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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.

  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

Sur d’autres sites (10438)

  • iOS switching between audio & subtitle tracks added using ffmpeg

    27 décembre 2019, par Tony M

    Edit : Title altered to reflect that the answer and comments by @llogan cover switching between both audio and subtitle tracks.

    I have an m.mp4 with English audio and want to add a second audio stream in Italian so that I can play either language using the iPhone. When I used this command :

    ffmpeg -i m.mp4 -i ita.mp3 -c copy -map 0 -map 1 out.mp4

    the output from ffmpeg -i out.mp4 (see below) shows that a new audio stream is added, and I can switch between audio streams using the VLC player. Yet when I transfer the video to the TV app and play it on either MacOS or iOS it only plays the original English and I see no options to play other languages.

    How do I get it to be able to switch between either audio on iOS ?

    Here is the output from ffmpeg -i out.mp4:

        Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 400x300 [SAR 1:1 DAR 4:3], q=2-31, 482 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 24k tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 102 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
    Stream #0:2: Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 152 kb/s
    
    Metadata:
    
      encoder         : LAME3.100
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
  Stream #1:0 -> #0:2 (copy)

  • FFMPEG API / Lib : sending video from Webcam to server using RTSP

    22 avril 2015, par AlEX

    How to realize that ? Or somebody has example / tutorial ?

    In ffmpeg(console) it is so simple : just set input, output and format..

    But how it realize using ffmpeg api, no more information and/or tutorial((

    And i’m sorry for my bad english

  • How to set custom handler_name metadata for subtitle stream using FFMPEG

    10 mars 2015, par AWainb

    I’m currently using FFMPEG to embed subtitles into my MP4 files and I am stumped trying to figure out how to custom set the "handler_name" metadata tag on my subtitle stream so I can control the name that is displayed when selecting the subtitle within a player like MPC-HC (Media Player Classic) ?

    My current command to embed the subtitle is :

    ffmpeg -i "video.mp4" -sub_charenc UTF-8 -i "video.srt" -c:v copy -c:a copy -c:s mov_text -metadata:s:s:0 language=eng -metadata:s:s:0 handler_name="English" -id3v2_version 3 -write_id3v1 1 "subbed_video.mp4"

    Output :

    C:\path\to>ffmpeg -y -i "video.mp4" -sub_charenc UTF-8 -i "video.srt" -c:v copy -c:a copy -c:s mov_text -metadata:s:s:0 language="eng" -metadata:s:s:0 handler_name="English" -id3v2_version 3 -write_id3v1 1 "subbed_video.mp4"
    
ffmpeg version N-68482-g92a596f Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Dec 16 2014 02:53:08 with gcc 4.9.2 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable
    
  libavutil      54. 15.100 / 54. 15.100
    
  libavcodec     56. 15.100 / 56. 15.100
    
  libavformat    56. 15.105 / 56. 15.105
    
  libavdevice    56.  3.100 / 56.  3.100
    
  libavfilter     5.  3.101 /  5.  3.101
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf55.34.101
    
  Duration: 01:27:44.17, start: 0.000000, bitrate: 878 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x536 [SAR 1:1 DAR 160:67], 842 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (HE-AAC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 32 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
    Stream #0:2(eng): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s (default)
    
    Metadata:
    
      handler_name    : SubtitleHandler
    
Input #1, srt, from 'video.srt':
    
  Duration: N/A, bitrate: N/A
    
    Stream #1:0: Subtitle: subrip
    
Output #0, mp4, to 'subbed_video.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf56.15.105
    
    Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x536 [SAR 1:1 DAR 160:67], q=2-31, 842 kb/s, 24 fps, 24 tbr, 12288 tbn, 12288 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 32 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
    Stream #0:2(eng): Subtitle: mov_text ([8][0][0][0] / 0x0008) (default)
    
    Metadata:
    
      handler_name    : English
    
      encoder         : Lavc56.15.100 mov_text
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
  Stream #0:2 -> #0:2 (mov_text (native) -> mov_text (native))
    
Press [q] to stop, [?] for help
    
frame=126337 fps=13751 q=-1.0 Lsize=  564499kB time=01:27:44.17 bitrate= 878.5kbits/s
    
video:541239kB audio:20564kB subtitle:39kB other streams:0kB global headers:0kB muxing overhead: 0.472881%

    The command completes sucessfully, but when I run :

    ffmpeg -i "C:\path\to\subbed_video.mp4"

    it shows :

    Stream #0:2(eng): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s (default)
    
Metadata:
    
  handler_name    : SubtitleHandler

    Even though the output from the command shows :

    Stream #0:2(eng): Subtitle: mov_text ([8][0][0][0] / 0x0008) (default)
    
Metadata:
    
  handler_name    : English
    
  encoder         : Lavc56.15.100 mov_text

    No matter what options I have tried or what order I place the -metadata tags in, this tag simply will not set with FFMPEG ? I find it really ugly to see SubtitleHandler [eng] (tx3g) (English) within my player’s menu instead of simply saying English.

    Now, I can work around this issue by using MP4BOX to embed the subtitles into my mp4’s using :

    MP4BOX -lang eng -add "video.srt:name=English" "video.mp4" -out "subbed_video.mp4"

    Adding "name=English" allows me to set the subtitle stream’s "handler_name" to "English" ; which displays perfectly in FFMPEG and MPC-HC, but the problem is that I do not want my app to be dependent on an additional external tool like MP4BOX if it can be avoided ?

    I would greatly appreciate any advice regarding how to properly set the "handler_name" tag on my subtitle stream using FFMPEG, or maybe a confirmation as to whether FFMPEG can even handle this tag seeing as it is not technically listed in FFMPEG’s valid metadata tag list ?

    P.S. As an alternative to FFMPEG, I would be willing to use AtomicParsley to set the "handler_name" as I will already be using it to set advanced metadata on the "subbed_video.mp4" after I embed the subtitles. It does seem like it would be possible to do with AtomicParsley, but I have not been able to understand half the help information with regards to setting custom ATOM’s.

    TIA !!

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