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Médias (1)

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Autres articles (21)

  • MediaSPIP Core : La Configuration

    9 novembre 2010, par

    MediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
    Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

Sur d’autres sites (2866)

  • Converting Real Media with ffmpeg

    7 août 2013, par Eric Arenson

    I have a number of old crusty Real Media files I need to convert and was hoping to write a script to batch process them. I'm able to do a Real Media -> AVI conversion with FFMpegX, but when I try to replicate the conversion with ffmpeg, it always errors out with something like :

    [avi @ 0x10084fa00] Too large number of skipped frames 117425 > 60000

    It may have something to do with the funky format of these Real Media files :

    Duration: 01:28:23.42, start: 0.000000, bitrate: 448 kb/s
    
    Stream #0:0: Data: none, 32 kb/s
    
    Stream #0:1: Data: none, 192 kb/s
    
    Stream #0:2: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:3: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:4: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 8 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:5: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:6: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 27 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:7: Audio: cook (cook / 0x6B6F6F63), 22050 Hz, mono, fltp, 32 kb/s
    
    Stream #0:8: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 192 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:9: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 136 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:10: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:11: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:12: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:13: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:14: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:15: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc

    Does anyone have any tips on either how to find out what FFMpegX is doing to make the conversion work, or a better way to go about using ffmpeg to do this ?

    EDIT

    Including the ffmpeg command (thank you to @Mondain for teaching me about the stream mapping !) and output :

    Command :

    ffmpeg -i cc121307pm.rm -map 0:8 -map 0:7 -c:v libx264 -c:a libfaac -b:a 32k test.avi

    Output :

    ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Aug  7 2013 12:29:30 with gcc 4.2.1 (GCC) (Apple Inc. build 5664)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=/usr/bin/gcc-4.2 --host-cflags='-Os -w -pipe -march=core2 -msse4.1 -mmacosx-version-min=10.6' --host-ldflags=-L/usr/local/lib --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
    
  libavutil      52. 18.100 / 52. 18.100
    
  libavcodec     54. 92.100 / 54. 92.100
    
  libavformat    54. 63.104 / 54. 63.104
    
  libavdevice    54.  3.103 / 54.  3.103
    
  libavfilter     3. 42.103 /  3. 42.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  2.100 / 52.  2.100
    
[rm @ 0x10180f200] Unsupported stream type 00000265
    
[rm @ 0x10180f200] Unsupported stream type 00000652
    
[rm @ 0x10180f200] max_analyze_duration 5000000 reached at 5004000 microseconds
    
Input #0, rm, from 'input.rm':
    
  Metadata:
    
    File ID         : 41deac0f-94fb-3595-325c-c717943bc532
    
    Content Rating  : (PICS-1.1 "http://www.classify.org/safesurf" labels comment "RealProducer Plus 8.5.0.200 Windows" ratings (SS~~000 1))
    
    Modification Date: 12/13/2007 16:26:16
    
    Generated By    : RealProducer Plus 8.5.0.200 Windows
    
    Keywords        : 
    
    Abstract        : 
    
    Target Audiences: 28K Modem (20 Kbps);56K Modem (34 Kbps);256K DSL/Cable Modem (225 Kbps);
    
    Video Quality   : Normal Motion Video
    
    Audio Format    : Voice Only
    
    Creation Date   : 12/13/2007 14:57:49
    
    ASMRuleBook     : #($Bandwidth < 15000),Stream2Bandwidth = 6500, Stream3Bandwidth = 5499;#($Bandwidth >= 15000) && ($Bandwidth < 20000),Stream2Ba
    
    title           : 
    
    author          : 
    
    copyright       : ?2007
    
    comment         : 
    
  Duration: 01:28:23.42, start: 0.000000, bitrate: 448 kb/s
    
    Stream #0:0: Data: none, 32 kb/s
    
    Stream #0:1: Data: none, 192 kb/s
    
    Stream #0:2: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:3: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:4: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 8 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:5: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:6: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 27 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:7: Audio: cook (cook / 0x6B6F6F63), 22050 Hz, mono, fltp, 32 kb/s
    
    Stream #0:8: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 192 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:9: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 136 kb/s, 30 fps, 30 tbr, 1k tbn, 1k tbc
    
    Stream #0:10: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:11: Audio: sipr (sipr / 0x72706973), 8000 Hz, mono, flt, 6 kb/s
    
