Recherche avancée

Médias (91)

Autres articles (28)

  • 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.

  • 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.

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

Sur d’autres sites (6325)

  • Is there a way to tell ffmpeg to speed up a video so its duration matches the duration of the audio ?

    7 février 2020, par Qix - MONICA WAS MISTREATED

    Just as the title describes ; is there a simple way to tell ffmpeg to take in video and audio tracks and to speed up (or slow down, I suppose) the video so that it matches the duration of the audio ? I can calculate PTS values but have no idea how to do it in an automated way.

  • How to speed up creating video mosaic with ffmpeg

    7 janvier 2020, par DALER RAHIMOV

    I’m looking to speed up ffmpeg pipeline in some way (camera configuration, different filters or any other ideas would be appreciated).

    I have a device that captures videos streams and later creates mosaic video view from 4 cameras. The main issue I’m having is that it’s taking too long to create mosaic video. There is no GPU on the device that could be used to accelerate the process so I’m left with camera configurations (Hikvision).

    Here is what I have so far

    About 160 sec on Intel J-1900 :

    - 5 min video files,
    - 640*480 resolution,
    - h264 encoding,
    - 10 fps,
    - 1024 max bitrate,
    - 10 I-frame interval,      

    Command that I’m using :

    ffmpeg -y -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 \
      -filter_complex " \
         color=c=black:size=1280x720 [base]; \
         [0:v] setpts=PTS-STARTPTS, scale=640x360 [cam0]; \
         [1:v] setpts=PTS-STARTPTS, scale=640x360 [cam1]; \
         [2:v] setpts=PTS-STARTPTS, scale=640x360 [cam2]; \
         [3:v] setpts=PTS-STARTPTS, scale=640x360 [cam3]; \
         [base][cam0] overlay=shortest=1:x=0:y=0  [z1]; \
         [z1][cam1] overlay=shortest=1:x=640:y=0  [z2]; \
         [z2][cam2] overlay=shortest=1:x=0:y=360  [z3]; \
         [z3][cam3] overlay=shortest=1:x=640:y=360 \
       " \
       -an -c:v libx264  -x264-params keyint=10 \
       -movflags faststart -preset fast -nostats -loglevel quiet -r 10.000000 mosaic.mp4

