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  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

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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.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
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    10 avril 2011

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    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
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Sur d’autres sites (10529)

  • amix filter is causing audio to disappear

    21 novembre 2019, par Mason

    I’m trying overlay audio onto a video. I have a very simple ffmpeg command (auido.mp3 is much longer than the video)

    ffmpeg -i video.mp4 -i audio.mp3 -filter_complex "[0:a] [1:a] amix=duration=shortest [a]" -map 0:v -map [a] test.mp4

    This produces a silent video. However, when not mapping the video stream

    ffmpeg -i video.mp4 -i audio.mp3 -filter_complex "[0:a] [1:a] amix=duration=shortest [a]" -map [a] test.mp4

    The resulting audio file is as expected.

    What could be causing this issues ?

    (Is there a better way to overlay audio onto a video via ffmpeg ?)

    Edit : log

    ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 9.1.1 (GCC) 20190807
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
    
  libavutil      56. 31.100 / 56. 31.100
    
  libavcodec     58. 54.100 / 58. 54.100
    
  libavformat    58. 29.100 / 58. 29.100
    
  libavdevice    58.  8.100 / 58.  8.100
    
  libavfilter     7. 57.100 /  7. 57.100
    
  libswscale      5.  5.100 /  5.  5.100
    
  libswresample   3.  5.100 /  3.  5.100
    
  libpostproc    55.  5.100 / 55.  5.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: mp42mp41
    
    creation_time   : 2019-11-15T05:28:05.000000Z
    
  Duration: 00:00:00.53, start: 0.000000, bitrate: 9463 kb/s
    
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 9546 kb/s, 30 fps, 30 tbr, 30k tbn, 60 tbc (default)
    
    Metadata:
    
      creation_time   : 2019-11-15T05:28:05.000000Z
    
      handler_name    : ?Mainconcept Video Media Handler
    
      encoder         : AVC Coding
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
    
    Metadata:
    
      creation_time   : 2019-11-15T05:28:05.000000Z
    
      handler_name    : #Mainconcept MP4 Sound Media Handler
    
[mp3 @ 000001fdf5f7f040] Estimating duration from bitrate, this may be inaccurate
    
Input #1, mp3, from 'audio.mp3':
    
  Metadata:
    
    date            : 2019-11-14 23:31
    
    id3v2_priv.XMP  : &lt;?xpacket begin="\xef\xbb\xbf" id="W5M0MpCehiHzreSzNTczkc9d"?>\x0a\x0a \x0a  <rdf 256="256" kb="kb"></rdf>s
    
    Stream #1:0: Audio: mp3, 44100 Hz, stereo, fltp, 256 kb/s
    
Stream mapping:
    
  Stream #0:1 (aac) -> amix:input0 (graph 0)
    
  Stream #1:0 (mp3float) -> amix:input1 (graph 0)
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  amix (graph 0) -> Stream #0:1 (aac)
    
Press [q] to stop, [?] for help
    
[libx264 @ 000001fdf64ab700] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 000001fdf64ab700] profile High, level 4.0, 4:2:0, 8-bit
    
[libx264 @ 000001fdf64ab700] 264 - core 158 r2984 3759fcb - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - 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
    
Output #0, mp4, to 'test.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: mp42mp41
    
    encoder         : Lavf58.29.100
    
    Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    
    Metadata:
    
      creation_time   : 2019-11-15T05:28:05.000000Z
    
      handler_name    : ?Mainconcept Video Media Handler
    
      encoder         : Lavc58.54.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      encoder         : Lavc58.54.100 aac
    
frame=   15 fps=0.0 q=-1.0 Lsize=     695kB time=00:00:00.40 bitrate=14232.7kbits/s speed=0.437x    
    
video:693kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.226150%
    
[libx264 @ 000001fdf64ab700] frame I:1     Avg QP:30.52  size:101545
    
[libx264 @ 000001fdf64ab700] frame P:7     Avg QP:28.22  size: 44755
    
[libx264 @ 000001fdf64ab700] frame B:7     Avg QP:30.76  size: 42074
    
[libx264 @ 000001fdf64ab700] consecutive B-frames: 20.0% 40.0% 40.0%  0.0%
    
[libx264 @ 000001fdf64ab700] mb I  I16..4: 68.3% 10.5% 21.2%
    
[libx264 @ 000001fdf64ab700] mb P  I16..4: 17.6%  4.8%  4.3%  P16..4: 28.5%  4.5%  2.8%  0.0%  0.0%    skip:37.6%
    
