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    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
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    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Mise à jour de la version 0.1 vers 0.2

    24 juin 2013, par

    Explications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
    Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...)

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Sur d’autres sites (10915)

  • FFMPEG Detect volume of streaming (PHP)

    22 septembre 2013, par Mohamed Mostafa

    I spent last 4 days trying to acheive that but with no luck,

    I am trying to detect volume of streaming link or save audio file, using the FFmpeg I tried every single command line.

    ffmpeg -f lavfi -i amovie=sample1.aac,volumedetect -f null -y test.txt

    Output

    There was a problem! Array (
    
    [0] => FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers
    
    [1] => built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6)
    
    [2] => configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable-libdc1394 --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab
    
    [3] => libavutil 50.15. 1 / 50.15. 1
    
    [4] => libavcodec 52.72. 2 / 52.72. 2
    
    [5] => libavformat 52.64. 2 / 52.64. 2
    
    [6] => libavdevice 52. 2. 0 / 52. 2. 0
    
    [7] => libavfilter 1.19. 0 / 1.19. 0
    
    [8] => libswscale 0.11. 0 / 0.11. 0
    
    [9] => libpostproc 51. 2. 0 / 51. 2. 0
    
    [10] => Unknown input format: 'lavf'
    
)

    Basically my problem now is :

     Unknown input format: 'lavf'

    Any help please

    My FFMpeg Version is

    [root@bea ~]# ffmpeg -formats | grep lavfi

    FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers
    built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6)
    configuration : —prefix=/usr —libdir=/usr/lib64 —shlibdir=/usr/lib64 —mandir=/usr/share/man —incdir=/usr/include —disable-avisynth —extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector —param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' —enable-avfilter —enable-avfilter-lavf —enable-libdc1394 —enable-libdirac —enable-libfaac —enable-libfaad —enable-libfaadbin —enable-libgsm —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-librtmp —enable-libschroedinger —enable-libspeex —enable-libtheora —enable-libx264 —enable-gpl —enable-nonfree —enable-postproc —enable-pthreads —enable-shared —enable-swscale —enable-vdpau —enable-version3 —enable-x11grab
    libavutil 50.15. 1 / 50.15. 1
    libavcodec 52.72. 2 / 52.72. 2
    libavformat 52.64. 2 / 52.64. 2
    libavdevice 52. 2. 0 / 52. 2. 0
    libavfilter 1.19. 0 / 1.19. 0
    libswscale 0.11. 0 / 0.11. 0
    libpostproc 51. 2. 0 / 51. 2. 0

    From PHP info

    ffmpeg

    ffmpeg-php version 0.6.0-svn
    ffmpeg-php built on Sep 21 2013 15:38:20
    ffmpeg-php gd support enabled
    ffmpeg libavcodec version Lavc52.72.2
    ffmpeg libavformat version Lavf52.64.2
    ffmpeg swscaler version SwS0.11.0

    Directive Local Value Master Value
    ffmpeg.allow_persistent 0 0
    ffmpeg.show_warnings 0 0

  • KLV data in RTP stream

    18 septembre 2013, par Ardoramor

    I have implemented RFC6597 to stream KLV is RTP SMPTE336M packets. Currently, my SDP looks like this :

    v=2
    
o=- 0 0 IN IP4 127.0.0.1
    
s=Unnamed
    
i=N/A
    
c=IN IP4 192.168.1.6
    
t=0 0
    
a=recvonly
    
m=video 8202 RTP/AVP 96
    
a=rtpmap:96 H264/90000
    
a=fmtp:96 packetization-mode=1;profile-level-id=428028;sprop-parameter-sets=Z0KAKJWgKA9E,aM48gA==;
    
a=control:trackID=0
    
m=application 8206 RTP/AVP 97
    
a=rtpmap:97 smpte336m/1000
    
a=control:trackID=1

    I try to remux the RTP stream with FFmpeg like so :

    ffmpeg.exe -i test.sdp -map 0:0 -map 0:1 -c:v copy -c:d copy test.m2ts

    I get the following output with FFmpeg :

    ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Mar 28 2013 00:34:08 with gcc 4.8.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
    
  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
    
[aac @ 0000000002137900] Sample rate index in program config element does not match the sample rate index configured by the container.
    
