qtrle (rle  / 0x20656C72), rgb24, 1920x1080, 185371 kb/s, SAR 1920:1920 DAR 16:9, 29.97 fps, 29.97 tbr, 30k tbn, 30k tbc
  
      Metadata:
  
        creation_time   : 2012-09-07 11:10:10
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 00:00:00;03
  
      Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s
  
      Metadata:
  
        creation_time   : 2012-09-07 11:10:10
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 00:00:00;03
  
      Stream #0:2(eng): Data: none (tmcd / 0x64636D74)
  
      Metadata:
  
        creation_time   : 2012-09-07 11:31:37
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 00:00:00;03
  
  File 'output.mp4' already exists. Overwrite ? [y/N] y
  
  using SAR=4/3
  
  [libx264 @ 0x240bf60] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0x240bf60] profile Constrained Baseline, level 1.2
  
  [libx264 @ 0x240bf60] 264 - core 128 r2 198a7ea - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=0 ref=5 deblock=1:0:0 analyse=0x1:0x111 me=umh subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=15 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'output.mp4':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537199360
  
      compatible_brands: qt  
  
      encoder         : Lavf54.31.100
  
      Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 320x240 [SAR 4:3 DAR 16:9], q=-1--1, 15360 tbn, 15 tbc
  
      Metadata:
  
        creation_time   : 2012-09-07 11:10:10
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 00:00:00;03
  
      Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 44 kb/s
  
      Metadata:
  
        creation_time   : 2012-09-07 11:10:10
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 00:00:00;03
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (qtrle -> libx264)
  
    Stream #0:1 -> #0:1 (pcm_s16le -> aac)
  