    Stream #0:12: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:13: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:14: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 13 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
    Stream #0:15: Video: rv20 (RV20 / 0x30325652), yuv420p, 320x240, 5 kb/s, 15 fps, 15 tbr, 1k tbn, 1k tbc
    
[libx264 @ 0x101889c00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.1 Cache64
    
[libx264 @ 0x101889c00] profile High, level 1.3
    
Output #0, avi, to 'test.avi':
    
  Metadata:
    
    File ID         : 41deac0f-94fb-3595-325c-c717943bc532
    
    Content Rating  : (PICS-1.1 "http://www.classify.org/safesurf" labels comment "RealProducer Plus 8.5.0.200 Windows" ratings (SS~~000 1))
    
    Modification Date: 12/13/2007 16:26:16
    
    Generated By    : RealProducer Plus 8.5.0.200 Windows
    
    Keywords        : 
    
    Abstract        : 
    
    Target Audiences: 28K Modem (20 Kbps);56K Modem (34 Kbps);256K DSL/Cable Modem (225 Kbps);
    
    Video Quality   : Normal Motion Video
    
    Audio Format    : Voice Only
    
    Creation Date   : 12/13/2007 14:57:49
    
    ASMRuleBook     : #($Bandwidth < 15000),Stream2Bandwidth = 6500, Stream3Bandwidth = 5499;#($Bandwidth >= 15000) && ($Bandwidth < 20000),Stream2Ba
    
    INAM            : 
    
    author          : 
    
    ICOP            : ?2007
    
    ICMT            : 
    
    ISFT            : Lavf54.63.104
    
    Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p, 320x240, q=-1--1, 30 tbn, 30 tbc
    
    Stream #0:1: Audio: aac ([255][0][0][0] / 0x00FF), 22050 Hz, mono, s16, 32 kb/s
    
Stream mapping:
    
  Stream #0:8 -> #0:0 (rv20 -> libx264)
    
  Stream #0:7 -> #0:1 (cook -> libfaac)
    
Press [q] to stop, [?] for help
    
[rm @ 0x10180f200] DATA tag in middle of chunk, file may be broken.
    
Truncating packet of size 775215378 to 283607526
    
[rm @ 0x10180f200] Impossibly sized packet
    
Truncating packet of size 686581284 to 279055389
    
[rm @ 0x10180f200] Impossibly sized packet
    
Truncating packet of size 845942319 to 279042877
    
[rm @ 0x10180f200] Impossibly sized packet
    
Truncating packet of size 519635011 to 279040757
    
[rm @ 0x10180f200] Impossibly sized packet
    
Truncating packet of size 302013449 to 260425302
    
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[rm @ 0x10180f200] Impossibly sized packet
    
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[rm @ 0x10180f200] DATA tag in middle of chunk, file may be broken.
    
Truncating packet of size 637535515 to 219973842
    
[rm @ 0x10180f200] Impossibly sized packet
    
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[rm @ 0x10180f200] Impossibly sized packet
    
input.rm: Input/output error
    
frame=    0 fps=0.0 q=0.0 Lsize=      10kB time=00:00:00.00 bitrate=N/A    
    
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead inf%
    
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

  • FFmpeg delay and mix audio streams while keeping overall volume constant

    5 octobre 2020, par unstuck

    I have about 100 audio streams, all with the same intro music/sound, and in some of them the intro is delayed by a few seconds. I want to align and mix all the audio streams such that all the intros play at the same time and the output remains pretty much the same volume throughout. I know in advance how much each stream needs to be delayed by.

    


    Like this in Audacity. Each audio stream is aligned to the intro, and the duration before the intro is arbitrary. (This doesn't solve the volume problem though.)

    


    What I have so far uses adelay and amix. It looks something like this but with more audio streams.

    


    ffmpeg -i 00.oga \
       -i 01.oga \
       -i 02.oga \
       -i 03.oga -filter_complex \
"[0]adelay=delays=     123S:all=1[a0]; \
 [1]adelay=delays=    2718S:all=1[a1]; \
 [2]adelay=delays= 6283185S:all=1[a2]; \
 [3]adelay=delays=11235813S:all=1[a3]; \
 [a0][a1][a2][a3]amix=inputs=4" output.oga


    


    In this example the first stream is delayed by 123 samples, the second by 2 718, the third by 6 283 185, and the by fourth 11 235 813.

