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Medias (91)
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Collections - Formulaire de création rapide
19 February 2013, by
Updated: February 2013
Language: français
Type: Picture
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Les Miserables
4 June 2012, by
Updated: February 2013
Language: English
Type: Text
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Ne pas afficher certaines informations : page d’accueil
23 November 2011, by
Updated: November 2011
Language: français
Type: Picture
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The Great Big Beautiful Tomorrow
28 October 2011, by
Updated: October 2011
Language: English
Type: Text
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Richard Stallman et la révolution du logiciel libre - Une biographie autorisée (version epub)
28 October 2011, by
Updated: October 2011
Language: English
Type: Text
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Rennes Emotion Map 2010-11
19 October 2011, by
Updated: July 2013
Language: français
Type: Text
Other articles (55)
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Multilang : améliorer l’interface pour les blocs multilingues
18 February 2011, byMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
La file d’attente de SPIPmotion
28 November 2010, byUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter; id_document, l’identifiant numérique du document original à encoder; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement; objet, le type d’objet auquel le (...) -
MediaSPIP v0.2
21 June 2013, byMediaSPIP 0.2 est la première version de MediaSPIP stable.
Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)
On other websites (7786)
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doc/APIchanges: fill in dates
7 March 2014, by Michael Niedermayer -
How to convert short video clips to TS without sound "gaps" between the segments?
10 November 2022, by ZvikaI am trying to convert a sequence of short video files from MP4 to TS using ffmpeg.
I get valid TS files, but when playing them in any HLS player, there is a noticeable short gap in the sound between segment to segment.


If I first stitch all the short video files to a single video file, and convert this file to TS while slicing it to segments, it plays perfectly fine.


To the gory details:
My software creates short video clips that should be concateenated to an output video and streamed as HLS.
Each short clip is an H.264 video file and WAV audio file (I can create other formats if needed).
I then convert each such pair of H.264+WAV to a TS file using ffmpeg:

ffmpeg -y -i seg_0.mp4 -i seg_0.wav -c:a libvo_aacenc -c:v copy -bsf:v h264_mp4toannexb seg_0.ts ffmpeg -y -i seg_1.mp4 -i seg_1.wav -c:a libvo_aacenc -c:v copy -bsf:v h264_mp4toannexb -output_ts_offset 2.01 seg_1.ts ffmpeg -y -i seg_2.mp4 -i seg_2.wav -c:a libvo_aacenc -c:v copy -bsf:v h264_mp4toannexb -output_ts_offset 4.02 seg_2.ts

etc.

and I create an appropriate M3U8 file to play all the short clips as a sequence.
The result is not satisfying, as I have audio gaps between each segment and segment, as you can hear here:
https://rnd3-temp-public.s3.amazonaws.com/HLS_4/out_seg2.m3u8


However, if I concat all the pairs together, and convert the concatenated sequence to TS, while requesting ffmpeg to slice them again to segments, using a command like:

ffmpeg -y -f concat -i mp4_list.txt -f concat -i wav_list.txt -c:a libvo_aacenc -c:v copy -bsf:v h264_mp4toannexb -flags +cgop -g 30 -hls_time 2 out2.m3u8

it plays perfectly OK, as you can hear here:
https://rnd3-temp-public.s3.amazonaws.com/HLS/out2.m3u8

How can I get a clear audio output by still encoding each segment separately? (It's crucial for my workflow)


Thanks!


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How to split a video up into 2.5GB parts with FFmpeg
2 April 2019, by Helmut SI am trying to achieve a way to send large video files through Firefox Send.
Because Firefox Send has a 2.5 GB limit per file that one sends, I need to break up a video file into parts that are each less than 2.5GB.
Is there a relatively simple way to reliably split a video based on data limits using FFmpeg, rather than using duration? (Using duration would be unreliable, because different equal length portions of a video can be different sized)
EDIT 1: I apoligize for the lack of clarity, I was planning on using a Bash script using FFmpeg and ffsend. I was wondering if there is any way to do this through video processing rather than zip compression.