Recherche avancée

Médias (1)

Mot : - Tags -/école

Autres articles (49)

  • Les vidéos

    21 avril 2011, par

    Comme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
    Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
    Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...)

  • Keeping control of your media in your hands

    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.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

Sur d’autres sites (3944)

  • webm to mp4 conversion using ffmpeg

    2 décembre 2015, par Pavan K

    When I try to convert a webm file to mp4 the output is very very choppy and it appears as if many frames have been dropped by ffmpeg

    I used the following commands to convert

    ffmpeg -i movie.webm movie.mp4
    
ffmpeg -i movie.webm -vcodec libx264 movie.mp4
    
ffmpeg -i movie.webm -vcodec libx264 -qscale 0 movie.mp4

    All of them have the same problem. When I use ffprobe it seems to show the frames more or less properly.

    UPDATE :

     built on Jun 14 2013 14:31:50 with gcc 4.7 (Ubuntu/Linaro 4.7.2-2ubuntu1)
    
  configuration: --prefix=/home/user2/ffmpeg_build --extra-cflags=-I/home/user2/ffmpeg_build/include --extra-ldflags=-L/home/pavan4/ffmpeg_build/lib --bindir=/home/pavan4/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab
    
  libavutil      52. 35.101 / 52. 35.101
    
  libavcodec     55. 16.100 / 55. 16.100
    
  libavformat    55.  8.102 / 55.  8.102
    
  libavdevice    55.  2.100 / 55.  2.100
    
  libavfilter     3. 77.101 /  3. 77.101
    
  libswscale      2.  3.100 /  2.  3.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  3.100 / 52.  3.100
    
Hyper fast Audio and Video encoder
    
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
    

    
Use -h to get full help or, even better, run 'man ffmpeg'
    

    
Input #0, matroska,webm, from '1.webm':
    
  Duration: 00:00:10.64, start: 0.000000, bitrate: 5024 kb/s
    
    Stream #0:0(eng): Video: vp8, yuv420p, 1280x720, SAR 1:1 DAR 16:9, 1k fps, 1k tbr, 1k tbn, 1k tbc (default)
    
[libx264 @ 0x1d966a0] using SAR=1/1
    
[libx264 @ 0x1d966a0] MB rate (3600000) > level limit (2073600)
    
[libx264 @ 0x1d966a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    
[libx264 @ 0x1d966a0] profile High, level 5.2
    
[libx264 @ 0x1d966a0] 264 - core 133 r2 a3ac64b - 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=12 lookahead_threads=2 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 '1_conv4.mp4':
    
  Metadata:
    
    encoder         : Lavf55.8.102
    
    Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 16k tbn, 1k tbc (default)
    
Stream mapping:
    
Stream #0:0 -> #0:0 (vp8 -> libx264)
    
Press [q] to stop, [?] for help
    
frame=  168 fps=0.0 q=33.0 size=      62kB time=00:00:00.11 bitrate=4606.0kbits/frame=  293 fps=230 q=33.0 size=     138kB time=00:00:00.23 bitrate=4809.7kbits/
    

    
video:5620kB audio:0kB subtitle:0 global headers:0kB muxing overhead 2.212461%
    
[libx264 @ 0x1d966a0] frame I:46    Avg QP:18.50  size: 39849
    
[libx264 @ 0x1d966a0] frame P:2940  Avg QP:18.27  size:  1222
    
[libx264 @ 0x1d966a0] frame B:7651  Avg QP:17.68  size:    43
    
[libx264 @ 0x1d966a0] consecutive B-frames:  4.0%  0.2%  0.3% 95.5%
    
[libx264 @ 0x1d966a0] mb I  I16..4: 19.9% 63.2% 16.9%
    
[libx264 @ 0x1d966a0] mb P  I16..4:  0.2%  0.5%  0.1%  P16..4:  3.9%  1.1%  0.6%  0.0%  0.0%    skip:93.6%
    
[libx264 @ 0x1d966a0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:25.1% L1:74.9% BI: 0.0%
    
[libx264 @ 0x1d966a0] 8x8 transform intra:63.6% inter:75.9%
    
[libx264 @ 0x1d966a0] coded y,uvDC,uvAC intra: 61.5% 53.4% 24.4% inter: 0.5% 0.5% 0.0%
    