    


    This works, except at the beginning of the output it's very quiet. When fed n streams, amix makes each stream 1/nth its original volume, which is a good thing in principle. In this case it's not an entirely good thing, because at the beginning of the output 3 of the 4 audio streams are silent (adelay fills delayed streams with silence), meaning the only audible stream is 1/4 = 25% of its original volume. When the second stream becomes audible, the overall volume is 2/4, with three audible streams 3/4, and with all four streams audible it's 4/4 = 100%.

    


    Instead, I want the the first stream to be at 100% volume when it's the only audible one, 50% volume each when there are two audible streams, etc.

    


    Is there a way to make it so when there are n audio streams but m non-silent audio streams, the volume for each of the audio streams is 1/m not 1/n ? amix does this when streams end ; if one stream ends it changes the volume of the others from 1/n to 1/n-1 over a period of time (dropout_transition : https://ffmpeg.org/ffmpeg-filters.html#amix).

    


    I found a similar question where someone wanted to do something like this but only with 2 audio streams. The answer was to split, trim, and change the volume manually. This would be incredibly complicated with 100 audio streams or more, like in my situation.

    


    Is there any easy way to achieve this, even without FFmpeg ?

    


  • Getting ffmpeg error ‘Ignoring unsupported var reason rtmp :// : I/O error’

    6 septembre 2022, par Lectos Lacious

    Same setting worked normally for months, suddenly start to receive ffmpeg errors about ‘unsupported var’ related to rtmp and streaming stop working. Is this error about unavailable server or bad url ? Can someone enlighten me about meaning of unsupported var ?

    


    NOTE : replaced actual url with ‘someurl’

    


    LOG :
Input #0, rtsp, from 'rtsp ://192.168.40.44:554/1' :
    
Metadata :
    
title : 10
    
Duration : N/A, start : 0.000000, bitrate : N/A
    
Stream #0:0 : Video : h264, yuvj420p(pc, bt709), 1280x720, 15 tbr, 90k tbn, 180k tbc
    
Stream #0:1 : Audio : aac, 48000 Hz, stereo, fltp
    
[rtmp @ 0x7f9fdd58c5e0] Ignoring unsupported var reason
    
rtmp ://someurl : I/O error
    
Exiting normally, received signal 2.
    
Input #0, rtsp, from 'rtsp ://192.168.40.44:554/1' :
    
Metadata :
    
title : 10
    
Duration : N/A, start : 0.000000, bitrate : N/A
    
Stream #0:0 : Video : h264, yuvj420p(pc, bt709), 1280x720, 15 fps, 15 tbr, 90k tbn, 180k tbc
    
Stream #0:1 : Audio : aac, 48000 Hz, stereo, fltp
    
[rtmp @ 0x7f62a5869b20] Ignoring unsupported var reason
    
rtmp ://someurl : I/O error
    
Exiting normally, received signal 2.
    
[rtsp @ 0x7f0b4add32a0] max delay reached. need to consume packet
    
[rtsp @ 0x7f0b4add32a0] RTP : missed 2 packets
    
Input #0, rtsp, from 'rtsp ://192.168.40.44:554/1' :
    
Metadata :
    
title : 10
    
Duration : N/A, start : 0.000000, bitrate : N/A
    
Stream #0:0 : Video : h264, yuvj420p(pc, bt709), 1280x720, 15 fps, 15 tbr, 90k tbn, 180k tbc
    
Stream #0:1 : Audio : aac, 48000 Hz, stereo, fltp
    
[rtmp @ 0x7f0b4af13840] Ignoring unsupported var reason
    
rtmp ://someurl : I/O error
    
Exiting normally, received signal 2.
    
Input #0, rtsp, from 'rtsp ://192.168.40.44:554/1' :
    
Metadata :
    
title : 10
    
Duration : N/A, start : 0.000000, bitrate : N/A
    
Stream #0:0 : Video : h264, yuvj420p(pc, bt709), 1280x720, 15 fps, 15 tbr, 90k tbn, 180k tbc
    
Stream #0:1 : Audio : aac, 48000 Hz, stereo, fltp
    
[rtmp @ 0x7fc61ef8b880] Ignoring unsupported var reason

    


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