
Recherche avancée
Autres articles (60)
-
La file d’attente de SPIPmotion
28 novembre 2010, parUne 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 (...) -
Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs
12 avril 2011, parLa manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras. -
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 (7438)
-
Ubuntu ffmepg watermark position
8 juillet 2015, par Arnas Pečelisso I have command :
ffmpeg -i prepared/video.mp4 -i units/video_watermark.png -filter_complex overlay=main_w-overlay_w-10:main_h-overlay_h-10 -codec:a copy moved/video_test.mp4
which should describe watermark position on bottom right but the watermark appears on the bottom center. what i’m doing wrong ?
also I tried this command :
ffmpeg -i prepared/video.mp4 -vf "movie=units/video_watermark.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]" moved/output.mp4
but with it watermark was not added, video was corrupted becouse of response :
[aac @ 0x3556540] The encoder ’aac’ is experimental but experimental codecs are not enabled, add ’-strict -2’ if you want to use it.
where is the clue ?
-
pipe ffmpeg output for video preview
14 janvier 2016, par GuigI want to pipe
ffmpeg
output to be able to get it as a stream. More precisely, I have a video that is remotely hosted and I want to compute a preview and save it directly to S3.ffmpeg -i http://mywebsite.com/video.mp4 -ss 00:00:01 -vframes 1 -f image2 ~/test.jpg
works (no streaming here) but this doesn’t :
ffmpeg -i http://mywebsite.com/video.mp4 -ss 00:00:01 -vframes 1 -f image2 pipe:1 | echo > ~/Downloads/test.image2
The latest will create a 1 byte file that is obviously not the desired output. I don’t know what format
image2
is but I had to specified an output format for the streaming command to run. It works fine without streaming.Any clue ?
-
Cut videos and stack them with hstack in ffmpeg at the same time
18 juillet 2018, par ekuusiI have two videos that I want to stack with hstack. The videos are not perfectly in sync so I would like to cut a bit from the beginning of one of the videos to get them to sync perfectly. Everything works fine using two concurrent commands :
ffmpeg -ss 00:00:18 -i video1.mp4 -ss 00:00:02.000 -c:v libx264 left.mp4
followed by
ffmpeg -i left.mp4 -i right.mp4 -filter_complex hstack output.mp4
I’m wondering however if it is possible to do the trimming at the same time as stacking so that ffmpeg doesn’t have to encode the cut video twice. This would save a lot of time for me as I will be doing this cutting & merging multiple times.
I tried various ways to achieve this in one single command, but to no avail so I have to turn to the community. Thank you for helping !