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  • Les autorisations surchargées par les plugins

    27 April 2010, by

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Other interesting software

    13 April 2011, by

    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: (...)

  • Prérequis à l’installation

    31 January 2010, by

    Préambule
    Cet article n’a pas pour but de détailler les installations de ces logiciels mais plutôt de donner des informations sur leur configuration spécifique.
    Avant toute chose SPIPMotion tout comme MediaSPIP est fait pour tourner sur des distributions Linux de type Debian ou dérivées (Ubuntu...). Les documentations de ce site se réfèrent donc à ces distributions. Il est également possible de l’utiliser sur d’autres distributions Linux mais aucune garantie de bon fonctionnement n’est possible.
    Il (...)

On other websites (4566)

  • ffplay how to change the seek interval

    29 January 2021, by oliopti

    I am completing a project in which I need to isolate single frames and their time stamps. I am using ffplay. using the "s" key I am able to stepwise move forward frame by frame. However when I try to move backwards a frame it jumps back 10 seconds. Is there a way to change this default based on my fps that the video was recorded at in order to jump back frame by frame?
There seems to be a command including seek_interval, but limited documentation on how to implement this for a 25fps video file.
Thank you!

    


  • Why ffmpeg-split AVI movie freezes when played

    29 September 2015, by bl4ck5un

    I used ffmpeg to split AVI movies like

    ffmpeg -i input.avi -vcodec copy -acodec copy -ss 00:22:33 -to 1:2:3 out.avi

    But the output file out.avi is sometimes weird when played (in MPlayerX, for example) — it will stop at the first frame, freezing like a picture, but if I drag the process bar forward, then continue playing at a different place, everything would be fine and the video just goes on smoothly.

    I have limited knowledge on AVI format and ffmpeg, can you guys point out what’s the problem here? If it’s a matter of kerFrame or what?

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

    22 June 2020, by 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?

    


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