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Autres articles (107)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang 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.

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 est la première version de MediaSPIP stable.
    Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

Sur d’autres sites (17362)

  • x264 encoding taking longer when encoding static frames (than

    14 septembre 2015, par Danilo

    ​Hi,
    I’m using x264 for live video streaming and I’ve noticed that the thread
    responsible for encoding uses ​​more cpu (sometimes 50% more with 1920x1080) when the video stream is frozen (i.e. : camera is sending the same frame over an over again) or when I make it encode the same image over and over again.

    This seems somewhat counter intuitive to me, as I would expect x264 to use
    more processing power when encoding complex scenes other then static ones.

    My encoder settings are the following :

    1280x720 fps=25/1 timebase=0/0 bitdepth=8 cabac=0 ref=1 deblock=1:0:0 analyse=0x3:0x113
    
me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1
    
8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=1 lookahead_threads=0
    
sliced_threads=0 slice_max_size=1190 nr=60 decimate=1 interlaced=0 bluray_compat=0
    
constrained_intra=0 bframes=0 weightp=0  keyint=1200 keyint_min=120 scenecut=40
    
intra_refresh=0 rc_lookahead=0 rc=crf mbtree=0 crf=24.0 qcomp=0.60 qpmin=0 qpmax=69
    
qpstep=4 vbv_maxrate=1024 vbv_bufsize=350 crf_max=35.0 nal_hrd=none

    I created a github gist based on the example.c encoder bundled in x264’s
    source code and tested encoding times with it. (You can find it here :
    https://gist.github.com/danilogr/ab4976ff4e0831ab274b)

    Average encoding time for the static scene is 38% bigger than for a scene
    with movements. (You can find my test case and also the output from my test
    encoder on the link above).

    ​​
    ​I’ve also noticed that by setting ​​scenecut=0, subme=0, trellis=0 and me=dia I can get rid of this problem​, but with noticeable quality​ decrease.

    ​
    ​Could anyone, please, shed some light on the reasons for this odd behavior ?
    ​Also, what can be done in order to avoid this situation without a major decrease in quality ?​

  • x264 encoding taking longer when encoding static frames (than

    14 septembre 2015, par Danilo

    ​Hi,
    I’m using x264 for live video streaming and I’ve noticed that the thread
    responsible for encoding uses ​​more cpu (sometimes 50% more with 1920x1080) when the video stream is frozen (i.e. : camera is sending the same frame over an over again) or when I make it encode the same image over and over again.

    This seems somewhat counter intuitive to me, as I would expect x264 to use
    more processing power when encoding complex scenes other then static ones.

    My encoder settings are the following :

    1280x720 fps=25/1 timebase=0/0 bitdepth=8 cabac=0 ref=1 deblock=1:0:0 analyse=0x3:0x113
    
me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1
    
8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=1 lookahead_threads=0
    
sliced_threads=0 slice_max_size=1190 nr=60 decimate=1 interlaced=0 bluray_compat=0
    
constrained_intra=0 bframes=0 weightp=0  keyint=1200 keyint_min=120 scenecut=40
    
intra_refresh=0 rc_lookahead=0 rc=crf mbtree=0 crf=24.0 qcomp=0.60 qpmin=0 qpmax=69
    
qpstep=4 vbv_maxrate=1024 vbv_bufsize=350 crf_max=35.0 nal_hrd=none

    I created a github gist based on the example.c encoder bundled in x264’s
    source code and tested encoding times with it. (You can find it here :
    https://gist.github.com/danilogr/ab4976ff4e0831ab274b)

    Average encoding time for the static scene is 38% bigger than for a scene
    with movements. (You can find my test case and also the output from my test
    encoder on the link above).

    ​​
    ​I’ve also noticed that by setting ​​scenecut=0, subme=0, trellis=0 and me=dia I can get rid of this problem​, but with noticeable quality​ decrease.

    ​
    ​Could anyone, please, shed some light on the reasons for this odd behavior ?
    ​Also, what can be done in order to avoid this situation without a major decrease in quality ?​

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    6 juillet 2020, par sarahlburke58

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