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Autres articles (78)

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 est la première version de MediaSPIP stable.
    Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • Mise à disposition des fichiers

    14 avril 2011, par

    Par défaut, lors de son initialisation, MediaSPIP ne permet pas aux visiteurs de télécharger les fichiers qu’ils soient originaux ou le résultat de leur transformation ou encodage. Il permet uniquement de les visualiser.
    Cependant, il est possible et facile d’autoriser les visiteurs à avoir accès à ces documents et ce sous différentes formes.
    Tout cela se passe dans la page de configuration du squelette. Il vous faut aller dans l’espace d’administration du canal, et choisir dans la navigation (...)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

Sur d’autres sites (9399)

  • Construct ffmpeg command to do picture-in-picture for part of a video

    20 novembre 2015, par Arthur A. Gleckler

    I run a programming hobbyist users’ group, and I’ve started to video-record the talks given each time we meet. I’m trying to construct an ffmpeg command to take two video input streams, one a screen capture and the other of a speaker, and combine them into one video with picture-in-picture, taking the audio from the speaker video. I have basic picture-in-picture working in a simple ffmpeg command, but I want to be able to specify that the beginning and end of the video show just the speaker, while the middle is picture-in-picture with the speaker in the upper right-hand corner.

    Here’s what I have so far :

    ffmpeg \
    
  -ss 22 \
    
  -i "capture.mp4" \
    
  -ss 32 \
    
  -i "speaker.mov" \
    
  -filter_complex "[1] split=3[s1][s2][s3]; [s1] trim=0:10, scale=1920x1080 [prefix]; [s2] trim=10:, scale=iw/5:ih/5 [pip]; [s3] trim=0:0, scale=1920x1080 [suffix]; [0] copy [c]; [c][pip] overlay=main_w-overlay_w:0 [body]; [prefix][body][suffix] concat=n=3 [out]" \
    
  -map "[out]" \
    
  -profile:v baseline \
    
  -level 3.0 \
    
  -b:v 440k \
    
  -vcodec libx264 \
    
  -acodec copy \
    
  -y \
    
  ffmpeg-test.mov

    Right now, there are two problems :

    • no sound appears in the output

    • in the picture-in-picture section, the speaker’s motion isn’t smooth ; the video jumps as if he had been sampled every half second even though the speaker video is at 29.97 fps. (Perhaps the problem is that it’s matching the capture frame rate, which is 5 fps.)

    I’m trying to do this in just one command in order to make the processing as quick as possible.

    Is there any way to accomplish this with ffmpeg ? It would really help me to be able to automate this process as much as possible.

    Thanks.

    EDIT : Per LordNeckbeard’s request, here is the full console output :

    ffmpeg version 2.8.1 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with Apple LLVM version 7.0.0 (clang-700.0.72)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.1_1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
    
  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 'capture.mp4':
    
  Metadata:
    
major_brand     : mp42
    
minor_version   : 0
    
compatible_brands: mp42isomavc1
    
creation_time   : 2015-11-09 17:29:41
    
  Duration: 01:42:51.90, start: 0.000000, bitrate: 115 kb/s
    
Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 16000 Hz, mono, fltp, 4 kb/s (default)
    
Metadata:
    
  handler_name    : AAC stream handler
    
Stream #0:1(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 109 kb/s, 5 fps, 5 tbr, 90k tbn, 180k tbc (default)
    
Metadata:
    
  handler_name    : Citrix h264 stream handler
    
  encoder         : AVC Coding
    
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'speaker.mov':
    
  Metadata:
    
major_brand     : qt  
    
minor_version   : 537199360
    
compatible_brands: qt  
    
creation_time   : 2015-11-09 21:17:52
    
  Duration: 00:59:57.60, start: 0.000000, bitrate: 7264 kb/s
    
Stream #1:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(bt709), 1440x1080 [SAR 4:3 DAR 16:9], 5724 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 59.94 tbc (default)
    
Metadata:
    
  creation_time   : 2015-11-09 21:17:52
    
  handler_name    : Apple Alias Data Handler
    
  encoder         : AVCHD 1080i60
    
  timecode        : 00:00:00;00
    
Stream #1:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default)
    