[libx264 @ 000001fdf64ab700] mb B  I16..4: 17.6%  2.4%  1.3%  B16..8: 37.9%  6.7%  1.3%  direct: 4.9%  skip:27.8%  L0:40.5% L1:54.3% BI: 5.2%
    
[libx264 @ 000001fdf64ab700] 8x8 transform intra:13.9% inter:59.5%
    
[libx264 @ 000001fdf64ab700] coded y,uvDC,uvAC intra: 54.5% 53.3% 42.3% inter: 15.3% 27.8% 21.6%
    
[libx264 @ 000001fdf64ab700] i16 v,h,dc,p:  5% 88%  5%  2%
    
[libx264 @ 000001fdf64ab700] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 53% 29%  1%  1%  1%  2%  1%  2%
    
[libx264 @ 000001fdf64ab700] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu:  6% 80%  9%  1%  1%  0%  1%  0%  2%
    
[libx264 @ 000001fdf64ab700] i8c dc,h,v,p: 16% 80%  3%  1%
    
[libx264 @ 000001fdf64ab700] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 000001fdf64ab700] ref P L0: 40.3%  4.9% 11.0% 43.8%
    
[libx264 @ 000001fdf64ab700] ref B L0: 80.0% 11.1%  8.9%
    
[libx264 @ 000001fdf64ab700] kb/s:11349.57
    
[aac @ 000001fdf64ac600] Qavg: 41522.195

  • avcodec/adpcm_ima_swf : fix frame size to 4096

    6 novembre 2020, par Zane van Iperen
    avcodec/adpcm_ima_swf : fix frame size to 4096

    SWF File Format Specification, Version 19 says this is 1 raw
    
sample + 4095 nibbles.
    

    https://www.adobe.com/content/dam/acom/en/devnet/pdf/swf-file-format-spec.pdf
    

    Signed-off-by : Zane van Iperen <zane@zanevaniperen.com>
    • [DH] libavcodec/adpcmenc.c
    • [DH] tests/ref/acodec/adpcm-swf
    • [DH] tests/ref/acodec/adpcm-swf-trellis
    • [DH] tests/ref/acodec/adpcm-swf-wav
    • [DH] tests/ref/seek/acodec-adpcm-swf
    • [DH] tests/ref/seek/acodec-adpcm-swf-trellis

  • Getting a lot of Tail Silence when combining an image and audio into mp4 movie

    1er avril 2023, par Meryan

    As it can be seen from this snapshot the audio HELLO.mp3 combined with bitmap HELLO.jpg produced a movie HELLO_aac.mp4 that has a huge amount of tail silence

    &#xA;

    enter image description here

    &#xA;

    The command line I was helped to put together is the following

    &#xA;

    ======================== &#xA;IN_FILES=-i ".\HELLO.JPG" -i ".\HELLO.MP3"    &#xA;OUT_FILE=".\HELLO_aac.MP4"   &#xA;EXE="S:\_BINS\FFmpeg 4.2.1 20200112\bin\ffmpeg.exe"  &#xA;OPTIONS= -loop 1   -i ".\HELLO.JPG" -i ".\HELLO.MP3"    -vf "scale=-1:1080,pad=1920:1080:(1920-iw)/2:(1080-ih)/2,setsar=1"  -c:v libx264 -profile:v main -pix_fmt yuv420p -r 24 -video_track_timescale 24000    -c:a aac    -shortest -y ".\HELLO_aac.MP4"     &#xA;======================== &#xA;&#xA;

    &#xA;

    Here is the captured output from FFmpeg

    &#xA;

