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informatique:video

Vidéo

Conversion de format

Bons articles:

Pour WEBM:

avconv -i the_video.mp4 the_video.webm

Mais c'est très lent, genre en temps réel …

Pour FLV:

avconv -i the_video.mp4 -ar 44100 the_video.flv

Beaucoup (extrêmement) plus rapide que WEBM. Obligé d'indiquer audio_rate (-ar) sinon ne se lance pas, erreur : Could not write header for output file #0 (incorrect codec parameters ?): Function not implemented

Web player

Pour le web

We need to encode our video with several different codecs so that every browser can play the one it likes. Codecs are a way to compress digital media. There are dozens of video codecs, but the ones you should know about for web videos are H.264, vp8, and theora. Each type of encoded videos is housed in a different type of container. Again, there are dozens of video containers, but for web videos you only need to know about mp4, webm, and ogg.

 <video width="400" height="225" poster="img/quickfox.jpg" controls>
    <source src="video/quickfox.mp4" type="video/mp4" />
    <source src="video/quickfox.ogg" type="video/ogg" />
    <source src="video/quickfox.webm" type="video/webm" />
 </video>

Video.js

informatique/video.txt · Dernière modification: 28/09/2016 13:19 par cyrille