[libx264 @ 0x1d966a0] i16 v,h,dc,p: 52% 19% 19% 11%
    
[libx264 @ 0x1d966a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 17% 13%  4%  6%  9%  5%  8%  6%
    
[libx264 @ 0x1d966a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 18% 14%  5%  8% 10%  6%  6%  3%
    
[libx264 @ 0x1d966a0] i8c dc,h,v,p: 55% 17% 24%  4%
    
[libx264 @ 0x1d966a0] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x1d966a0] ref P L0: 82.5% 13.2%  4.0%  0.3%
    
[libx264 @ 0x1d966a0] ref B L0: 60.2% 39.2%  0.6%
    
[libx264 @ 0x1d966a0] ref B L1: 98.5%  1.5%
    
[libx264 @ 0x1d966a0] kb/s:4327.77

  • webm to mp4 conversion using ffmpeg

    2 décembre 2015, par Pavan K

    When I try to convert a webm file to mp4 the output is very very choppy and it appears as if many frames have been dropped by ffmpeg

    I used the following commands to convert

    ffmpeg -i movie.webm movie.mp4
    
ffmpeg -i movie.webm -vcodec libx264 movie.mp4
    
ffmpeg -i movie.webm -vcodec libx264 -qscale 0 movie.mp4

    All of them have the same problem. When I use ffprobe it seems to show the frames more or less properly.

    UPDATE :

     built on Jun 14 2013 14:31:50 with gcc 4.7 (Ubuntu/Linaro 4.7.2-2ubuntu1)
    
  configuration: --prefix=/home/user2/ffmpeg_build --extra-cflags=-I/home/user2/ffmpeg_build/include --extra-ldflags=-L/home/pavan4/ffmpeg_build/lib --bindir=/home/pavan4/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab
    
  libavutil      52. 35.101 / 52. 35.101
    
  libavcodec     55. 16.100 / 55. 16.100
    
  libavformat    55.  8.102 / 55.  8.102
    
  libavdevice    55.  2.100 / 55.  2.100
    
  libavfilter     3. 77.101 /  3. 77.101
    
  libswscale      2.  3.100 /  2.  3.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  3.100 / 52.  3.100
    
Hyper fast Audio and Video encoder
    
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
    

    
Use -h to get full help or, even better, run 'man ffmpeg'
    

    
Input #0, matroska,webm, from '1.webm':
    
  Duration: 00:00:10.64, start: 0.000000, bitrate: 5024 kb/s
    
    Stream #0:0(eng): Video: vp8, yuv420p, 1280x720, SAR 1:1 DAR 16:9, 1k fps, 1k tbr, 1k tbn, 1k tbc (default)
    
[libx264 @ 0x1d966a0] using SAR=1/1
    
[libx264 @ 0x1d966a0] MB rate (3600000) > level limit (2073600)
    
[libx264 @ 0x1d966a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    
[libx264 @ 0x1d966a0] profile High, level 5.2
    
[libx264 @ 0x1d966a0] 264 - core 133 r2 a3ac64b - 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=12 lookahead_threads=2 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 '1_conv4.mp4':
    
  Metadata:
    
    encoder         : Lavf55.8.102
    
    Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 16k tbn, 1k tbc (default)
    
Stream mapping:
    
Stream #0:0 -> #0:0 (vp8 -> libx264)
    
Press [q] to stop, [?] for help
    
frame=  168 fps=0.0 q=33.0 size=      62kB time=00:00:00.11 bitrate=4606.0kbits/frame=  293 fps=230 q=33.0 size=     138kB time=00:00:00.23 bitrate=4809.7kbits/
    

    
video:5620kB audio:0kB subtitle:0 global headers:0kB muxing overhead 2.212461%
    
[libx264 @ 0x1d966a0] frame I:46    Avg QP:18.50  size: 39849
    
[libx264 @ 0x1d966a0] frame P:2940  Avg QP:18.27  size:  1222
    
[libx264 @ 0x1d966a0] frame B:7651  Avg QP:17.68  size:    43
    
[libx264 @ 0x1d966a0] consecutive B-frames:  4.0%  0.2%  0.3% 95.5%
    
[libx264 @ 0x1d966a0] mb I  I16..4: 19.9% 63.2% 16.9%
    
[libx264 @ 0x1d966a0] mb P  I16..4:  0.2%  0.5%  0.1%  P16..4:  3.9%  1.1%  0.6%  0.0%  0.0%    skip:93.6%
    