Metadata:
    
  creation_time   : 2015-11-09 21:17:52
    
  handler_name    : Apple Alias Data Handler
    
Stream #1:2(eng): Data: none (tmcd / 0x64636D74)
    
Metadata:
    
  creation_time   : 2015-11-09 21:17:52
    
  handler_name    : Apple Alias Data Handler
    
  timecode        : 00:00:00;00
    
[libx264 @ 0x7f99a980de00] using SAR=1/1
    
[libx264 @ 0x7f99a980de00] frame MB size (120x68) > level limit (1620)
    
[libx264 @ 0x7f99a980de00] DPB size (1 frames, 8160 mbs) > level limit (0 frames, 8100 mbs)
    
[libx264 @ 0x7f99a980de00] MB rate (244555) > level limit (40500)
    
[libx264 @ 0x7f99a980de00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 0x7f99a980de00] profile Constrained Baseline, level 3.0
    
[libx264 @ 0x7f99a980de00] 264 - core 148 r2601 a0cd7d3 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 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=40 rc=abr mbtree=1 bitrate=440 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mov, to 'cli-ffmpeg-test.mov':
    
  Metadata:
    
major_brand     : mp42
    
minor_version   : 0
    
compatible_brands: mp42isomavc1
    
encoder         : Lavf56.40.101
    
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 440 kb/s, 29.97 fps, 11988 tbn, 29.97 tbc (default)
    
Metadata:
    
  encoder         : Lavc56.60.100 libx264
    
Stream mapping:
    
  Stream #0:1 (h264) -> copy
    
  Stream #1:0 (h264) -> split
    
  concat -> Stream #0:0 (libx264)
    
Press [q] to stop, [?] for help
    
frame=184483 fps=117 q=-1.0 Lsize=  256071kB time=01:42:35.58 bitrate= 340.8kbits/s dup=153456 drop=0    
    
video:255343kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.285118%
    
[libx264 @ 0x7f99a980de00] frame I:779   Avg QP: 5.70  size:181781
    
[libx264 @ 0x7f99a980de00] frame P:183704 Avg QP:10.00  size:   652
    
[libx264 @ 0x7f99a980de00] mb I  I16..4: 77.8%  0.0% 22.2%
    
[libx264 @ 0x7f99a980de00] mb P  I16..4:  0.1%  0.0%  0.0%  P16..4:  0.4%  0.1%  0.1%  0.0%  0.0%    skip:99.3%
    
[libx264 @ 0x7f99a980de00] final ratefactor: 13.35
    
[libx264 @ 0x7f99a980de00] coded y,uvDC,uvAC intra: 21.1% 28.5% 19.4% inter: 0.2% 0.2% 0.1%
    
[libx264 @ 0x7f99a980de00] i16 v,h,dc,p: 74% 23%  1%  2%
    
[libx264 @ 0x7f99a980de00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 26% 15%  4%  4%  5%  4%  4%  5%
    
[libx264 @ 0x7f99a980de00] i8c dc,h,v,p: 68% 20% 10%  1%
    
[libx264 @ 0x7f99a980de00] kb/s:339.82

    Thanks again.

  • ffmpeg overlay video with transparent background

    27 octobre 2015, par endryha

    I have 2 videos : background (mp4) and overlay (mov), overlay has transparent background. I am trying to put video with transparent background as overlay on top of background video. But unfortunately overlay completely cover background video with black background instead of transparency.
    I am using following command :

    Here is the full output for the command :

    ffmpeg -y -i rec_20151027_123445.mp4 -vf "[in]format=rgba[ina];movie=overlay_1920x1080_1.mov[o];[ina][o]overlay=0:0" -vcodec qtrle converted.mov
    

    
ffmpeg version 2.6 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.6_1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
    
  libavutil      54. 20.100 / 54. 20.100
    
  libavcodec     56. 26.100 / 56. 26.100
    
  libavformat    56. 25.101 / 56. 25.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 11.102 /  5. 11.102
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'rec_20151027_123445.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2015-10-27 10:34:57
    
    location        : +50.0474+036.2031/
    
    location-eng    : +50.0474+036.2031/
    
  Duration: 00:00:06.04, start: 0.000000, bitrate: 16863 kb/s
    
    Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 16837 kb/s, SAR 1:1 DAR 16:9, 29.62 fps, 29.75 tbr, 90k tbn, 180k tbc (default)
    
    Metadata:
    
      creation_time   : 2015-10-27 10:34:57
    
      handler_name    : VideoHandle
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 95 kb/s (default)
    
    Metadata:
    
      creation_time   : 2015-10-27 10:34:57
    
      handler_name    : SoundHandle
    
[swscaler @ 0x7fa3db0ada00] No accelerated colorspace conversion found from yuva420p to argb.
    
