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Médias (1)
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Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (40)
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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 (...) -
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ; -
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 (...)
Sur d’autres sites (7747)
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How to set header metadata to encoded video ?
11 juin 2013, par JonaI'm encoding some images into an h264 video inside an mp4 container. I'm essentially using the ffmpeg example muxing.c. The thing is I'm trying to set some metadata in the mp4 container such as artist, title, etc...
I thought using the following would work but it didn't :
AVDictionary *opts = NULL;
av_dict_set(&opts, "title", "Super Lucky Dude", 0);
av_dict_set(&opts, "author", "Jacky Chan", 0);
av_dict_set(&opts, "album", "Chinese Movie", 0);
av_dict_set(&opts, "year", "05/10/2013", 0);
av_dict_set(&opts, "comment", "This video was created using example app.", 0);
av_dict_set(&opts, "genre", "Action", 0);
// Write the stream header, if any.
ret = avformat_write_header(oc, &opts);After the whole video is created I don't see any metadata written to the video file. Any pointers how to actually do this properly ?
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Desktop streaming to Wowza server using ffmpeg
24 avril 2013, par Gergely LukacsyRecently, I'm trying to utilize ffmpeg for streaming live desktop screen to a Wowza media server.
I have partial success on the subject so far :
I've managed to record desktop screen using the UScreenCapture directx dshow filter, and I'm also able to send this record to the server.
However, when I'm trying to send the screen directly to the server, it fails every time. The player is buffering pretty slowly, and shows a blank screen when it's done (the counter keeps counting).So, here are the working methods
for recording screen :
ffmpeg -f dshow -i video="UScreenCapture" -r 25 -vcodec libx264 output.flv
and for streaming video :
ffmpeg -re -i -map 0 -c copy -vbsf h264_mp4toannexb -f mpegts udp://stream.server.xyz:52000?pkt_size=1024
And this is the code I'm using :
ffmpeg -f dshow -i video="UScreenCapture" -s width x height -r framerate -vcodec libx264 -pix_fmt yuv420p -b:v bitrate -an -vbsf h264_mp4toannexb -f mpegts udp ://your.destination.url:PORTNUMBER ?pkt_size=some_bytes
As far as I can remember, it worked well before I upgraded wowza.
Some additional info :
- OS : win7 sp1 64bit
- ffmpeg N-49610-gc2dd5a1 (Zeranoe FFmpeg build 2013 Feb 5)
- UScreenCapture : x64 Edition Version 2.0.14
- Wowza 3.5.2 running on a Debian linux 2.6.32-5-amd64
- Flowplayer : 3.2.15
Looking trough the Wowza log files, something caught my attention. It seems when I'm streaming desktop screen, the server somhow gets uncomplete packets, but when I'm streaming a video file, the error doesn't occurs.
RTPDePacketizerMPEGTS.handleRTPPacket
WARN server comment 2013-04-11 11:26:24 - - - - - 152629.665 - - - - - - - -RTPDePacketizerMPEGTS.handleRTPPacket: Incomplete packet: 1504:1472
WARN server comment 2013-04-11 11:26:27 - - - - - 152632.782 - - - - - - - -RTPDePacketizerMPEGTS.handleRTPPacket: Incomplete packet: 1504:1472
WARN server comment 2013-04-11 11:26:31 - - - - - 152636.383 - - - - - - - -RTPDePacketizerMPEGTS.handleRTPPacket: Incomplete packet: 1504:1472
WARN server comment 2013-04-11 11:26:38 - - - - - 152643.484 - - - - - - - -RTPDePacketizerMPEGTS.handleRTPPacket: Incomplete packet: 1504:1472
WARN server comment 2013-04-11 11:26:47 - - - - - 152653.088 - - - - - - - -RTPDePacketizerMPEGTS.handleRTPPacket: Incomplete packet: 1504:1472
WARN server comment 2013-04-11 11:26:52 - - - - - 152657.587 - - - - - - - -RTPDePacketizerMPEGTS.handleRTPPacket: Incomplete packet: 1504:1472
WARN server comment 2013-04-11 11:26:56 - - - - - 152661.624 - - - - - - - -RTPDePacketizerMPEGTS.handleRTPPacket: Incomplete packet: 1504:1472
WARN server comment 2013-04-11 11:27:05 - - - - - 152670.805 - - - - - - - -RTPDePacketizerMPEGTS.handleRTPPacket: Incomplete packet: 1504:1472What causes this error ? Any ideas ?
Thanks in advance !
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Ajouter plusieurs auteurs à la fois
11 juin 2013Pouvoir ajouter plusieurs auteurs à la fois dans le formulaire d’édition que ce soit d’article, de médias etc...