[libx264 @ 0x1d966a0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:25.1% L1:74.9% BI: 0.0%
    
[libx264 @ 0x1d966a0] 8x8 transform intra:63.6% inter:75.9%
    
[libx264 @ 0x1d966a0] coded y,uvDC,uvAC intra: 61.5% 53.4% 24.4% inter: 0.5% 0.5% 0.0%
    
[libx264 @ 0x1d966a0] i16 v,h,dc,p: 52% 19% 19% 11%
    
[libx264 @ 0x1d966a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 17% 13%  4%  6%  9%  5%  8%  6%
    
[libx264 @ 0x1d966a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 18% 14%  5%  8% 10%  6%  6%  3%
    
[libx264 @ 0x1d966a0] i8c dc,h,v,p: 55% 17% 24%  4%
    
[libx264 @ 0x1d966a0] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x1d966a0] ref P L0: 82.5% 13.2%  4.0%  0.3%
    
[libx264 @ 0x1d966a0] ref B L0: 60.2% 39.2%  0.6%
    
[libx264 @ 0x1d966a0] ref B L1: 98.5%  1.5%
    
[libx264 @ 0x1d966a0] kb/s:4327.77

  • FFMPEG image + music = video

    24 septembre 2017, par Nikita Slastikhin

    Just trying todo video for youtube from image (1080p .png) + music (320Kb mp3).

        ffmpeg -loop 1 -i image.png -i music.mp3 -c:a copy -c:v libx264 -crf 0 -preset veryslow -shortest output.mp4

    But converting is to slowly.
    Any ideas, how it make optimize ?

    E:_TEST>ffmpeg -loop 1 -i image0.png -i music0.mp3 -c:a aac -c:v libx264 -crf 0 -preset veryfast -shortest video0.mp4
       ffmpeg version N-87306-g6743351 Copyright (c) 2000-2017 the FFmpeg developers
       built with gcc 7.2.0 (GCC)
       configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib
       libavutil            55. 75.100 / 55. 75.100
       libavcodec         57.106.101 / 57.106.101
       libavformat        57. 82.100 / 57. 82.100
       libavdevice        57.    8.101 / 57.    8.101
       libavfilter         6.105.100 /    6.105.100
       libswscale            4.    7.103 /    4.    7.103
       libswresample     2.    8.100 /    2.    8.100
       libpostproc        54.    6.100 / 54.    6.100
       Input #0, png_pipe, from 'image0.png':
       Duration: N/A, bitrate: N/A
           Stream #0:0: Video: png, rgb24(pc), 1920x1080, 25 fps, 25 tbr, 25 tbn, 25 tbc
       Input #1, mp3, from 'music0.mp3':
       Metadata:
           encoder                 : Lavf57.56.101
       Duration: 01:00:33.06, start: 0.025057, bitrate: 128 kb/s
           Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
           Metadata:
               encoder                 : Lavc57.64
       Stream mapping:
       Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
       Stream #1:0 -> #0:1 (mp3 (native) -> aac (native))
       Press [q] to stop, [?] for help
       [libx264 @ 0000000002d3f320] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX XOP FMA3 BMI1
       [libx264 @ 0000000002d3f320] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
       [libx264 @ 0000000002d3f320] 264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - <a href="http://www.videolan.org/x264.html" rel="nofollow noreferrer">http://www.videolan.org/x264.html</a> - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=2 psy=0 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=12 lookahead_threads=4 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=0
       Output #0, mp4, to 'video0.mp4':
       Metadata:
           encoder                 : Lavf57.82.100
           Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p(progressive), 1920x1080, q=-1--1, 25 fps, 12800 tbn, 25 tbc
           Metadata:
               encoder                 : Lavc57.106.101 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), 44100 Hz, stereo, fltp, 128 kb/s
           Metadata:
               encoder                 : Lavc57.106.101 aac
       frame=    107 fps= 40 q=-1.0 Lsize=         778kB time=00:00:04.24 bitrate=1503.5kbits/s speed=1.57x

Navigation