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Autres articles (49)
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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 -
Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...) -
Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
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GOP structure via FFmpeg
25 septembre 2015, par SerhanI have two questions regarding the Group-of-Pictures (GOP) in MPEG4 Video (both for MPEG4 Part2 and H.264) :
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How can I extract the GOP structure and size of a video sequence using FFmpeg ? I know that the
av_get_picture_type_char
function of theAVPicture
struct yields picture types for each frame, but I wonder if there is a more direct method to obtain the GOP information ? -
How can I detect whether the sequence has open GOPs or closed GOPs, i.e. whether B frames from one GOP are allowed to refer to the I and P frames in an adjacent GOP ?
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GOP structure via FFmpeg
17 juillet 2021, par chronosynclasticI have two questions regarding the Group-of-Pictures (GOP) in MPEG4 Video (both for MPEG4 Part2 and H.264) :



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How can I extract the GOP structure and size of a video sequence using FFmpeg ? I know that the
av_get_picture_type_char
function of theAVPicture
struct yields picture types for each frame, but I wonder if there is a more direct method to obtain the GOP information ? -
How can I detect whether the sequence has open GOPs or closed GOPs, i.e. whether B frames from one GOP are allowed to refer to the I and P frames in an adjacent GOP ?






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ffmpeg and windows command line
6 janvier 2013, par Kasper DKI am trying to use ffmpeg for windows to convert thousands of images and sounds to a single video file.
ffmpeg -i apples.jpg -i oranges.jpg -i orangessound.wav -i bananas.jpg -vcodec mpeg4 test.avi
My delphi program generates the command line as a string, and I use shellexecute to call it.
But is it true that a command line cannot be longer than 8191 characters ? If so, can ffmpeg read the parameters from a file instead ?
It is not possible in this case to rename the pictures with consecutive numbers