
Recherche avancée
Autres articles (31)
-
Encodage et transformation en formats lisibles sur Internet
10 avril 2011MediaSPIP transforme et ré-encode les documents mis en ligne afin de les rendre lisibles sur Internet et automatiquement utilisables sans intervention du créateur de contenu.
Les vidéos sont automatiquement encodées dans les formats supportés par HTML5 : MP4, Ogv et WebM. La version "MP4" est également utilisée pour le lecteur flash de secours nécessaire aux anciens navigateurs.
Les documents audios sont également ré-encodés dans les deux formats utilisables par HTML5 :MP3 et Ogg. La version "MP3" (...) -
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" ; -
Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users.
Sur d’autres sites (4046)
-
html5 video client side optimization
3 décembre 2014, par Withfriendship HioxI am using flowplayer and doing video quality selection as in the following page :
User choose a quality and plays the video like 160p, 260p, 530p etc depending on their Internet speed to load the video quickly. However in the server side I have to encode the original video using Ffmpeg into each of these resolutions and store them.
So it doing like video_1234_low.mp4, video_1234_mid.mp4, video_1234_high.mp4, etc. and switch the source to that video depending on which the user selects. This consumes a lot of drive space for large videos.
Is there any possibility to load the video quickly without storing these files. Dynamic conversion on demand is difficult because it takes time. I wonder is there any client side trick to reduce the download size and play low quality video.
-
Connection between ffmpeg and ffplay
26 juin 2013, par UserOfStackoverflowLet's say that ffmpeg is on computer "A" and ffplay is on computer "B". I want to stream from computer "A" to computer "B" using UDP, but I'm a bit confused since both applications (ffmpeg and ffplay) requires IP and Port. I'm confused because usually when two programs connects through the internet, one application requires IP and Port while another application requires only a Port. My question is, what IP address should I write to ffmpeg and what IP address should I write to ffplay ? Also does both applications should use same Port ?
-
How to convert AC3 audio to Wav audio ?
18 janvier 2023, par Joey JoestarI would like to convert a AC3 audio file (ATSC A/52 aka AC-3 aka Dolby Digital stream 6 channels) to Wave audio file (16khz mono/1 channel).


While searching on the internet, a lot of people just used
ffmpeg -i file.ac3 file.wav
however, i'm not sure if that even works.

I keep getting


[ac3 @ 0x55ac1a0b0660] exponent -1 is out-of-rangets/s speed= 125x
[ac3 @ 0x55ac1a0b0660] error decoding the audio block
[ac3 @ 0x55ac1a0b0660] frame sync error
Error while decoding stream #0:0: Invalid data found when processing input
etc



while I do the same command.
How do I convert ac3 to wav (16khz mono) ?


*Note :
I also tried
ffmpeg -i file.ac3 -codec:a:1 ac3 -codec copy -b:a 384 file.wav -ac 1 -ar 16000
. But this doesn't output an actual wav file.