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  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • MediaSPIP Player : problèmes potentiels

    22 février 2011, par

    Le lecteur ne fonctionne pas sur Internet Explorer
    Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
    Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)

Sur d’autres sites (11712)

  • Revision 6fb418741f : Inline xform_quant() in encode_block_intra(). Also inline some of the block cal

    11 juillet 2013, par Ronald S. Bultje

    Changed Paths :
     Modify /vp9/encoder/vp9_encodemb.c



    Inline xform_quant() in encode_block_intra().

    Also inline some of the block calculations to assist the compiler to
    not do silly things like calculating the same offset (or converting
    between raster/transform block offset or block, mi and pixel unit)
    many, many, many times.

    Cycle times :
    4x4 : 584 -> 505 cycles (16% faster)
    8x8 : 1651 -> 1560 cycles (6% faster)
    16x16 : 7897 -> 7704 cycles (2.5% faster)
    32x32 : 16096 -> 15852 cycles (1.5% faster)

    Overall, this saves about 0.5 seconds (1min49.8 -> 1min49.3) on the
    first 50 frames of bus (speed 0) @ 1500kbps, i.e. 0.5% overall.

    Change-Id : If3dd62453f8e2ab9d4ee616bc4ea956fb8874b80

  • Wrong second count for blackdetect filter in ffprobe

    10 avril 2016, par Jabb

    I issue this command on a 8 minutes 20 seconds video in order to detect blackframes.

    root@ubuntu:/home/hts# ffprobe -f lavfi -i "movie=test.ts,blackdetect[out0]" -show_entries tags=lavfi.black_start,lavfi.black_end -of default=nw=1

    I am expecting to get proper seconds back from ffprobe indicating where the blackframes are.

    Instead I receive very very high numbers.

    I need to mention that I cut this video from the end of a larger stream using tail. The stream is configured to add a keyframe every 0.5 seconds. Could this be the reason ? And how could I cope with this ?

    ffprobe version git-2016-03-31-54ccaae Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
    
  configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3 --enable-libmfx
    
  libavutil      55. 19.100 / 55. 19.100
    
  libavcodec     57. 33.100 / 57. 33.100
    
  libavformat    57. 29.101 / 57. 29.101
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 40.102 /  6. 40.102
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
[h264 @ 0x3222100] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x3222100] decode_slice_header error
    
[h264 @ 0x3222100] no frame!
    
[h264 @ 0x3222100] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x3222100] decode_slice_header error
    
[h264 @ 0x3222100] no frame!
    
[h264 @ 0x3222100] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x3222100] decode_slice_header error
    
[h264 @ 0x3222100] no frame!
    
[h264 @ 0x3222100] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x3222100] decode_slice_header error
    
[h264 @ 0x3222100] no frame!
    
[h264 @ 0x3222100] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x3222100] decode_slice_header error
    
[h264 @ 0x3222100] no frame!
    
[h264 @ 0x3222100] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x3222100] decode_slice_header error
    
[h264 @ 0x3222100] no frame!
    
[h264 @ 0x3222100] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x3222100] decode_slice_header error
    
[h264 @ 0x3222100] no frame!
    
[h264 @ 0x3222100] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x3222100] decode_slice_header error
    
[h264 @ 0x3222100] no frame!
    
[h264 @ 0x3222100] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x3222100] decode_slice_header error
    
[h264 @ 0x3222100] no frame!
    
[h264 @ 0x3222100] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x3222100] decode_slice_header error
    
[h264 @ 0x3222100] no frame!
    
Input #0, lavfi, from 'movie=test.ts,blackdetect[out0]':
    
  Duration: N/A, start: 78576.400000, bitrate: N/A
    
    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x256 [SAR 1:1 DAR 5:4], 25 fps, 25 tbr, 90k tbn, 90k tbc
    
TAG:lavfi.black_start=78681.9
    
TAG:lavfi.black_end=78682
    
TAG:lavfi.black_start=78720.5
    
TAG:lavfi.black_end=78721.1
    
TAG:lavfi.black_start=78761.4
    
TAG:lavfi.black_end=78762.6
    
TAG:lavfi.black_start=78770.9
    
TAG:lavfi.black_end=78771
    
TAG:lavfi.black_start=78781
    
TAG:lavfi.black_end=78781.2
    
TAG:lavfi.black_start=78801.2
    
TAG:lavfi.black_end=78801.4
    
TAG:lavfi.black_start=78821.4
    
TAG:lavfi.black_end=78821.5
    
TAG:lavfi.black_start=78851.5
    
TAG:lavfi.black_end=78851.7
    
TAG:lavfi.black_start=78871.7
    
TAG:lavfi.black_end=78871.8
    
TAG:lavfi.black_start=78891.8
    
TAG:lavfi.black_end=78892
    
TAG:lavfi.black_start=78919
    
TAG:lavfi.black_end=78919.2
    
TAG:lavfi.black_start=78949.2
    
TAG:lavfi.black_end=78949.3
    
TAG:lavfi.black_start=78979.3
    
TAG:lavfi.black_end=78979.5
    
TAG:lavfi.black_start=78999.5
    
TAG:lavfi.black_end=78999.6
    
TAG:lavfi.black_start=79022.6
    
TAG:lavfi.black_end=79022.8
    
TAG:lavfi.black_start=79042.8
    
TAG:lavfi.black_end=79043
    
TAG:lavfi.black_start=79063
    
TAG:lavfi.black_end=79063.1
    
[h264 @ 0x3260360] concealing 284 DC, 284 AC, 284 MV errors in P frame

  • Unable to get a frame using ffmpeg [closed]

    24 mars 2023, par Prakhar

    I have an SRT stream, which I am listening on an Ubuntu server. I want to be able to take a frame as a PNG at any given time, so that I can analyze that image. Given that it's a live stream, I should not be defining time of when do I want to download the frame, it should be instantaneous.

    


    I tried following but in vain

    


    ffmpeg -i 'srt://10.174.190.221:5000?streamid=ABCDE' %04d.png


    


    This just starts the streaming, and does not produce the PNG files. Output which I get on screen

    


        Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!
[h264 @ 0x7317c80] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!
[h264 @ 0x7317c80] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!
[h264 @ 0x7317c80] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!
[h264 @ 0x7317c80] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!
[h264 @ 0x7317c80] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!

Input #0, mpegts, from 'srt://10.174.190.221:5000?streamid=ABCDE':
  Duration: N/A, start: 61221.726022, bitrate: N/A
  Program 1 
    Metadata:
      service_name    : ABCDE
      service_provider: VITEC
  Stream #0:0[0x4da]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn
  Stream #0:1[0x2d](eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 128 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> png (native))
Press [q] to stop, [?] for help
Finishing stream 0:0 without any data written to it.
Output #0, image2, to '%04d.png':
  Metadata:
    encoder         : Lavf59.27.100
  Stream #0:0: Video: png, rgb24, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 59.94 fps, 59.94 tbn
    Metadata:
      encoder         : Lavc59.37.100 png
frame=    0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=   0x    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown


    


    Would appreciate any help

    


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