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Médias (1)
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The Great Big Beautiful Tomorrow
28 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Texte
Autres articles (24)
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Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...) -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Gestion des droits de création et d’édition des objets
8 février 2011, parPar défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;
Sur d’autres sites (1863)
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WebRTC Experiment : Chrome windows audio not sync
10 juillet 2014, par putoshopI tried to make the audio work for Chrome using this Git Repo, but I’m having a sync problem with video and audio. The audio finished playing earlier. The video seems to be correct. I noticed that when I play the blob, the audio is playing fast.
I was able to make the audio work by commenting the line the throws error in the condition that check if sampleRate is less than 22050 or greater than 96000 in RecordRTC.js.
I tried to adjust the sampleRate other values and noticed that If the sampleRate is low, the audio plays slow and if the sampleRate is high, the audio plays fast. I was able to make the audio and video somewhat sync but it seems the pitch of the audio becomes noticeable lower than the expected pitch.
I’ve also tried FFMPEG to adjust the length of the audio to match the video length, but didn’t been able to make it work.
the extensions of the files that are uploaded to the server for Chrome are .webm(video) and .wav(audio).
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Revision 245a11553a : Merge "Remove loop dering experiment." into experimental
28 mai 2013, par Paul WilkinsChanged Paths :
Modify /vp9/common/vp9_onyxc_int.h
Modify /vp9/decoder/vp9_decodframe.c
Modify /vp9/encoder/vp9_bitstream.c
Modify /vp9/encoder/vp9_onyx_if.c
Merge "Remove loop dering experiment." into experimental -
Revision b8decb0313 : Fix bugs in sb8x8 experiment/context prob update Fix bugs occur in contextual p
1er mai 2013, par Jingning HanChanged Paths :
Modify /vp9/common/vp9_blockd.h
Fix bugs in sb8x8 experiment/context prob updateFix bugs occur in contextual partition probability update, when
sb8x8 is enabled.Change-Id : I19e2cec8a54c2dafd2be2803bbfde7337a2ae45f