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Carte de Schillerkiez
13 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (100)
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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.
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
Sur d’autres sites (11289)
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Revision 32596 : minuscules et fin pour aujourd’hui
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FireFox Video throws warning but video actually works ?
21 février 2021, par SdBill- 

- OS : Ubuntu 18.04
- FF : 85.0.1
- Error/warning : Cannot play media. No decoders for requested formats : video/mp4, video/mp4








Same error for video/ogg


Here are my questions : 1) The video still plays fine once loaded, and there is no error in Chrome or Chromium. Why does the video work fine after loading but throws the error on load ? 2) Is there anything that can be done without re-encoding over 2 gigs of video ?


Context : this is an old no-profit site that used Flash for video and we really don't want to throw a lot of time at, but there are gigs of videos. I converted all .flv files and .mpg files to .mp4 using the most simple of ffmpeg commands, examples :


ffmpeg -i video-source.flv video-source.mp4
ffmpeg -i video-source.mpg video-source.mp4
ffmpeg -i video-source.mpg video-source.ogg



As I watched the ffmpeg output, it looked to me like the codec was H264 (at least, I think that is what I am seeing, not a video expert.)


Stream mapping:
 Stream #0:0 -> #0:0 (h264 (native) -> theora (libtheora))
 Stream #0:1 -> #0:1 (aac (native) -> vorbis (libvorbis))



Server response in a direct request to the mp4 files is


Content-Type
 video/mp4



I have seen the documentation and posts on fragmented mp4 and if re-encoding is the only option, we're probably going to abandon as it does play once loaded.


Code is simplistic, using an html5 doctype :


<video width="320" height="240" controls="controls">
 <source src="/images/video/mp4/video-source.mp4" type="video/mp4">
 <source src="/images/video/ogg/video-source.ogg" type="video/ogg">
 Your browser does not support the video tag.
 </source></source></video>



Is the only option here to pander to FireFox and re-encode everything since as mentioned, it plays fine once loaded and throws no error in Chrome ?