Recherche avancée

Médias (1)

Mot : - Tags -/MediaSPIP

Autres articles (49)

  • Mise à disposition des fichiers

    14 avril 2011, par

    Par défaut, lors de son initialisation, MediaSPIP ne permet pas aux visiteurs de télécharger les fichiers qu’ils soient originaux ou le résultat de leur transformation ou encodage. Il permet uniquement de les visualiser.
    Cependant, il est possible et facile d’autoriser les visiteurs à avoir accès à ces documents et ce sous différentes formes.
    Tout cela se passe dans la page de configuration du squelette. Il vous faut aller dans l’espace d’administration du canal, et choisir dans la navigation (...)

  • Problèmes fréquents

    10 mars 2010, par

    PHP et safe_mode activé
    Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
    La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site

  • Gestion générale des documents

    13 mai 2011, par

    MédiaSPIP ne modifie jamais le document original mis en ligne.
    Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)

Sur d’autres sites (5151)

  • Stream webcam using ffmpeg/avconv to RTMP libx264 doesn't work

    15 mars 2016, par Erez Posner

    i have been trying to stream my webcam to Ustream using RTMP.

    using the standard command works great :

    "avconv -f video4linux2 -r 25 -s 320x240 -i /dev/video0 -f flv rtmp ://host/pass"

    but i encoutner a 15 seconds latency !
    therefore i decided to compress the video using libx264.
    i downloaded it and confirmed it is installed properly.
    but when running this command :

    "avconv -f video4linux2 -r 25 -s 320x240 -i /dev/video0 -c:v libx264 -pix_fmt yuv420p-f flv rtmp ://host/pass"

    on ffmpeg i get "Illegal instruction"
    and under avconv it starts to stream but nothing is shown in Ustream channel.

    output from avconv command

    avconv version 9.14-6:9.14-1rpi1rpi1, Copyright (c) 2000-2014 the
    
Libav developers
    
built on Jul 22 2014 15:08:12 with gcc 4.6 (Debian 4.6.3-14+rpi1)
    
[video4linux2 @ 0x709740] The driver changed the time per frame from 1/5 to 1/30
    
    [video4linux2 @ 0x709740] Estimating duration from bitrate, this may
    
    be inaccurate
    
    Input #0, video4linux2, from '/dev/video0':
    
      Duration: N/A, start: 5069.991764, bitrate: 36864 kb/s
    
        Stream #0.0: Video: rawvideo, yuyv422, 320x240, 36864 kb/s, 1000k    tbn, 30 tbc
    
    [libx264 @ 0x70a9e0] using cpu capabilities: none!
    
    [libx264 @ 0x70a9e0] profile High, level 1.2
    
    [libx264 @ 0x70a9e0] 264 - core 130 r2282 1db4621 - H.264/MPEG-4 AVC
    
    codec - Copyleft 2003-2013 - 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=1 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=5 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=1.25
    
    aq=1:1.00
    
    Output #0, flv, to
    
    'rtmp:host/pass:
    
      Metadata:
    
        encoder         : Lavf54.20.4
    
        Stream #0.0: Video: libx264, yuv420p, 320x240, q=-1--1, 1k tbn, 5 tbc
    
    Stream mapping:
    
      Stream #0:0 -> #0:0 (rawvideo -> libx264)
    
    Press ctrl-c to stop encoding
    
    frame=   44 fps=  3 q=23.0 size=      26kB time=0.20
    
    bitrate=1071.8kbits/s    bits/s

    what could be the problem ?
    thank you in advanced

  • Stream from MP4 file over RTSP with ffserver

    25 octobre 2019, par sirlion

    I’m trying to stream a mp4 file over RTSP using ffserver with no luck so far. I just want to stream directly from the file, without feeding from ffmpeg (no transcoding involved). But I’ve made it work with mpg video.

    Here is my ffserver config file :

    Port 8090
    
BindAddress 0.0.0.0
    
MaxHTTPConnections 2000
    
MaxClients 1000
    
MaxBandwidth 500000
    
CustomLog -
    
NoDaemon
    

    
RTSPPort 7654
    
RTSPBindAddress 0.0.0.0
    

    
<stream>
    
    Format rtp
    
    File "/home/g/video_streaming/sample3-mpeg2.mpg"
    
</stream>
    
<stream>
    
    Format rtp
    
    File "/home/g/video.mp4"
    
</stream>

    When I launch ffserver, everything seems fine based on the log output :