    Last message repeated 1 times
    
[aac @ 0000000002137900] decode_pce: Input buffer exhausted before END element found
    
[h264 @ 00000000002ce540] Missing reference picture, default is 0
    
[h264 @ 00000000002ce540] decode_slice_header error
    
[sdp @ 00000000002cfa80] Estimating duration from bitrate, this may be inaccurate
    
Input #0, sdp, from 'C:\Users\dragan\Documents\Workspace\Android\uvlens\tests\test.sdp':
    
  Metadata:
    
    title           : Unnamed
    
    comment         : N/A
    
  Duration: N/A, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Audio: aac, 32000 Hz, 58 channels, fltp
    
    Stream #0:1: Video: h264 (Baseline), yuv420p, 640x480, 14.83 tbr, 90k tbn, 180k tbc
    
    Stream #0:2: Data: none
    
File 'C:\Users\dragan\Documents\Workspace\Android\uvlens\tests\test.m2ts' already exists. Overwrite ? [y/N] y
    
Output #0, mpegts, to 'C:\Users\dragan\Documents\Workspace\Android\uvlens\tests\test.m2ts':
    
  Metadata:
    
    title           : Unnamed
    
    comment         : N/A
    
    encoder         : Lavf54.63.104
    
    Stream #0:0: Video: h264, yuv420p, 640x480, q=2-31, 90k tbn, 90k tbc
    
    Stream #0:1: Data: none
    
Stream mapping:
    
  Stream #0:1 -> #0:0 (copy)
    
  Stream #0:2 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
[mpegts @ 0000000002159940] Application provided invalid, non monotonically increasing dts to muxer in stream 1: 8583659665 >= 8583656110
    
av_interleaved_write_frame(): Invalid argument

    The problem is that KLV stream packets do not contain have a DTS field. According to the RFC6597 STMPE336M, RTP packet structure is the same as a standard structure :

    4.1.  RTP Header Usage
    

    
This payload format uses the RTP packet header fields as described in
    
the table below:
    

    
+-----------+-------------------------------------------------------+
    
| Field     | Usage                                                 |
    
+-----------+-------------------------------------------------------+
    
| Timestamp | The RTP Timestamp encodes the instant along a         |
    
|           | presentation timeline that the entire KLVunit encoded |
    
|           | in the packet payload is to be presented.  When one   |
    
|           | KLVunit is placed in multiple RTP packets, the RTP    |
    
|           | timestamp of all packets comprising that KLVunit MUST |
    
|           | be the same.  The timestamp clock frequency is        |
    
|           | defined as a parameter to the payload format          |
    
|           | (Section 6).                                          |
    
|           |                                                       |
    
| M-bit     | The RTP header marker bit (M) is used to demarcate    |
    
|           | KLVunits.  Senders MUST set the marker bit to '1' for |
    
|           | any RTP packet that contains the final byte of a      |
    
|           | KLVunit.  For all other packets, senders MUST set the |
    
|           | RTP header marker bit to '0'.  This allows receivers  |
    
|           | to pass a KLVunit for parsing/decoding immediately    |
    
|           | upon receipt of the last RTP packet comprising the    |
    
|           | KLVunit.  Without this, a receiver would need to wait |
    
|           | for the next RTP packet with a different timestamp to |
    
|           | arrive, thus signaling the end of one KLVunit and the |
    
|           | start of another.                                     |
    
+-----------+-------------------------------------------------------+
    

    
The remaining RTP header fields are used as specified in [RFC3550].

    Header from RFC3550 :

    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    
|V=2|P|X|  CC   |M|     PT      |       sequence number         |
    
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    
|                           timestamp                           |
    
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    
|           synchronization source (SSRC) identifier            |
    
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
    
|            contributing source (CSRC) identifiers             |
    
|                             ....                              |
    
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

    RFC's note about placement of KLV data into RTP packet :

    KLVunits small enough to fit into a single RTP
    packet (RTP packet size is up to the implementation but should
    consider underlying transport/network factors such as MTU
    limitations) are placed directly into the payload of the RTP packet,
    with the first byte of the KLVunit (which is the first byte of a KLV
    Universal Label Key) being the first byte of the RTP packet payload.

    My question is where does FFmpeg keep looking for the DTS ?

    Does it interpret the Timestamp field of the RTP packet header as DTS ? If so, I've verified that the timestamps increase (although at different rates) but are not equal to what FFmpeg prints out :

    8583659665 >= 8583656110

  • ffmpeg options for playing in iPad WebView with tag

    19 septembre 2013, par Waynn Lue

    I'm trying to convert a video to be played in a tag in a WebView in iOS. I've tried the options at this link but it still doesn't seem to play. I've found videos that do successfully play, though, so I'm sure it's possible, I just can't seem to get any working. Here's the ffmpeg -i output for something that works.

    Here's what I tried from the wiki :

    ffmpeg -i {filename} -acodec aac -ac 2 -strict experimental -ab 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b 1200k -f mp4 -threads 0 {filename}.ipad.mp4

    But the file doesn't play in the WebView.