  Press [q] to stop, [?] for help
  
  frame=   25 fps=0.0 q=0.0 size=       0kB time=00:00:01.32 bitrate=   0.frame=   47 fps= 47 q=0.0 size=       0kB time=00:00:02.68 bitrate=   0.frame=   67 fps= 44 q=27.0 size=      12kB time=00:00:04.05 bitrate=  23frame=   88 fps= 44 q=27.0 size=      23kB time=00:00:05.41 bitrate=  34frame=  108 fps= 43 q=27.0 size=      35kB time=00:00:06.78 bitrate=  42frame=  128 fps= 42 q=27.0 size=      47kB time=00:00:08.14 bitrate=  47frame=  150 fps= 43 q=27.0 size=      64kB time=00:00:09.51 bitrate=  54frame=  172 fps= 43 q=27.0 size=      81kB time=00:00:10.88 bitrate=  61frame=  193 fps= 43 q=27.0 size=     106kB time=00:00:12.24 bitrate=  70frame=  214 fps= 42 q=27.0 size=     119kB time=00:00:13.61 bitrate=  71frame=  235 fps= 42 q=27.0 size=     127kB time=00:00:14.97 bitrate=  69frame=  254 fps= 42 q=27.0 size=     144kB time=00:00:16.34 bitrate=  72frame=  272 fps= 41 q=27.0 size=     157kB time=00:00:17.70 bitrate=  72frame=  289 fps= 41 q=27.0 size=     174kB time=00:00:19.07 bitrate=  74frame=  309 fps= 41 q=27.0 size=     183kB time=00:00:20.28 bitrate=  73frame=  329 fps= 41 q=27.0 size=     191kB time=00:00:20.77 bitrate=  75frame=  349 fps= 41 q=27.0 size=     200kB time=00:00:22.08 bitrate=  74frame=  369 fps= 41 q=27.0 size=     215kB time=00:00:23.38 bitrate=  75frame=  389 fps= 41 q=27.0 size=     225kB time=00:00:24.72 bitrate=  74frame=  408 fps= 40 q=27.0 size=     235kB time=00:00:26.02 bitrate=  74frame=  428 fps= 40 q=27.0 size=     247kB time=00:00:27.32 bitrate=  73frame=  448 fps= 40 q=27.0 size=     256kB time=00:00:28.65 bitrate=  73frame=  468 fps= 40 q=27.0 size=     264kB time=00:00:30.01 bitrate=  72frame=  489 fps= 40 q=27.0 size=     273kB time=00:00:31.38 bitrate=  71frame=  507 fps= 40 q=27.0 size=     299kB time=00:00:32.72 bitrate=  74frame=  527 fps= 40 q=27.0 size=     317kB time=00:00:34.09 bitrate=  76frame=  547 fps= 40 q=27.0 size=     336kB time=00:00:35.45 bitrate=  77frame=  565 fps= 40 q=27.0 size=     344kB time=00:00:36.82 bitrate=  76frame=  586 fps= 40 q=27.0 size=     352kB time=00:00:38.18 bitrate=  75frame=  607 fps= 40 q=27.0 size=     361kB time=00:00:39.55 bitrate=  74frame=  627 fps= 40 q=27.0 size=     370kB time=00:00:40.91 bitrate=  74frame=  647 fps= 40 q=27.0 size=     384kB time=00:00:42.28 bitrate=  74frame=  665 fps= 40 q=27.0 size=     408kB time=00:00:43.64 bitrate=  76frame=  684 fps= 40 q=27.0 size=     418kB time=00:00:45.01 bitrate=  76frame=  704 fps= 40 q=27.0 size=     427kB time=00:00:46.37 bitrate=  75frame=  721 fps= 40 q=27.0 size=     453kB time=00:00:47.74 bitrate=  77frame=  741 fps= 40 q=27.0 size=     463kB time=00:00:49.10 bitrate=  77frame=  761 fps= 40 q=27.0 size=     472kB time=00:00:50.47 bitrate=  76frame=  784 fps= 40 q=27.0 size=     481kB time=00:00:51.84 bitrate=  76frame=  804 fps= 40 q=27.0 size=     498kB time=00:00:53.20 bitrate=  76frame=  822 fps= 40 q=27.0 size=     518kB time=00:00:54.57 bitrate=  77frame=  843 fps= 40 q=27.0 size=     529kB time=00:00:55.93 bitrate=  77frame=  862 fps= 40 q=27.0 size=     547kB time=00:00:57.30 bitrate=  78frame=  882 fps= 40 q=27.0 size=     558kB time=00:00:58.13 bitrate=  78frame=  903 fps= 40 q=27.0 size=     568kB time=00:00:58.98 bitrate=  78frame=  923 fps= 40 q=27.0 size=     578kB time=00:01:00.35 bitrate=  78frame=  943 fps= 40 q=27.0 size=     588kB time=00:01:01.67 bitrate=  78frame=  964 fps= 40 q=27.0 size=     598kB time=00:01:03.06 bitrate=  77frame=  984 fps= 40 q=27.0 size=     607kB time=00:01:04.42 bitrate=  77frame= 1004 fps= 40 q=27.0 size=     626kB time=00:01:05.72 bitrate=  78frame= 1026 fps= 40 q=27.0 size=     638kB time=00:01:07.20 bitrate=  77frame= 1047 fps= 40 q=27.0 size=     655kB time=00:01:09.58 bitrate=  77frame= 1069 fps= 40 q=27.0 size=     670kB time=00:01:10.95 bitrate=  77frame= 1089 fps= 40 q=27.0 size=     691kB time=00:01:12.32 bitrate=  78frame= 1108 fps= 40 q=27.0 size=     710kB time=00:01:12.64 bitrate=  80frame= 1126 fps= 40 q=27.0 size=     731kB time=00:01:13.85 bitrate=  81frame= 1142 fps= 40 q=27.0 size=     759kB time=00:01:15.05 bitrate=  82frame= 1157 fps= 39 q=27.0 size=     787kB time=00:01:16.41 bitrate=  84frame= 1174 fps= 39 q=27.0 size=     796kB time=00:01:17.78 bitrate=  83frame= 1192 fps= 39 q=27.0 size=     806kB time=00:01:19.14 bitrate=  83frame= 1209 fps= 39 q=27.0 size=     821kB time=00:01:19.38 bitrate=  84frame= 1227 fps= 39 q=27.0 size=     831kB time=00:01:20.59 bitrate=  84frame= 1248 fps= 39 q=27.0 size=     840kB time=00:01:21.96 bitrate=  84frame= 1267 fps= 39 q=27.0 size=     848kB time=00:01:23.24 bitrate=  83frame= 1289 fps= 39 q=27.0 size=     857kB time=00:01:24.73 bitrate=  82frame= 1309 fps= 39 q=24.0 size=     877kB time=00:01:26.03 bitrate=  83frame= 1329 fps= 39 q=27.0 size=     892kB time=00:01:27.40 bitrate=  83frame= 1351 fps= 39 q=27.0 size=     901kB time=00:01:28.85 bitrate=  83frame= 1372 fps= 39 q=27.0 size=     912kB time=00:01:30.28 bitrate=  82frame= 1394 fps= 39 q=27.0 size=     925kB time=00:01:32.52 bitrate=  81frame= 1418 fps= 39 q=27.0 size=     936kB time=00:01:34.16 bitrate=  81frame= 1441 fps= 40 q=27.0 size=     947kB time=00:01:35.53 bitrate=  81frame= 1464 fps= 40 q=27.0 size=     957kB time=00:01:36.89 bitrate=  80frame= 1488 fps= 40 q=27.0 size=     969kB time=00:01:38.26 bitrate=  80frame= 1509 fps= 40 q=27.0 size=     981kB time=00:01:39.62 bitrate=  80frame= 1526 fps= 40 q=27.0 size=     993kB time=00:01:41.90 bitrate=  79frame= 1530 fps= 40 q=27.0 Lsize=    1038kB time=00:01:42.00 bitrate=  83.4kbits/s dup=0 drop=1522    
  
  video:406kB audio:590kB subtitle:0 global headers:0kB muxing overhead 4.258083%
  
  [libx264 @ 0x240bf60] frame I:15    Avg QP:16.30  size:  2928
  
  [libx264 @ 0x240bf60] frame P:1515  Avg QP:22.12  size:   245
  
  [libx264 @ 0x240bf60] mb I  I16..4: 72.9%  0.0% 27.1%
  
  [libx264 @ 0x240bf60] mb P  I16..4:  3.9%  0.0%  0.7%  P16..4:  3.2%  1.1%  0.5%  0.0%  0.0%    skip:90.5%
  
