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  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

Sur d’autres sites (13048)

  • 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

    


  • 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

  • ffmpeg : Time information does not match video duration

    8 novembre 2017, par Harry Developer

    I’m using tvheadend to record broadcasts to disc (running ubuntu). Later, I’m playing the files using players like MX Videoplayer or IJK player. Sometimes, the time information of the media files is weired. E.g., using

    ffprobe -i some-file.ts

    shows a lenght of 10 hours or even 20 hours, although the recording is only 2 hours long. Is this a ffmpeg bug ? What can be done to get the correct media length ?

    Here is the ffprobe output of the original file after recording it on disc :

    ffprobe version N-85175-ga434657 Copyright (c) 2007-2017 the FFmpeg developers
    
  built with gcc 4.9.2 (Raspbian 4.9.2-10)
    
  configuration:
    
  libavutil      55. 59.100 / 55. 59.100
    
  libavcodec     57. 90.100 / 57. 90.100
    
  libavformat    57. 72.100 / 57. 72.100
    
  libavdevice    57.  7.100 / 57.  7.100
    
  libavfilter     6. 83.100 /  6. 83.100
    
  libswscale      4.  7.100 /  4.  7.100
    
  libswresample   2.  8.100 /  2.  8.100
    
[mp3 @ 0x24caef0] Header missing
    
[mpeg2video @ 0x24817b0] Invalid frame dimensions 0x0.
    
[mp3 @ 0x24caef0] Header missing
    
    Last message repeated 1 times
    
[mpeg2video @ 0x24817b0] Invalid frame dimensions 0x0.
    
    Last message repeated 3 times
    
[mp3 @ 0x24caef0] Header missing
    
    Last message repeated 1 times
    
[mpeg2video @ 0x24817b0] Invalid frame dimensions 0x0.
    
    Last message repeated 1 times
    
[mp3 @ 0x24caef0] Header missing
    
    Last message repeated 1 times
    
[mpeg2video @ 0x24817b0] Invalid frame dimensions 0x0.
    
    Last message repeated 1 times
    
[mp3 @ 0x24caef0] Header missing
    
    Last message repeated 1 times
    
[mpeg2video @ 0x24817b0] Invalid frame dimensions 0x0.
    
[mp3 @ 0x24caef0] Header missing
    
    Last message repeated 9 times
    
[mpeg2video @ 0x24817b0] Invalid frame dimensions 0x0.
    
    Last message repeated 1 times
    
[mp3 @ 0x24caef0] Header missing
    
    Last message repeated 1 times
    
[mpeg2video @ 0x24817b0] Invalid frame dimensions 0x0.
    
[mp3 @ 0x24caef0] Header missing
    
    Last message repeated 11 times
    
[mpeg2video @ 0x24817b0] Invalid frame dimensions 0x0.
    
[mp3 @ 0x24caef0] Header missing
    
    Last message repeated 318 times
    
[mpegts @ 0x247cd40] decoding for stream 4 failed
    
[mpegts @ 0x247cd40] start time for stream 3 is not set in estimate_timings_from_pts
    
[mpegts @ 0x247cd40] PES packet size mismatch
    
    Last message repeated 2 times
    
[mpegts @ 0x247cd40] Could not find codec parameters for stream 4 (Audio: mp3, 0 channels, s16p): unspecified frame size
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
Input #0, mpegts, from '30d0b11f21ce831b56cc306d9c4a18c0.backup':
    
  Duration: 10:03:33.54, start: 60774.296367, bitrate: 1883 kb/s
    
  Program 12101
    
    Metadata:
    
      service_name    : ?RTL Television
    
      service_provider: ?Unitymedia
    
    Stream #0:0[0x20b]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    
Stream #0:1[0x20c](ger): Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz, stereo, s16p, 192 kb/s
    
Stream #0:2[0x20d](ger): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, stereo, fltp, 384 kb/s
    
Stream #0:3[0x60f](ger): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
    
  No Program
    
Stream #0:4[0x210]: Audio: mp3, 0 channels, s16p

    Here is the output of ffprobe somefile -show_entries stream=index,start_time,duration -of compact -v 0 :

    program|stream|index=0|start_time=88858.718567|duration=8129.120000
    
stream|index=1|start_time=88858.104267|duration=8129.496000
    
stream|index=2|start_time=88858.104289|duration=8129.498833
    
stream|index=3|start_time=60774.296367|duration=36213.542200
    

    
stream|index=0|start_time=88858.718567|duration=8129.120000
    
stream|index=1|start_time=88858.104267|duration=8129.496000
    
stream|index=2|start_time=88858.104289|duration=8129.498833
    
stream|index=3|start_time=60774.296367|duration=36213.542200
    
stream|index=4|start_time=60774.296367|duration=8129.520000

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