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Autres articles (35)
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(Dés)Activation de fonctionnalités (plugins)
18 février 2011, parPour gérer l’ajout et la suppression de fonctionnalités supplémentaires (ou plugins), MediaSPIP utilise à partir de la version 0.2 SVP.
SVP permet l’activation facile de plugins depuis l’espace de configuration de MediaSPIP.
Pour y accéder, il suffit de se rendre dans l’espace de configuration puis de se rendre sur la page "Gestion des plugins".
MediaSPIP est fourni par défaut avec l’ensemble des plugins dits "compatibles", ils ont été testés et intégrés afin de fonctionner parfaitement avec chaque (...) -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...)
Sur d’autres sites (7203)
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Trolls in trouble
6 juin 2013, par Mans — Law and libertyLife as a patent troll is hopefully set to get more difficult. In a memo describing patent trolls as a “drain on the American economy,” the White House this week outlined a number of steps it is taking to stem this evil tide. Chiming in, the Chief Judge of the … Continue reading
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Timing breaks concatenating two identical videos after one has ATEMP/SETPTS altered
25 mai 2019, par user3144514Video (B)
Copy pasted and then doubled speed with Setpts and Atempo as Video (A)Concatenating them results in a video with the (A) portion playing at the expected 2x speed, but the (B) portion playing back at 1/2 speed.
I am simply trying to speed up sections of video that are repetative and merge them back in.
I have tried doing another round of SETPTS/ATEMPO with 1.0 values, but it doesn’t alter the outcome.
I have also tried forcibly re-encoding A and B to ensure they match in formats, still no change.
Speed Change
ffmpeg -i source.mp4 -filter_complex "[0:v]setpts=0.5*PTS[v];[0:a]atempo=2.0[a]" -map "[v]" -map "[a]" A.mp4
Concatenation
ffmpeg -i A.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts x1.ts
ffmpeg -i B.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts x2.ts
ffmpeg -i "concat:x1.ts|x2.ts" -c copy -bsf:a aac_adtstoasc C.mp4Do I need to use some other method to alter the playback rate without changing some internal timing value ?
Or is there some way to fix the rates after adjusting SETPTS and ATEMPO so that the timing is restored ?
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combine specific mpeg-dash segments (ex int.mp4 + seg_1.m4s +seg_3.m4s) into one single mp4 file
16 avril 2019, par LiquidI am working one video transcoding in FFmpeg and MP4Box. Currently I am trying to combine/merge/concatenate specific MPEG-DASH video segments(m4s ex:int.mp4, seg_1.m4s, seg2,m4s,sge5.m4s) into one mp4 file.
This the example of what I am trying to do.
I have followed this thread ("Combine MPEG-DASH segments (ex, init.mp4 + segments.m4s) back to a full source.mp4 ?") but there is a problem while combining the specific m4s segments, while doing that it frames feazed in after seg2 and in seg5 it played again.
Reference : FFmpeg example