    $ ./dev/ffmpeg/ffserver -f ffserver-sample.conf
    
ffserver version N-45673-gd0c27e8 Copyright (c) 2000-2012 the FFmpeg developers
    
  built on Oct 18 2012 10:36:52 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
    
  configuration:
    
  libavutil      51. 76.100 / 51. 76.100
    
  libavcodec     54. 66.100 / 54. 66.100
    
  libavformat    54. 33.100 / 54. 33.100
    
  libavdevice    54.  3.100 / 54.  3.100
    
  libavfilter     3. 19.103 /  3. 19.103
    
  libswscale      2.  1.101 /  2.  1.101
    
  libswresample   0. 16.100 /  0. 16.100
    
Thu Oct 18 11:54:22 2012 Opening file '/home/g/video.mp4'
    
Thu Oct 18 11:54:22 2012 Opening file '/home/g/video.mp4'
    
Thu Oct 18 11:54:23 2012 Opening file '/home/g/video_streaming/sample3-mpeg2.mpg'
    
Thu Oct 18 11:54:23 2012 [mpeg @ 0x1dae3c0]max_analyze_duration 5000000 reached at 5005000
    
Thu Oct 18 11:54:23 2012 Opening file '/home/g/video_streaming/sample3-mpeg2.mpg'
    
Thu Oct 18 11:54:23 2012 [mpeg @ 0x1dae3c0]max_analyze_duration 5000000 reached at 5005000
    
Thu Oct 18 11:54:23 2012 FFserver started.

    Finally, if I run ffplay in order to test the server, everything works fine for the mpg file, but not for the mp4 :

    $ ffplay rtsp://192.168.1.99:7654/test2-rtsp
    
ffplay version N-45656-g916352f Copyright (c) 2003-2012 the FFmpeg developers
    
  built on Oct 17 2012 16:14:14 with gcc 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5.1)
    
  configuration:
    
  libavutil      51. 76.100 / 51. 76.100
    
  libavcodec     54. 66.100 / 54. 66.100
    
  libavformat    54. 33.100 / 54. 33.100
    
  libavdevice    54.  3.100 / 54.  3.100
    
  libavfilter     3. 19.103 /  3. 19.103
    
  libswscale      2.  1.101 /  2.  1.101
    
  libswresample   0. 16.100 /  0. 16.100
    
rtsp://192.168.1.99:7654/test2-rtsp: Invalid data found when processing input
    

    
Server's output:
    

    
Thu Oct 18 11:57:51 2012 FFserver started.
    
Thu Oct 18 11:58:01 2012 192.168.1.101 - - [DESCRIBE] "rtsp://192.168.1.99:7654/test2-rtsp RTSP/1.0" 200 167
    
Segmentation fault (core dumped)

    I don’t really know what I could be missing. I’ve just read in the official doc that streaming from a file is kind of broken. Since I don’t really know if that’s up to date, I decided to give it a try here.

    Any help or suggestions ? Alternatives ?

  • ffmpeg filter complex maybe too long from my script

    8 novembre 2023, par iceget

    i am using ffmepg and filter complex to blend 2 png files for a exact time.&#xA;if i use a too long time (short commands working) then the output file has only 1kb and is not openable.

    &#xA;

    i have added here my code was is not working, can anybody helps me ?

    &#xA;

    i getting this back

    &#xA;

    code :

    &#xA;

    ffmpeg -loop 1 -t 0.2225 -i /tmp/a.png -loop 1 -t 0.2225 -i /tmp/b.png -s 640x480 -to 256 -c:v libx264 -pix_fmt yuv420p -filter_complex " \&#xA;[1:v][0:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b1v]; \&#xA;[0:v][1:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b2v]; \&#xA;[1:v][0:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b3v]; \&#xA;[0:v][1:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b4v]; \&#xA;[1:v][0:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b5v]; \&#xA;[0:v][1:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b6v]; \&#xA;[1:v][0:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b7v]; \&#xA;[0:v][1:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b8v]; \&#xA;[1:v][0:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b9v]; \&#xA;[0:v][1:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b10v]; \&#xA;[1:v][0:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b11v]; \&#xA;[0:v][1:v]blend=all_expr=&#x27;A*(if(gte(T,0.2225),1,T/0.2225))&#x2B;B*(1-(if(gte(T,0.2225),1,T/0.2225)))&#x27;[b12v]; \&#xA;...&#xA;[1:v][b988v][0:v][b989v][1:v][b990v][0:v][b991v][1:v][b992v][0:v][b993v][1:v][b994v][0:v][b995v][1:v][b996v][0:v][b997v][1:v][b998v][0:v][b999v][1:v][b1000v][0:v][b1001v][1:v][b1002v][0:v][b1003v][1:v][b1004v][0:v][b1005v][1:v][b1006v][0:v][b1007v][1:v][b1008v][0:v][b1009v][1:v][b1010v][0:v][b1011v][1:v][b1012v][0:v][b1013v][1:v][b1014v][0:v][b1015v][1:v][b1016v][0:v][b1017v][1:v][b1018v][0:v][b1019v][1:v][b1020v][0:v][b1021v][1:v][b1022v][0:v][b1023v][1:v][b1024v]&#xA;[0:v]concat=n=2049:v=1:a=0,format=yuv420p[v]" -map "[v]" /tmp/test.mp4&#xA;

