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Autres articles (66)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)

  • 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 : (...)

  • Gestion de la ferme

    2 mars 2010, par

    La ferme est gérée dans son ensemble par des "super admins".
    Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
    Dans un premier temps il utilise le plugin "Gestion de mutualisation"

Sur d’autres sites (9755)

  • Why does ffmpeg remove SEI messages when converting FLV to h264 ?

    22 juin 2020, par Tunji_D

    I have an FLV file with h264 video tags. Each video tag that contains an h264 IDR NAL unit also also contains display orientation SEI, ie my NAL access unit for IDR key frames is [SEI, IDR].

    


    For some reason, converting this FLV file to h264 without the stream copy option strips away all the SEI messages from all IDR frames. In its place, right after the SPS and PPS NAL units, there's a single user unregistered data SEI.

    


    i.e using

    


    ffmpeg -i in.flv out.264


    


    gives [SPS, PPS, SEI, IDR, ...] where the SEI is :

    


    


    x264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft
2003-2018 - http://www.videolan.org/x264.html - options : cabac=1 ref=3
deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00
mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0
deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=11
lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0
bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250
keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf
mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40
aq=1:1.00

    


    


    However

    


    ffmpeg -i in.flv -c:v copy out.264


    


    preserves my SEI messages, and pretty much decodes to the raw h264 I put into the FLV muxer to generate the FLV file in the first place. Why does this happen ? Is there a flag to perform encoding but preserve SEI messages ?

    


  • Not able to generate mp4 using png and mp3 audio

    6 mars 2016, par Bhaskar Dabhi

    I am totally nob to FFMPEG.
    I am trying to generate mp4 video file by merging mp3 and png image.

    When i try converting png image into mp4 it works

    ffmpeg -r 1/5.544000 -i 1.png -qscale 2 1.mp4

    But when i add mp3 audio file then it fails

    ffmpeg -r 1/5.544000 -i 1.png -i 1.mp3 -qscale 2 1.mp4

    Following is the error that i get :

    No pixel format specified, yuv444p for H.264 encoding chosen.
    
Use -pix_fmt yuv420p for compatibility with outdated media players.
    

    
[libx264 @ 0x1475be0] using SAR=1/1
    

    
[libx264 @ 0x1475be0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    

    
`[libx264 @ 0x1475be0] profile High 4:4:4 Predictive, level 3.1, 4:4:4 8-`bit
    

    
[libx264 @ 0x1475be0] 264 - core 142 r2431 a5831aa - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    

    
[aac @ 0x1476660] The encoder 'aac' is experimental but experimental codecs are not enabled, add '-strict -2' if you want to use it.

    I tried using -strict -2 but still it fails.

    What wrong in the command ? How to create mp4 using mp3 and png ?

  • Not able to generate mp4 using png and mp3 audio

    18 juin 2019, par Bhaskar Dabhi

    I am totally nob to FFMPEG.
    I am trying to generate mp4 video file by merging mp3 and png image.

    When i try converting png image into mp4 it works

    ffmpeg -r 1/5.544000 -i 1.png -qscale 2 1.mp4

    But when i add mp3 audio file then it fails

    ffmpeg -r 1/5.544000 -i 1.png -i 1.mp3 -qscale 2 1.mp4

    Following is the error that i get :

    No pixel format specified, yuv444p for H.264 encoding chosen.
    
Use -pix_fmt yuv420p for compatibility with outdated media players.
    

    
[libx264 @ 0x1475be0] using SAR=1/1
    

    
[libx264 @ 0x1475be0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    

    
`[libx264 @ 0x1475be0] profile High 4:4:4 Predictive, level 3.1, 4:4:4 8-`bit
    

    
[libx264 @ 0x1475be0] 264 - core 142 r2431 a5831aa - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    

    
[aac @ 0x1476660] The encoder 'aac' is experimental but experimental codecs are not enabled, add '-strict -2' if you want to use it.

    I tried using -strict -2 but still it fails.

    What wrong in the command ? How to create mp4 using mp3 and png ?

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