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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (96)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
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 (8646)
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Two pass high quality theora/vorbis ffmpeg encoding
25 septembre 2017, par Lea ChescottaI want to achieve the same video encoding that I had with ffmpeg2theora with standard ffmpeg, this is because i need the flexibility ffmpeg has to make the container mkv, with subtitles other than srt.
In ffmpeg2theora i have the following command that output a very high quality and very small filesize file :
$ ffmpeg2theora --videobitrate 2000 --two-pass --first-pass firstpass --speedlevel 0 --width 640 --height 360 --resize-method lanczos --noaudio input.mkv
$ ffmpeg2theora --videobitrate 2000 --two-pass --second-pass firstpass --speedlevel 0 --width 640 --height 360 --resize-method lanczos --noaudio input.mkv --output output.ogvBeing the most interesting options here i think (From ffmpeg2theora manual page) :
--two-pass
--first-pass <filename>
--second-pass <filename>
--speedlevel
encoding is faster with higher values the cost is quality and bandwidth (default 1)
</filename></filename>But i can only found a simple way to encode theora/vorbis in standard ffmpeg (from : https://trac.ffmpeg.org/wiki/TheoraVorbisEncodingGuide) :
ffmpeg -i input.mkv -codec:v libtheora -qscale:v 7 -codec:a libvorbis -qscale:a 5 output.ogv
That produces a very bad quality output even in the best quality setting (10)
How can I do a 2 pass ’high quality’/’not so big filesize’ theora/vorbis in plain ffmpeg ?
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What does Elementary Stream mean in Terms of H264
5 août 2015, par user1767754I read what an Elementary Stream is on Wikipedia. A tool i am using "Live555" is demanding "H.264 Video Elementary Stream File". So when exporting a Video from a Video Application, do i have to choose specific preferences to generate a "Elementery Stream" ?
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What is the relationship among FFmpeg, librtmp and rtmpdump ?
2 septembre 2021, par yanzhang.guoI am a beginner of FFmpeg. I can see that video can be pushed to an RTMP server by FFmpeg or librtmp on the Internet. But I also see that when compiling FFmpeg, I need to add option enable-librtmp. Are they parallel or inclusive ? What is rtmpdump ? Does the libtrmp API use RTMP lower-level functions directly ?