    &#xA;

    the output is then this :

    &#xA;

    ...&#xA;  Stream #1:0 (png) -> concat:in2038:v0&#xA;  Stream #1:0 (png) -> concat:in2042:v0&#xA;  Stream #1:0 (png) -> concat:in2046:v0&#xA;  format -> Stream #0:0 (libx264)&#xA;Press [q] to stop, [?] for help&#xA;[libx264 @ 0x563a0f537380] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512&#xA;[libx264 @ 0x563a0f537380] profile High, level 3.0&#xA;[libx264 @ 0x563a0f537380] 264 - 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=6 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&#xA;Output #0, mp4, to &#x27;/tmp/test.mp4&#x27;:&#xA;  Metadata:&#xA;    encoder         : Lavf58.20.100&#xA;    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 640x480, q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)&#xA;    Metadata:&#xA;      encoder         : Lavc58.35.100 libx264&#xA;    Side data:&#xA;      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1&#xA;Get&#xF6;tet   3 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x&#xA;&#xA;

    &#xA;

    i create the filter complex by php with a for loop for creating the final syntax for ffmpeg.

    &#xA;

    getting at the end of the command (debug log) :

    &#xA;

    [auto_scaler_2044 @ 0x560f0db26c40] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2&#xA;[auto_scaler_2045 @ 0x560f144cf240] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2&#xA;[Parsed_blend_1022 @ 0x560f19f96d00] [framesync @ 0x560f19f96e08] Selected 1/25 time base&#xA;[Parsed_blend_1022 @ 0x560f19f96d00] [framesync @ 0x560f19f96e08] Sync level 2&#xA;[auto_scaler_3071 @ 0x560f18cf8a40] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2&#xA;[auto_scaler_2046 @ 0x560f0db27180] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2&#xA;[auto_scaler_2047 @ 0x560f144d00c0] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2&#xA;[Parsed_blend_1023 @ 0x560f19f97400] [framesync @ 0x560f19f97508] Selected 1/25 time base&#xA;[Parsed_blend_1023 @ 0x560f19f97400] [framesync @ 0x560f19f97508] Sync level 2&#xA;[auto_scaler_3072 @ 0x560f18cf90c0] w:640 h:480 fmt:pal8 sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x2&#xA;[scaler_out_0_0 @ 0x560f1a625140] w:640 h:480 fmt:yuv420p sar:0/1 -> w:640 h:480 fmt:yuv420p sar:0/1 flags:0x4&#xA;[libx264 @ 0x560f19103180] using mv_range_thread = 40&#xA;[libx264 @ 0x560f19103180] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512&#xA;[libx264 @ 0x560f19103180] profile High, level 3.0&#xA;[libx264 @ 0x560f19103180] 264 - 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=6 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&#xA;Output #0, mp4, to &#x27;/tmp/test.mp4&#x27;:&#xA;  Metadata:&#xA;    encoder         : Lavf58.20.100&#xA;    Stream #0:0, 0, 1/12800: Video: h264 (libx264), 1 reference frame (avc1 / 0x31637661), yuv420p, 640x480, 0/1, q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)&#xA;    Metadata:&#xA;      encoder         : Lavc58.35.100 libx264&#xA;    Side data:&#xA;      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1&#xA;Clipping frame in rate conversion by 0.000008&#xA;cur_dts is invalid (this is harmless if it occurs once at the start per stream)&#xA;cur_dts is invalid (this is harmless if it occurs once at the start per stream) 0x&#xA;cur_dts is invalid (this is harmless if it occurs once at the start per stream) 0x&#xA;cur_dts is invalid (this is harmless if it occurs once at the start per stream) 0x&#xA;Get&#xF6;tet&#xA;

    &#xA;

    is that the problem ?

    &#xA;

    i have also tried with filter complex script, but the same error appears.

    &#xA;

    thank you so much

    &#xA;

    many greets iceget

    &#xA;

    if i use a shorter time (about 10 seconds) then its working fine. but when i add 100 or 256 seconds, then i getting only a 1kb mp4 file.

    &#xA;

    thank you

    &#xA;

Navigation