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Autres articles (106)
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Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
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 (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (9886)
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ffmpeg concat with different codecs in python
14 avril 2020, par Hans Lutz van Tastiquei'm working on a videopipeline project and try to add some stuff for it.
Atm it's running fine until the code reach this point :



os.system('ffmpeg -i ' + self._rendition + ' -i ' + self._outChunk + ' -filter_complex "[0:0][1:0]concat=n=2:v=1:a=0[outv]" ' + self._tempRenditon)



There is no error message or anything else. It is used to link individual chunks with different codec parameters. After this line it's just telling me that it cant find
self._tempRendition.


Did i made an mistake with the
os.systemcall ?


thx and greetz


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FFMPEG multiple styles in .srt file
7 décembre 2020, par TimI have an SRT file and want to change the background color and level of transparency for individual tracks. Is this possible, or would I have to adopt a more advanced format ? Would this task even work in FFMPEG ?


1
0:0:1,440 --> 0:0:1,970 Y1:20
<font color="#FF1F497D">{\an2}the settlement?</font>
2
0:0:2,640 --> 0:0:3,150 Y1:20
<font color="#FFC0504D">{\an2}Yes.</font>
3
0:0:3,740 --> 0:0:4,690 Y1:20
<font color="#FFFFFFFF">{\an2}Have you been waiting long?</font>


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Remapping multiple Mp4 videos into a single one with ffmpeg
21 septembre 2016, par Josep BoschI’m interested in remapping multiple (6) MP4 videos into a high resolution final video according to lookup tables I calculated. The idea is convert 6 independent videos in a 360º video according to an equirectangular projection.
Example of equirectangular video hereIs there a way to do this remapping with ffmpeg or any other linux program ?
Right now I’m extracting all the frames from the videos, creating the equirectangular individual images and joining them again into a video. There must be a better way for this...UPDATE :
Following Mulyva’s suggestion I first remap each individual video using the remap filter. Those parts of the panoramic video not covered are interpreted like chromakey pixels using :
ffmpeg -i videos/camera1.MP4 -i camera0_map_x_radius5.pgm -i camera0_map_y_radius5.pgm -lavfi remap -qscale 1 out0.MP4
Then I try to overlay them using the chomakey filter :
ffmpeg -i out0.MP4 -i out1.MP4 -filter_complex "[1:v]chromakey=0x12da11:0.2:0.2[chromakey_res];[0:v][chromakey_res]overlay=eof_action=pass[out]" -map "[out]" out.mp4As you can see, the final result has an undesirable green shadow. Any idea of how to remove it ?
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