  [libx264 @ 0x240bf60] coded y,uvDC,uvAC intra: 12.1% 38.2% 14.8% inter: 1.2% 2.7% 0.9%
  
  [libx264 @ 0x240bf60] i16 v,h,dc,p: 29% 23%  4% 44%
  
  [libx264 @ 0x240bf60] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 16% 30%  6%  8%  8%  5%  6%  3%
  
  [libx264 @ 0x240bf60] i8c dc,h,v,p: 50% 27% 18%  5%
  
  [libx264 @ 0x240bf60] ref P L0: 80.0%  8.9%  6.1%  2.7%  2.3%
  
  [libx264 @ 0x240bf60] kb/s:32.58

  I decided to remote debug to see what is happening. I realised that the video status is pending.

  

• Playing With File

  8 septembre 2011, par Multimedia Mike — General

  I played with the ‘file’ utility a long time ago because I wanted to make it recognize a large number of multimedia formats. I had trouble getting my changes to take. But I’m prepared to try again after many years.

  Aiming at the Corpus
  In my local mirror of the MPlayerHQ samples archive, I find 9853 unique files. So I run all of them through the ‘file’ command :

    ’find /path/to/samples -type f -print0 | xargs -0 file —no-pad’
  

  My Ubuntu installation has file v5.04. I also tested against 5.07 and the latest, 5.08. Here is the number of files each version was unable to identify (generically marking as ‘data’) :

  5.04  1521
  5.07  1405
  5.08  1501
  

  That seems like a regression for v5.08 until I dug into the details and saw quite a few items like this, indicating that the MPEG detection could use some work :

  
   mov/mov-demux-infinite-loop.mpg : DOS-executable (
  +mov/mg-‹demux-infinite-loop.mpg : data
  
   image-samples/UNeedQT4.pntg : DOS-executable (
  +imY- samples/UNeedQT4.pntg : data
  

  Workflow
  These are just notes to myself and perhaps anyone else who wants to add new file formats to be identified by the ‘file’ command.

  First, download either the latest release from the FTP or clone from Github. Do the usual unpack, ‘./configure’, ‘make’ routine. To use this newly-built version and its associated magic file :

    ./src/file —magic-file magic/magic.mgc <file>
  

  To add a new format for ID, first, run the foregoing command to ensure that it’s not already identified. Then, check over the files in magic/Magdir and see which one might pertain to what you’re doing (it’s unlikely that your format will merit a new file in this directory). For example, for this round, I modified animation, audio, iff, and riff. Add or modify existing specs based on the copious examples in the directory and by consulting the appropriate man page (‘man 5 magic’).

  Finally, run ‘make’ again which will regenerate the magic file. Invoke the above command again to use the modified magic file.

  Before and After
  On a selection of formats taken from the samples archive (renamed and cut down to a kilobyte because detection typically only relies on the first few bytes), here is the “before” :

  amv :            RIFF (little-endian) data
  armovie :        data
  bbc-dirac :      data
  interplay-mve :  data
  mtv :            data
  nintendo-thp :   data
  nullsoft-video : data
  redcode :        data
  sega-film :      data
  smacker :        data
  trueaudio :      data
  vqa :            IFF data
  wavpack :        data
  wc3-mve :        IFF data
  wtv :            data
  

  And the “after” :

  amv :            RIFF (little-endian) data, AMV
  armovie :        ARMovie
  bbc-dirac :      BBC Dirac Video
  interplay-mve :  Interplay MVE Movie
  mtv :            MTV Multimedia File
  nintendo-thp :   Nintendo THP Multimedia
  nullsoft-video : Nullsoft Video
  redcode :        REDCode Video
  sega-film :      Sega FILM/CPK Multimedia, 320 x 224
  smacker :        RAD Game Tools Smacker Multimedia version 2, 320 x 200, 100 frames
  trueaudio :      True Audio Lossless Audio
  vqa :            IFF data, Westwood Studios VQA Multimedia, 418 video frames, 320 x 200
  wavpack :        WavPack Lossless Audio
  wc3-mve :        IFF data, Wing Commander III Video, PC version
  wtv :            Windows Television DVR Media
  

  After rerunning ‘file’ on the mphq corpus using the modified magic file, only 1329 files remain unidentified (down from 1501).

  Going Forward
  As mentioned, MPEG detection could probably be strengthened. However, a major weakness is QuickTime/MP4. Many files are not detected, probably owing to the many ways that QuickTime files can begin.

• Revision 3199 : Un petit formulaire de config permettant de changer les secteurs... DEs ...

  6 avril 2010, par kent1 — Log

  Un petit formulaire de config permettant de changer les secteurs... DEs chaines de langue supplémentaires On s’insère dans styliser pour styler les articles ou rubriques des secteurs spécifiques ainsi que le profil des auteurs