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.m4v' :
  Metadata :
    major_brand : M4V 
    minor_version : 1
    compatible_brands : M4V M4A mp42isom
    creation_time : 2005-12-20 20:20:15
  Duration : 00:01:25.50, start : 0.000000, bitrate : 209 kb/s
    Stream #0:0(eng) : Audio : aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 115 kb/s
    Metadata :
      creation_time : 2005-12-20 20:20:15
      handler_name : Apple Sound Media Handler
    Stream #0:1(eng) : Video : h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 320x240, 90 kb/s, 10 fps, 10 tbr, 1k tbn, 2k tbc
    Metadata :
      creation_time : 2005-12-20 20:20:15
      handler_name : Apple Video Media Handler

    And here's the output for my input file :

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cheerfulness.mov' :
  Metadata :
    major_brand : qt  
    minor_version : 537199360
    compatible_brands : qt  
    creation_time : 2013-07-31 00:47:22
  Duration : 00:00:06.00, start : 0.000000, bitrate : 120849 kb/s
    Stream #0:0(eng) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 1200x1920, 120823 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 60k tbc
    Metadata :
      creation_time : 2013-07-31 00:48:33
      handler_name : Apple Alias Data Handler

    edit : Here's the full output of the command :

    wlue :$ ffmpeg -i cheerfulness.mov -acodec aac -ac 2 -strict experimental -ab 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b 1200k -f mp4 -threads 0 output.ipad.mp4
ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
  built on Sep 18 2013 18:44:15 with Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)
  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=cc —host-cflags= —host-ldflags= —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
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cheerfulness.mov' :
  Metadata :
    major_brand : qt  
    minor_version : 537199360
    compatible_brands : qt  
    creation_time : 2013-07-31 00:47:22
  Duration : 00:00:06.01, start : 0.000000, bitrate : 120849 kb/s
    Stream #0:0(eng) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 1200x1920, 120823 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 60k tbc
    Metadata :
      creation_time : 2013-07-31 00:48:33
      handler_name : Apple Alias Data Handler
Please use -b:a or -b:v, -b is ambiguous
[libx264 @ 0x7fa67401fa00] frame MB size (75x120) > level limit (1620)
[libx264 @ 0x7fa67401fa00] DPB size (5 frames, 17280000 bytes) > level limit (0 frames, 3110400 bytes)
[libx264 @ 0x7fa67401fa00] MB rate (269730) > level limit (40500)
[libx264 @ 0x7fa67401fa00] using cpu capabilities : MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x7fa67401fa00] profile Constrained Baseline, level 3.0
[libx264 @ 0x7fa67401fa00] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options : cabac=0 ref=5 deblock=1:0:0 analyse=0x1:0x111 me=umh subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=1200 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=10000 vbv_bufsize=10000 nal_hrd=none ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'output.ipad.mp4' :
  Metadata :
    major_brand : qt  
    minor_version : 537199360
    compatible_brands : qt  
    encoder : Lavf54.63.104
    Stream #0:0(eng) : Video : h264 ([33][0][0][0] / 0x0021), yuv420p, 1200x1920, q=-1—1, 1200 kb/s, 30k tbn, 29.97 tbc
    Metadata :
      creation_time : 2013-07-31 00:48:33
      handler_name : Apple Alias Data Handler
Stream mapping :
  Stream #0:0 -> #0:0 (h264 -> libx264)
Press [q] to stop, [?] for help
frame=  180 fps= 16 q=-1.0 Lsize=     828kB time=00:00:06.00 bitrate=1129.2kbits/s    
video:826kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.177851%
[libx264 @ 0x7fa67401fa00] frame I:2     Avg QP:32.23  size : 20942
[libx264 @ 0x7fa67401fa00] frame P:178   Avg QP:41.03  size :  4515
[libx264 @ 0x7fa67401fa00] mb I  I16..4 : 90.1%  0.0%  9.9%
[libx264 @ 0x7fa67401fa00] mb P  I16..4 :  6.8%  0.0%  0.0%  P16..4 : 16.8%  0.6%  0.2%  0.0%  0.0%    skip:75.5%
[libx264 @ 0x7fa67401fa00] final ratefactor : 37.56
[libx264 @ 0x7fa67401fa00] coded y,uvDC,uvAC intra : 1.2% 16.4% 2.1% inter : 0.1% 3.4% 0.1%
[libx264 @ 0x7fa67401fa00] i16 v,h,dc,p : 49% 23%  4% 24%
[libx264 @ 0x7fa67401fa00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu : 13%  8% 36%  8% 12%  9%  8%  4%  2%
[libx264 @ 0x7fa67401fa00] i8c dc,h,v,p : 88%  6%  5%  1%
[libx264 @ 0x7fa67401fa00] ref P L0 : 47.7% 22.0% 16.7%  5.7%  7.9%
[libx264 @ 0x7fa67401fa00] kb/s:1126.21

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