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Autres articles (111)
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Gestion générale des documents
13 mai 2011, parMédiaSPIP ne modifie jamais le document original mis en ligne.
Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...) -
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. -
Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)
Sur d’autres sites (9425)
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Automatic encoder selection failed for output stream #0:0 [duplicate]
2 octobre 2016, par mgt1234This question already has an answer here :
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recompile ffmpeg with libmp3lame
1 answer
I use this command on ffmpeg :
/usr/local/bin/ffmpeg -ss 40 -t 40 -i mymusic.mp3 -ab 15 voice.mp3 2>&1
but I see this error :
Automatic encoder selection failed for output stream #0:0. Default encoder for format mp3 (codec png) is probably disabled. Please choose an encoder manually. Error selecting an encoder for stream 0:0
Also lamemp3 installed and enabled, how can I fix it ?
this is complete output :
ffmpeg version N-81842-g0fbd423 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-17)
configuration: --enable-decoder=png --enable-encoder=png
libavutil 55. 32.100 / 55. 32.100
libavcodec 57. 60.101 / 57. 60.101
libavformat 57. 51.102 / 57. 51.102
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 63.100 / 6. 63.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 2.100 / 2. 2.100
[mp3 @ 0x3ccd3c0] Estimating duration from bitrate, this may be inaccurate
Input #0, mp3, from 'mymusic.mp3':
Metadata:
album_artist : .:.:. WWW.NEWSONG3.COM .:.:.
title : Eshtebah .:.:. WWW.NEWSONG3.COM .:.:.
artist : Abolfazl Fallah .:.:. WWW.NEWSONG3.COM .:.:.
album : .:.:. WWW.NEWSONG3.COM .:.:.
comment : .:.:. WWW.NEWSONG3.COM .:.:.
genre : .:.:. WWW.NEWSONG3.COM .:.:.
track : .:.:. WWW.NEWSONG3.COM .:.:.
copyright : .:.:. WWW.NEWSONG3.COM .:.:.
TOPE : .:.:. WWW.NEWSONG3.COM .:.:.
composer : .:.:. WWW.NEWSONG3.COM .:.:.
TBPM : .:.:. WWW.NEWSONG3.COM .:.:.
TIT3 : .:.:. WWW.NEWSONG3.COM .:.:.
encoded_by : .:.:. WWW.NEWSONG3.COM .:.:.
disc : .:.:. WWW.NEWSONG3.COM .:.:.
MusicMatch_Mood : .:.:. WWW.NEWSONG3.COM .:.:.
date : 2013
Duration: 00:04:08.77, start: 0.000000, bitrate: 129 kb/s
Stream #0:0: Audio: mp3, 48000 Hz, stereo, s16p, 128 kb/s
Stream #0:1: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 300x300 [SAR 96:96 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
Metadata:
comment : Cover (front)
Automatic encoder selection failed for output stream #0:0. Default encoder for format mp3 (codec png) is probably disabled. Please choose an encoder manually.
Error selecting an encoder for stream 0:0 -
recompile ffmpeg with libmp3lame
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fate/colorkey : disable audio stream.
30 août 2016, par Nicolas Georgefate/colorkey : disable audio stream.
The test is not supposed to cover audio.
Also, using -vframes along with an audio stream depends on
the exact order the frames are processed by filters, it is
too much constraint to guarantee. -
GOP size for realtime video stream
7 janvier 2017, par MadMassI’m working on a kind of rich remote desktop system, with a video stream of the desktop encoded using avcodec/x264. I have to set manually the GOP size for the stream, and so far I was using a size of fps/2.
But I’ve just read the following on Wikipedia :This structure [Group Of Picture@ suggests a problem because the fourth frame (a P-frame) is needed in order to predict the second and the third (B-frames). So we need to transmit the P-frame before the B-frames and it will delay the transmission (it will be necessary to keep the P-frame).
It means I’m creating a lot of latency since the client needs to receive at least half of the GOP to output the first frame following the I frame. What is the best strategy for the GOP size if I want the smallest latency possible ? A gop of 1 picture ?