Output #0, mov, to 'converted.mov':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    location-eng    : +50.0474+036.2031/
    
    location        : +50.0474+036.2031/
    
    encoder         : Lavf56.25.101
    
    Stream #0:0(eng): Video: qtrle (rle  / 0x20656C72), argb, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.75 fps, 15232 tbn, 29.75 tbc (default)
    
    Metadata:
    
      creation_time   : 2015-10-27 10:34:57
    
      handler_name    : VideoHandle
    
      encoder         : Lavc56.26.100 qtrle
    
    Stream #0:1(eng): Audio: aac (libvo_aacenc) (mp4a / 0x6134706D), 48000 Hz, mono, s16, 128 kb/s (default)
    
    Metadata:
    
      creation_time   : 2015-10-27 10:34:57
    
      handler_name    : SoundHandle
    
      encoder         : Lavc56.26.100 libvo_aacenc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> qtrle (native))
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (libvo_aacenc))
    
Press [q] to stop, [?] for help
    
frame=  179 fps= 19 q=0.0 Lsize=  126621kB time=00:00:06.05 bitrate=171213.2kbits/s dup=1 drop=1    
    
video:126519kB audio:95kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.005055%

  • FFmpeg : Concatenating two video files causing static output

    15 octobre 2015, par roy

    I have two .avi video files that I am trying to concat together.

    I have a files.txt that has in it :

    file './1_tmp.avi'
    
file './2_tmp.avi'

    FFprobe for 1_tmp.avi gives me :

    ffprobe version 2.7.2 Copyright (c) 2007-2015 the FFmpeg developers
    
  built with gcc 4.8.5 (Gentoo 4.8.5 p1.3, pie-0.6.2)
    
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar --optflags=' ' --disable-static --enable-avfilter --enable-avresample --disable-stripping --enable-version3 --disable-indev=v4l2 --disable-outdev=v4l2 --disable-indev=oss --disable-indev=jack --disable-outdev=oss --disable-outdev=sdl --enable-nonfree --enable-bzlib --disable-runtime-cpudetect --disable-debug --disable-doc --disable-gnutls --enable-gpl --enable-hardcoded-tables --enable-iconv --disable-lzma --enable-network --disable-openssl --enable-postproc --disable-libsmbclient --disable-ffplay --disable-vaapi --disable-vdpau --enable-xlib --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --enable-zlib --disable-libcdio --disable-libiec61883 --disable-libdc1394 --disable-libcaca --disable-openal --disable-opengl --disable-libv4l2 --disable-libpulse --disable-libopencore-amrwb --disable-libopencore-amrnb --enable-libfdk-aac --disable-libopenjpeg --disable-libbluray --disable-libcelt --disable-libgme --disable-libgsm --disable-libmodplug --disable-libopus --disable-libquvi --disable-librtmp --disable-libssh --disable-libschroedinger --disable-libspeex --disable-libvorbis --enable-libvpx --disable-libzvbi --disable-libbs2b --disable-libflite --disable-frei0r --disable-libfribidi --disable-fontconfig --disable-ladspa --disable-libass --disable-libfreetype --disable-libsoxr --enable-pthreads --enable-libvo-aacenc --disable-libvo-amrwbenc --enable-libmp3lame --disable-libaacplus --disable-libfaac --disable-libtheora --disable-libtwolame --disable-libwavpack --disable-libwebp --enable-libx264 --disable-libx265 --disable-libxvid --enable-x11grab --disable-amd3dnow --disable-amd3dnowext --disable-fma4 --disable-xop --cpu=core-avx-i
    
  libavutil      54. 27.100 / 54. 27.100
    
  libavcodec     56. 41.100 / 56. 41.100
    
  libavformat    56. 36.100 / 56. 36.100
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 16.101 /  5. 16.101
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  2.100 /  1.  2.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, avi, from '1_tmp.avi':
    
