
Recherche avancée
Médias (3)
-
MediaSPIP Simple : futur thème graphique par défaut ?
26 septembre 2013, par
Mis à jour : Octobre 2013
Langue : français
Type : Video
-
GetID3 - Bloc informations de fichiers
9 avril 2013, par
Mis à jour : Mai 2013
Langue : français
Type : Image
-
GetID3 - Boutons supplémentaires
9 avril 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Image
Autres articles (35)
-
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
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 (...)
-
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 (...)
Sur d’autres sites (6864)
-
Playing With File
8 septembre 2011, par Multimedia Mike — GeneralI played with the ‘file’ utility a long time ago because I wanted to make it recognize a large number of multimedia formats. I had trouble getting my changes to take. But I’m prepared to try again after many years.
Aiming at the Corpus
In my local mirror of the MPlayerHQ samples archive, I find 9853 unique files. So I run all of them through the ‘file’ command :’find /path/to/samples -type f -print0 | xargs -0 file —no-pad’
My Ubuntu installation has file v5.04. I also tested against 5.07 and the latest, 5.08. Here is the number of files each version was unable to identify (generically marking as ‘data’) :
5.04 1521 5.07 1405 5.08 1501
That seems like a regression for v5.08 until I dug into the details and saw quite a few items like this, indicating that the MPEG detection could use some work :
mov/mov-demux-infinite-loop.mpg : DOS-executable ( +mov/mg-demux-infinite-loop.mpg : data
image-samples/UNeedQT4.pntg : DOS-executable ( +imY-samples/UNeedQT4.pntg : data
Workflow
These are just notes to myself and perhaps anyone else who wants to add new file formats to be identified by the ‘file’ command.First, download either the latest release from the FTP or clone from Github. Do the usual unpack, ‘./configure’, ‘make’ routine. To use this newly-built version and its associated magic file :
./src/file —magic-file magic/magic.mgc <file>
To add a new format for ID, first, run the foregoing command to ensure that it’s not already identified. Then, check over the files in magic/Magdir and see which one might pertain to what you’re doing (it’s unlikely that your format will merit a new file in this directory). For example, for this round, I modified animation, audio, iff, and riff. Add or modify existing specs based on the copious examples in the directory and by consulting the appropriate man page (‘man 5 magic’).
Finally, run ‘make’ again which will regenerate the magic file. Invoke the above command again to use the modified magic file.
Before and After
On a selection of formats taken from the samples archive (renamed and cut down to a kilobyte because detection typically only relies on the first few bytes), here is the “before” :amv : RIFF (little-endian) data armovie : data bbc-dirac : data interplay-mve : data mtv : data nintendo-thp : data nullsoft-video : data redcode : data sega-film : data smacker : data trueaudio : data vqa : IFF data wavpack : data wc3-mve : IFF data wtv : data
And the “after” :
amv : RIFF (little-endian) data, AMV armovie : ARMovie bbc-dirac : BBC Dirac Video interplay-mve : Interplay MVE Movie mtv : MTV Multimedia File nintendo-thp : Nintendo THP Multimedia nullsoft-video : Nullsoft Video redcode : REDCode Video sega-film : Sega FILM/CPK Multimedia, 320 x 224 smacker : RAD Game Tools Smacker Multimedia version 2, 320 x 200, 100 frames trueaudio : True Audio Lossless Audio vqa : IFF data, Westwood Studios VQA Multimedia, 418 video frames, 320 x 200 wavpack : WavPack Lossless Audio wc3-mve : IFF data, Wing Commander III Video, PC version wtv : Windows Television DVR Media
After rerunning ‘file’ on the mphq corpus using the modified magic file, only 1329 files remain unidentified (down from 1501).
Going Forward
As mentioned, MPEG detection could probably be strengthened. However, a major weakness is QuickTime/MP4. Many files are not detected, probably owing to the many ways that QuickTime files can begin. -
ffmpeg 'av_seek_frame()' not work in bink video
19 juillet 2020, par ghoflvhxjI trying to use ffmpeg, to play video in my game.


when i open .avi file 'av_seek_frame()' work fine.
but if change to .bik file, it never work.
the function just return 0(which mean success) and seek to start.


anyone who know about this problem ? :(
please tell me why...


i uploaded sample player and video.
this use ffmpeg and call av_seek_frame to seek like my program.
check it please.
https://drive.google.com/file/d/1DVrX3EOzjxSfEA4EYpeSREaE2RLhB28Q/view?usp=sharing


-
Using ffmpeg to change video framerate without video quality loss and keep audio ?
31 mai 2020, par JohnnyI recorded some game videos with my Samsung Galaxy S7 device. When I now add these videos to blender 3d in video editing, I get different video and audio frames.



I think, that this is an fps problem, because on every recorded video I get different fps :
59.01, 59.80 etc.



Now I want to change frame rate on all videos to 60 fps without video quality loss and keeping audio.



So I would not have any problems in video editing.



Does somebody have any tips ?