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

  9 mars 2021, 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 !!

  


• Connection timed out error for ffmpeg libraries installation

  12 mai 2015, par Kiran Kumar Dash

  I am trying to compile ffmpeg on my centos server. Here is the link I am using as a reference :

  https://trac.ffmpeg.org/wiki/CompilationGuide/Centos

  Here is the command I entered :

  git clone --depth 1 git://source.ffmpeg.org/ffmpeg

  And this is the error message that popped up

  Initialized empty Git repository in /root/ffmpeg_sources/ffmpeg/.git/
  
  source.ffmpeg.org[0: 2a01:e0d:1:3:58bf:fa76:0:1]: errno=Connection timed out
  
  source.ffmpeg.org[0: 88.191.250.118]: errno=Connection timed out
  
  fatal: unable to connect a socket (Connection timed out)

  PLease help why is it coming and what can be done to avoid

• Anomalie #3894 : Jointures (erronées ?) avec les boucles documents et leurs critères

  26 janvier 2017, par tcharlss (*´_ゝ｀)

  J’ai testé avec divers objets que j’avais sous la main pour voir, on reprenant le même procédé :

  • un document attaché à 2 objets, vu=oui pour le N°1, et vu=non pour le N°2
  • id_patate=1 dans l’URL
  • {id_patate?}{vu=non} dans la boucle

  Ça n’a fait la bonne jointure que pour 1 seul objet, donc c’est plutôt une exception on dirait.
  Rigolo : le nom de la jointure superflue s’incrémente entre chaque test, j’ai fini à L8 ! (L5 je l’ai enlevé, c’était sur les auteurs, donc même ambiguïté que pour les mots clés)

  Album [OK] :¶

  SELECT documents.fichier
  FROM spip_documents AS `documents`  
  INNER JOIN spip_documents_liens AS L1 ON ( L1.id_document = documents.id_document )
  WHERE (documents.taille > 0 OR documents.distant=’oui’)
      AND (L1.id_objet = 1)
      AND (L1.objet = ’album’)
      AND (L1.vu = ’non’)
  GROUP BY documents.id_document
  

  Brève [PAS OK] :¶

  SELECT documents.fichier
  FROM spip_documents AS `documents`  
  INNER JOIN spip_documents_liens AS L2 ON ( L2.id_document = documents.id_document ) 
  INNER JOIN spip_documents_liens AS L1 ON ( L1.id_document = documents.id_document )
  WHERE (documents.taille > 0 OR documents.distant=’oui’)
      AND (L2.id_objet = 1)
      AND (L2.objet = ’breve’)
      AND (L1.vu = ’non’)
  GROUP BY documents.id_document
  

  Forum [PAS OK] :¶

  SELECT documents.fichier
  FROM spip_documents AS `documents`  
  INNER JOIN spip_documents_liens AS L3 ON ( L3.id_document = documents.id_document ) 
  INNER JOIN spip_documents_liens AS L1 ON ( L1.id_document = documents.id_document )
  WHERE (documents.taille > 0 OR documents.distant=’oui’)
      AND (L3.id_objet = 1)
      AND (L3.objet = ’forum’)
      AND (L1.vu = ’non’)
  GROUP BY documents.id_document
  

  Mot [PAS OK] (là c’est un peu spécial car il y a une ambiguïté avec mots_liens) :¶

  SELECT documents.fichier
  FROM spip_documents AS `documents`  
  INNER JOIN spip_mots_liens AS L4 ON ( L4.id_objet = documents.id_document AND L4.objet=’document’) 
  INNER JOIN spip_documents_liens AS L1 ON ( L1.id_document = documents.id_document )
  WHERE (documents.taille > 0 OR documents.distant=’oui’)
      AND (L4.id_mot = 1)
      AND (L1.vu = ’non’)
  GROUP BY documents.id_document
  

  Abonnement [PAS OK] :¶

  SELECT documents.fichier
  FROM spip_documents AS `documents`  
  INNER JOIN spip_documents_liens AS L6 ON ( L6.id_document = documents.id_document ) 
  INNER JOIN spip_documents_liens AS L1 ON ( L1.id_document = documents.id_document )
  WHERE (documents.taille > 0 OR documents.distant=’oui’)
      AND (L6.id_objet = 1)
      AND (L6.objet = ’abonnement’)
      AND (L1.vu = ’non’)
  GROUP BY documents.id_document
  

  Ticket [PAS OK] :¶

  SELECT documents.fichier
  FROM spip_documents AS `documents`  
  INNER JOIN spip_documents_liens AS L7 ON ( L7.id_document = documents.id_document ) 
  INNER JOIN spip_documents_liens AS L1 ON ( L1.id_document = documents.id_document )
  WHERE (documents.taille > 0 OR documents.distant=’oui’)
      AND (L7.id_objet = 1)
      AND (L7.objet = ’ticket’)
      AND (L1.vu = ’non’)
  GROUP BY documents.id_document
  

  Adresse [PAS OK] :¶

  SELECT documents.fichier
  FROM spip_documents AS `documents`  
  INNER JOIN spip_documents_liens AS L8 ON ( L8.id_document = documents.id_document ) 
  INNER JOIN spip_documents_liens AS L1 ON ( L1.id_document = documents.id_document )
  WHERE (documents.taille > 0 OR documents.distant=’oui’)
      AND (L8.id_objet = 1)
      AND (L8.objet = ’adresse’)
      AND (L1.vu = ’non’)
  GROUP BY documents.id_document