  Metadata:
    
    encoder         : Lavf56.36.100
    
  Duration: 00:00:19.00, start: 0.000000, bitrate: 179869 kb/s
    
    Stream #0:0: Video: huffyuv (HFYU / 0x55594648), bgr0, 1024x768, 180390 kb/s, 18 fps, 18 tbr, 18 tbn, 18 tbc

    and for 2_tmp.avi :

    ffprobe version 2.7.2 Copyright (c) 2007-2015 the FFmpeg developers
    
  built with gcc 4.8.5 (Gentoo 4.8.5 p1.3, pie-0.6.2)
    
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar --optflags=' ' --disable-static --enable-avfilter --enable-avresample --disable-stripping --enable-version3 --disable-indev=v4l2 --disable-outdev=v4l2 --disable-indev=oss --disable-indev=jack --disable-outdev=oss --disable-outdev=sdl --enable-nonfree --enable-bzlib --disable-runtime-cpudetect --disable-debug --disable-doc --disable-gnutls --enable-gpl --enable-hardcoded-tables --enable-iconv --disable-lzma --enable-network --disable-openssl --enable-postproc --disable-libsmbclient --disable-ffplay --disable-vaapi --disable-vdpau --enable-xlib --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --enable-zlib --disable-libcdio --disable-libiec61883 --disable-libdc1394 --disable-libcaca --disable-openal --disable-opengl --disable-libv4l2 --disable-libpulse --disable-libopencore-amrwb --disable-libopencore-amrnb --enable-libfdk-aac --disable-libopenjpeg --disable-libbluray --disable-libcelt --disable-libgme --disable-libgsm --disable-libmodplug --disable-libopus --disable-libquvi --disable-librtmp --disable-libssh --disable-libschroedinger --disable-libspeex --disable-libvorbis --enable-libvpx --disable-libzvbi --disable-libbs2b --disable-libflite --disable-frei0r --disable-libfribidi --disable-fontconfig --disable-ladspa --disable-libass --disable-libfreetype --disable-libsoxr --enable-pthreads --enable-libvo-aacenc --disable-libvo-amrwbenc --enable-libmp3lame --disable-libaacplus --disable-libfaac --disable-libtheora --disable-libtwolame --disable-libwavpack --disable-libwebp --enable-libx264 --disable-libx265 --disable-libxvid --enable-x11grab --disable-amd3dnow --disable-amd3dnowext --disable-fma4 --disable-xop --cpu=core-avx-i
    
  libavutil      54. 27.100 / 54. 27.100
    
  libavcodec     56. 41.100 / 56. 41.100
    
  libavformat    56. 36.100 / 56. 36.100
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 16.101 /  5. 16.101
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  2.100 /  1.  2.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, avi, from '2_tmp.avi':
    
  Metadata:
    
    encoder         : Lavf56.36.100
    
  Duration: 00:00:56.00, start: 0.000000, bitrate: 160560 kb/s
    
    Stream #0:0: Video: huffyuv (HFYU / 0x55594648), bgr0, 1024x768, 160714 kb/s, 18 fps, 18 tbr, 18 tbn, 18 tbc

    There are only video streams, they look to be the same codecs/fps

    I am using this command to concatenate them :

    ffmpeg -f concat -i files.txt -c:v copy -y output.avi

    I don’t get any output from the terminal and it outputs a file.

    The file opens and the content in 1_tmp.avi plays fine, at the same quality, but when it gets to the point in the video where 2_tmp.avi should be, it’s pixelated static all the way through (see image below).

    static screen for second file after concatentation - mama **did not** say there would be days like this.

    If I use a command like :

    ffmpeg -i 1_tmp.avi -i 2_tmp.avi -filter_complex "[0:0] [1:0] concat=n=2:v=1 [v]" -map "[v]" output.avi

    I do get full output of both videos merged together, but it is dropped to an mpeg codec and the quality loss is noticeably prominent.

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