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Autres articles (63)
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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 (...) -
Contribute to documentation
13 avril 2011Documentation is vital to the development of improved technical capabilities.
MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
To contribute, register to the project users’ mailing (...) -
MediaSPIP Player : les contrôles
26 mai 2010, parLes contrôles à la souris du lecteur
En plus des actions au click sur les boutons visibles de l’interface du lecteur, il est également possible d’effectuer d’autres actions grâce à la souris : Click : en cliquant sur la vidéo ou sur le logo du son, celui ci se mettra en lecture ou en pause en fonction de son état actuel ; Molette (roulement) : en plaçant la souris sur l’espace utilisé par le média (hover), la molette de la souris n’exerce plus l’effet habituel de scroll de la page, mais diminue ou (...)
Sur d’autres sites (4294)
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Concat 2 videos preserving audio timestamp and add overlay (watermark) in single ffmpeg command
21 mars 2017, par CrisI need to perform multiple actions with ffmpeg, problem is that it seem that for add a watermark and concatenate videos I need to re-encode the video. In three steps it would take ages. So I would like to do everything I need with only one video encoding.
I have a Video #1, it has audio. Also I have a Video #2, with audio too. I would like to concat the #1 and #2 (or play #1 first, and then #2) and then add a watermark in #2 for the rest of the video, preserving audio timestamps.
I have searched a lot o internet, so far I got this :
ffmpeg -i Video1.mp4 -itsoffset 4 -i Video2.mp4 -i watermark.png -filter_complex "overlay=5:5" -codec:v libx264 -crf 21 -bf 2 -flags +cgop -pix_fmt yuv420p -codec:a aac -strict -2 -b:a 384k -r:a 48000 -movflags faststart Out.mp4
The sound from Video #2 disappeared and there’s no watermark.
I’m not well-versed in ffmpeg, nor in audio & video terminology, so I apologize for possible horrible misconceptions.
Thanks in advance.
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ffmpeg - Dynamic letters and random position watermark to video ?
7 août 2021, par sekmoI am making an online course, and to avoid piracy distribution I thought to put watermarks on the videos (including personal user information) so it cannot upload to sharing websites. Now the hard part : I would move the watermark during the video, in 3/4 random positions, every 30 seconds.
It is possibile with ffmpeg ?


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ffmpeg - Add, scale and set potision of multi watermarks by duration to video
17 mars 2017, par Thanh DaoI have a video
/path/to/video.mp4
Now I want to place each watermarks for each 6 seconds. I used command as :"ffmpeg" -i /path/to/video.mp4
-i /path/to/watermark-1.jpg \
-i /path/to/watermark-2.jpg \
-i /path/to/watermark-3.jpg \
-i /path/to/watermark-4.jpg \
-i /path/to/watermark-5.jpg \
-i /path/to/watermark-6.jpg \
-filter_complex \
"[0:0] scale=210:192 [tmp], \
[tmp][1:v] overlay=47:97:enable='between(t,0,6)' [tmp]; \
[tmp][2:v] overlay=47:97:enable='between(t,6,12)' [tmp]; \
[tmp][3:v] overlay=47:97:enable='between(t,12,18)' [tmp]; \
[tmp][4:v] overlay=47:97:enable='between(t,18,24)' [tmp]; \
[tmp][5:v] overlay=47:97:enable='between(t,24,30)' [tmp]; \
[tmp][6:v] overlay=47:97:enable='between(t,30,36)' [output]" \
-map [output] /path/to/output.mp4 2>&1I tried to scale my watermarks, but it scales the video, and the sound of video was lost.
What is my wrong ?