    ffmpeg version git-2020-01-10-3d894db Copyright (c) 2000-2020 the FFmpeg developers&#xA;  built with gcc 9.2.1 (GCC) 20191125&#xA;  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf&#xA;  libavutil      56. 38.100 / 56. 38.100&#xA;  libavcodec     58. 65.103 / 58. 65.103&#xA;  libavformat    58. 35.101 / 58. 35.101&#xA;  libavdevice    58.  9.103 / 58.  9.103&#xA;  libavfilter     7. 70.101 /  7. 70.101&#xA;  libswscale      5.  6.100 /  5.  6.100&#xA;  libswresample   3.  6.100 /  3.  6.100&#xA;  libpostproc    55.  6.100 / 55.  6.100&#xA;Input #0, image2, from &#x27;.\HELLO.JPG&#x27;:&#xA;  Duration: 00:00:00.04, start: 0.000000, bitrate: 23923 kb/s&#xA;    Stream #0:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 1600x1200 [SAR 120:120 DAR 4:3], 25 fps, 25 tbr, 25 tbn, 25 tbc&#xA;[mp3 @ 000002019015d4c0] Estimating duration from bitrate, this may be inaccurate&#xA;Input #1, mp3, from &#x27;.\HELLO.MP3&#x27;:&#xA;  Metadata:&#xA;    genre           : Blues&#xA;    id3v2_priv.XMP  : &lt;?xpacket begin="\xef\xbb\xbf" id="W5M0MpCehiHzreSzNTczkc9d"?>\x0a\x0a \x0a  s&#xA;    Stream #1:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s&#xA;Stream mapping:&#xA;  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))&#xA;  Stream #1:0 -> #0:1 (mp3 (mp3float) -> aac (native))&#xA;Press [q] to stop, [?] for help&#xA;[swscaler @ 0000020190b10380] deprecated pixel format used, make sure you did set range correctly&#xA;[swscaler @ 0000020190b10380] Warning: data is not aligned! This can lead to a speed loss&#xA;[libx264 @ 0000020190759300] using SAR=1/1&#xA;[libx264 @ 0000020190759300] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2&#xA;[libx264 @ 0000020190759300] profile Main, level 4.0, 4:2:0, 8-bit&#xA;[libx264 @ 0000020190759300] 264 - core 158 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 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=34 lookahead_threads=5 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=24 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;.\HELLO_aac.MP4&#x27;:&#xA;  Metadata:&#xA;    encoder         : Lavf58.35.101&#xA;    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 24 fps, 24k tbn, 24 tbc&#xA;    Metadata:&#xA;      encoder         : Lavc58.65.103 libx264&#xA;    Side data:&#xA;      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A&#xA;    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 69 kb/s&#xA;    Metadata:&#xA;      encoder         : Lavc58.65.103 aac&#xA;frame=   69 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 drop=1 speed=   0x    &#xA;frame=   97 fps=0.0 q=-1.0 Lsize=     128kB time=00:00:03.91 bitrate= 267.1kbits/s dup=0 drop=2 speed=5.04x    &#xA;video:119kB audio:6kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.208101%&#xA;[libx264 @ 0000020190759300] frame I:1     Avg QP:12.88  size:103994&#xA;[libx264 @ 0000020190759300] frame P:24    Avg QP:14.05  size:   224&#xA;[libx264 @ 0000020190759300] frame B:72    Avg QP:12.67  size:   160&#xA;[libx264 @ 0000020190759300] consecutive B-frames:  1.0%  0.0%  0.0% 99.0%&#xA;[libx264 @ 0000020190759300] mb I  I16..4: 61.7%  0.0% 38.3%&#xA;[libx264 @ 0000020190759300] mb P  I16..4:  0.1%  0.0%  0.0%  P16..4:  0.5%  0.1%  0.0%  0.0%  0.0%    skip:99.3%&#xA;[libx264 @ 0000020190759300] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  1.6%  0.0%  0.0%  direct: 0.0%  skip:98.4%  L0:81.1% L1:18.9% BI: 0.0%&#xA;[libx264 @ 0000020190759300] coded y,uvDC,uvAC intra: 34.5% 17.3% 15.6% inter: 0.0% 0.1% 0.0%&#xA;[libx264 @ 0000020190759300] i16 v,h,dc,p: 70% 19%  7%  3%&#xA;[libx264 @ 0000020190759300] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 40% 22% 12%  4%  5%  5%  3%  5%  4%&#xA;[libx264 @ 0000020190759300] i8c dc,h,v,p: 80%  8% 10%  2%&#xA;[libx264 @ 0000020190759300] Weighted P-Frames: Y:0.0% UV:0.0%&#xA;[libx264 @ 0000020190759300] ref P L0: 97.6%  0.3%  1.5%  0.6%&#xA;[libx264 @ 0000020190759300] ref B L0:  1.8% 98.2%&#xA;[libx264 @ 0000020190759300] ref B L1: 99.9%  0.1%&#xA;[libx264 @ 0000020190759300] kb/s:239.28&#xA;[aac @ 000002019075bf40] Qavg: 8004.814&#xA;======================== &#xA;

    &#xA;

    I have also tried the following command line

    &#xA;

    "S:\_BINS\ffmpeg-2023-03-20\bin\ffmpeg.exe" -loop 1 -i "HELLO.JPG" -i "HELLO.MP3" -c:v libx264 -tune stillimage -c:a aac -b:a 192k -pix_fmt yuv420p -y -shortest "HELLO_aac.mp4"    &#xA;

    &#xA;

    With similar long dead tail silence ???

    &#xA;

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