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Richard Stallman et le logiciel libre
19 octobre 2011, par
Mis à jour : Mai 2013
Langue : français
Type : Texte
Autres articles (68)
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Mise à jour de la version 0.1 vers 0.2
24 juin 2013, parExplications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...) -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Keeping control of your media in your hands
13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)
Sur d’autres sites (12333)
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avformat/movenc : use stream indexes when generating track ids
3 août 2024, par James Almeravformat/movenc : use stream indexes when generating track ids
In some scenarios nb_tracks isn't the same as nb_streams, so a given id may end
up being used for two separate streams.e.g. when muxing an IAMF track followed by a video track, if the IAMF track
consists of several streams, the video track would end up having an id of 2,
which may also be used by one of the IAMF streams.Signed-off-by : James Almer <jamrial@gmail.com>
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lavc/hevcdec : track local context count separately from WPP thread count
7 avril 2024, par Anton Khirnov -
ffmpeg doesn't generate a ISO/IEC 14496-17 (MPEG-4 text) track when ingesting WebVTT subtitles to produce MPEGTS
10 avril 2024, par Daniel Andres Pelaez LopezWe are trying to create a mpegts with an ISO/IEC 14496-17 (MPEG-4 text) subtitles track, using WebVTT, but seems like ffmpeg creates a ISO 13818-1 PES private data instead.


The following is the ffmpeg command :


ffmpeg -i subtitle.vtt -c:s mov_text -f mpegts output3GPP.ts

This is using the following subtitle.vtt file :


WEBVTT

00:00.000 --> 00:01.000
Subtitle 1

00:01.000 --> 00:02.000
Subtitle 2

00:02.000 --> 00:03.000
Subtitle 3

00:03.000 --> 00:04.000
Subtitle 4


And the following is the output of the ffprobe for that file :


Input #0, mpegts, from 'output3GPP.ts':
 Duration: 00:00:19.00, start: 1.400000, bitrate: 1 kb/s
 Program 1
 Metadata:
 service_name : Service01
 service_provider: FFmpeg
 Stream #0:0[0x100]: Data: bin_data ([6][0][0][0] / 0x0006)
Unsupported codec with id 98314 for input stream 0


However, if we generate an mp4, it works, the following is the command :


ffmpeg -i subtitle.vtt -c:s mov_text -f mp4 output3GPP.ts

And the following is the output of the ffprobe for that file :


Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output3GPP.ts':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2mp41
 encoder : Lavf57.83.100
 Duration: 00:00:20.00, start: 0.000000, bitrate: 0 kb/s
 Stream #0:0[0x1](und): Subtitle: mov_text (tx3g / 0x67337874), 0
kb/s (default)
 Metadata:
 handler_name : SubtitleHandler


Any reason why both commands behave differently ? is mpegts not supporting ISO/IEC 14496-17 (MPEG-4 text) ?


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