    Thanks

    Here is full output as requested

    ffmpeg -y -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 \
    >    -filter_complex " \
    >       color=c=black:size=1280x720 [base]; \
    >       [0:v] setpts=PTS-STARTPTS, scale=640x360 [cam0]; \
    >       [1:v] setpts=PTS-STARTPTS, scale=640x360 [cam1]; \
    >       [2:v] setpts=PTS-STARTPTS, scale=640x360 [cam2]; \
    >       [3:v] setpts=PTS-STARTPTS, scale=640x360 [cam3]; \
    >       [base][cam0] overlay=shortest=1:x=0:y=0  [z1]; \
    >       [z1][cam1] overlay=shortest=1:x=640:y=0  [z2]; \
    >       [z2][cam2] overlay=shortest=1:x=0:y=360  [z3]; \
    >       [z3][cam3] overlay=shortest=1:x=640:y=360 \
    >     " \
    >     -an -c:v libx264  -x264-params keyint=10 \
    >     -movflags faststart -preset fast -nostats -r 10.000000 mosaic.mp4
    ffmpeg version 2.8.15-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg developers
     built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
     configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg -y -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4 -i 1578324600-1-stitched.mp4    -filter_complex " \
         color=c=black:size=1280x720 [base]; \
         [0:v] setpts=PTS-STARTPTS, scale=640x360 [cam0]; \
         [1:v] setpts=PTS-STARTPTS, scale=640x360 [cam1]; \
         [2:v] setpts=PTS-STARTPTS, scale=640x360 [cam2]; \
         [3:v] setpts=PTS-STARTPTS, scale=640x360 [cam3]; \
         [base][cam0] overlay=shortest=1:x=0:y=0  [z1]; \
         [z1][cam1] overlay=shortest=1:x=640:y=0  [z2]; \
         [z2][cam2] overlay=shortest=1:x=0:y=360  [z3]; \
         [z3][cam3] overlay=shortest=1:x=640:y=360 \
       "     -an -c:v libx264  -x264-params keyint=10     -movflags faststart -preset fast -r 10.000000 mosaic.mp4
    ffmpeg version 2.8.15-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg developers
     built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
     configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
     libavutil      54. 31.100 / 54. 31.100
     libavcodec     56. 60.100 / 56. 60.100
     libavformat    56. 40.101 / 56. 40.101
     libavdevice    56.  4.100 / 56.  4.100
     libavfilter     5. 40.101 /  5. 40.101
     libavresample   2.  1.  0 /  2.  1.  0
     libswscale      3.  1.101 /  3.  1.101
     libswresample   1.  2.101 /  1.  2.101
     libpostproc    53.  3.100 / 53.  3.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1578324600-1-stitched.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf56.40.101
     Duration: 00:05:00.07, start: 0.000000, bitrate: 96 kb/s
       Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x480, 95 kb/s, 10 fps, 25 tbr, 10240 tbn, 20 tbc (default)
       Metadata:
         handler_name    : VideoHandler
    Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '1578324600-1-stitched.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf56.40.101
     Duration: 00:05:00.07, start: 0.000000, bitrate: 96 kb/s
       Stream #1:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x480, 95 kb/s, 10 fps, 25 tbr, 10240 tbn, 20 tbc (default)
       Metadata:
         handler_name    : VideoHandler
    Input #2, mov,mp4,m4a,3gp,3g2,mj2, from '1578324600-1-stitched.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf56.40.101
     Duration: 00:05:00.07, start: 0.000000, bitrate: 96 kb/s
       Stream #2:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x480, 95 kb/s, 10 fps, 25 tbr, 10240 tbn, 20 tbc (default)
       Metadata:
         handler_name    : VideoHandler
    Input #3, mov,mp4,m4a,3gp,3g2,mj2, from '1578324600-1-stitched.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf56.40.101
     Duration: 00:05:00.07, start: 0.000000, bitrate: 96 kb/s
       Stream #3:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x480, 95 kb/s, 10 fps, 25 tbr, 10240 tbn, 20 tbc (default)
       Metadata:
         handler_name    : VideoHandler
    [libx264 @ 0x171c9e0] using SAR=1/1
    [libx264 @ 0x171c9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    [libx264 @ 0x171c9e0] profile High, level 3.1
    [libx264 @ 0x171c9e0] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=6 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=1 keyint=10 keyint_min=1 scenecut=40 intra_refresh=0 rc_lookahead=10 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 'mosaic.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf56.40.101
       Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 10 fps, 10240 tbn, 10 tbc (default)
       Metadata:
         encoder         : Lavc56.60.100 libx264
    Stream mapping:
     Stream #0:0 (h264) -> setpts
     Stream #1:0 (h264) -> setpts
     Stream #2:0 (h264) -> setpts
     Stream #3:0 (h264) -> setpts
     overlay -> Stream #0:0 (libx264)
    Press [q] to stop, [?] for help
    [mp4 @ 0x1730600] Starting second pass: moving the moov atom to the beginning of the filerop=4497
    frame= 3002 fps= 17 q=-1.0 Lsize=   51052kB time=00:05:00.00 bitrate=1394.1kbits/s dup=0 drop=4498
    video:51017kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.068308%
    [libx264 @ 0x171c9e0] frame I:301   Avg QP:15.80  size:154257
    [libx264 @ 0x171c9e0] frame P:959   Avg QP:21.69  size:  5486
    [libx264 @ 0x171c9e0] frame B:1742  Avg QP:22.73  size:   315
    [libx264 @ 0x171c9e0] consecutive B-frames: 22.0%  0.0%  5.8% 72.2%
    [libx264 @ 0x171c9e0] mb I  I16..4:  9.7% 31.0% 59.4%
    [libx264 @ 0x171c9e0] mb P  I16..4:  0.6%  0.7%  0.2%  P16..4: 14.5%  2.8%  2.4%  0.0%  0.0%    skip:78.7%
    [libx264 @ 0x171c9e0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  2.7%  0.3%  0.0%  direct: 1.4%  skip:95.5%  L0:25.9% L1:73.3% BI: 0.9%
    [libx264 @ 0x171c9e0] 8x8 transform intra:31.8% inter:43.5%
    [libx264 @ 0x171c9e0] coded y,uvDC,uvAC intra: 83.2% 85.2% 69.5% inter: 3.0% 6.3% 0.7%
    [libx264 @ 0x171c9e0] i16 v,h,dc,p: 35% 21%  8% 36%
    [libx264 @ 0x171c9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 42% 10%  3%  2%  3%  6%  4%  5%
    [libx264 @ 0x171c9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 33%  9%  6%  5%  5%  7%  5%  6%
    [libx264 @ 0x171c9e0] i8c dc,h,v,p: 44% 29% 20%  7%
    [libx264 @ 0x171c9e0] Weighted P-Frames: Y:0.0% UV:0.0%
    [libx264 @ 0x171c9e0] ref P L0: 93.8%  6.2%
    [libx264 @ 0x171c9e0] ref B L0: 91.7%  8.3%
    [libx264 @ 0x171c9e0] ref B L1: 89.3% 10.7%
    [libx264 @ 0x171c9e0] kb/s:1392.16
  • Speed up the FFmpeg process time in Android

    19 septembre 2019, par Yogesh Paliyal

    I want to loop video until the sound stops, everything works good but it takes too much time.
    if my audio file length is 4 minutes then it takes approx of 4 minutes & the size is also too much, here is my command

    String[] cmd = new String[]{"-i",audioFile.getAbsolutePath(),"-filter_complex","movie="+videoFile.getAbsolutePath()+":loop=0,setpts=N/(FRAME_RATE*TB)","-c","copy","-y",createdFile.getAbsolutePath()};