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  • 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.

  • Qu’est ce qu’un éditorial

    21 juin 2013, par

    Ecrivez votre de point de vue dans un article. Celui-ci sera rangé dans une rubrique prévue à cet effet.
    Un éditorial est un article de type texte uniquement. Il a pour objectif de ranger les points de vue dans une rubrique dédiée. Un seul éditorial est placé à la une en page d’accueil. Pour consulter les précédents, consultez la rubrique dédiée.
    Vous pouvez personnaliser le formulaire de création d’un éditorial.
    Formulaire de création d’un éditorial Dans le cas d’un document de type éditorial, les (...)

  • Que fait exactement ce script ?

    18 janvier 2011, par

    Ce script est écrit en bash. Il est donc facilement utilisable sur n’importe quel serveur.
    Il n’est compatible qu’avec une liste de distributions précises (voir Liste des distributions compatibles).
    Installation de dépendances de MediaSPIP
    Son rôle principal est d’installer l’ensemble des dépendances logicielles nécessaires coté serveur à savoir :
    Les outils de base pour pouvoir installer le reste des dépendances Les outils de développements : build-essential (via APT depuis les dépôts officiels) ; (...)

Sur d’autres sites (2118)

  • FFMpeg - Overlay not being shown when enable=between parameter is added

    19 août 2020, par Khawar Raza

    I am using below command to add transitions effect between videos using overlays such that when one videos is about to finish, the overlay gets visible. Before showing overlays, I have to add padding and concatenate videos make one single video and then display overlays. :

    


    ffmpeg 
-i input1.mp4 
-i input2.mp4 
-i input3.mp4 
-i transition1.mp4 
-i transition2.mp4 
-filter_complex 
"[0:v]pad=width=1080:height=1920:x=(1080-iw)*0.5:y=(1920-ih)*0.5:color=black[video0];
[1:v]pad=width=1080:height=1920:x=(1080-iw)*0.5:y=(1920-ih)*0.5:color=black[video1];
[2:v]pad=width=1080:height=1920:x=(1080-iw)*0.5:y=(1920-ih)*0.5:color=black[video2];
[video0][video1][video2]concat=n=3:v=1:a=0[outv];
[3:v]colorkey=0x00d800:0.1[t0];
[t0]scale=w=1080:h=1920[tr0];
[4:v]colorkey=0x00d800:0.1[t1];
[t1]scale=w=1080:h=1920[tr1];
[outv][tr0]overlay=0:0:enable='between(t\,7\,9)'[out0];
[out0][tr1]overlay=0:0:enable='between(t\,12\,15)'[out1];
[0:a][1:a][2:a]concat=n=3:v=0:a=1[audio]" 
-vsync 0 -c:v libx264 -pix_fmt yuv420p -map [out1] -map [audio] -preset ultrafast output.mp4


    


    But above command does not show any overlay video. If I remove enable=between(t, start, end) from overlay parameters, all the overlay gets displayed at video start. I am very beginner to video editing and to FFMpeg. Can anybody guide me what I am doing wrong here ?

    


    Here is the log from console :

    


    ffmpeg version v4.4-dev-416
I/mobile-ffmpeg:  Copyright (c) 2000-2020 the FFmpeg developers
      built with Android (6454773 based on r365631c2) clang version 9.0.8 (https://android.googlesource.com/toolchain/llvm-project 98c855489587874b2a325e7a516b99d838599c6f) (based on LLVM 9.0.8svn)
      configuration: --cross-prefix=aarch64-linux-android- --sysroot=/files/android-sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --cc=aarch64-linux-android24-clang --cxx=aarch64-linux-android24-clang++ --extra-libs='-L/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --target-os=android --enable-neon --enable-asm --enable-inline-asm --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --enable-shared --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-openssl --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-static --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gmp --enable-gnutls --enable-libmp3lame --enable-libass --enable-iconv --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libxml2 --enable-libopencore-amrnb --enable-libshine --enable-libspeex --enable-libwavpack --enable-libkvazaar --enable-libx264 --enable-gpl --enable-libxvid --enable-gpl --enable-libx265 --enable-gpl --enable-libvidstab --enable-gpl --enable-libilbc --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libaom --enable-libtwolame --disable-sdl2 --enable-libvo-amrwbenc --enable-zlib --enable-mediacodec
      libavutil      56. 55.100 / 56. 55.100
      libavcodec     58. 96.100 / 58. 96.100
      libavformat    58. 48.100 / 58. 48.100
      libavdevice    58. 11.101 / 58. 11.101
      libavfilter     7. 87.100 /  7. 87.100
      libswscale      5.  8.100 /  5.  8.100
      libswresample   3.  8.100 /  3.  8.100

I/mobile-ffmpeg: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input1.mp4':
      Metadata:
        major_brand     : 
    mp42
        minor_version   : 
    0
        compatible_brands: 
    isommp42
        creation_time   : 
    2020-08-12T17:21:49.000000Z
        com.android.version: 
    9
      Duration: 
I/mobile-ffmpeg: 00:00:08.12
    , start: 
    0.000000
    , bitrate: 
    17298 kb/s
        Stream #0:0
    (eng)
    : Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 16309 kb/s
    , SAR 1:1 DAR 16:9
    , 
    28.70 fps, 
    29.50 tbr, 
    90k tbn, 
    60 tbc
     (default)
        Metadata:
          rotate          : 
    90
          creation_time   : 
    2020-08-12T17:21:49.000000Z
          handler_name    : 
    VideoHandle
        Side data:
          
    displaymatrix: rotation of -90.00 degrees
        Stream #0:1
I/mobile-ffmpeg: (eng)
    : Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s
     (default)
        Metadata:
          creation_time   : 
    2020-08-12T17:21:49.000000Z
          handler_name    : 
    SoundHandle
I/mobile-ffmpeg: Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'input2.mp4':
      Metadata:
        major_brand     : 
    isom
        minor_version   : 
    512
        compatible_brands: 
    isomiso2avc1mp41
        encoder         : 
    Lavf57.25.100
I/mobile-ffmpeg:   Duration: 
    00:00:05.97
    , start: 
    0.000000
    , bitrate: 
    770 kb/s
        Stream #1:0
    (und)
    : Audio: aac (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 128 kb/s
     (default)
        Metadata:
          handler_name    : 
    SoundHandler
        Stream #1:1
    (und)
    : Video: h264 (avc1 / 0x31637661), yuv420p, 368x480, 608 kb/s
    , 
    27.29 fps, 
I/mobile-ffmpeg: 120 tbr, 
    12k tbn, 
    60 tbc
     (default)
        Metadata:
          handler_name    : 
    VideoHandler
I/mobile-ffmpeg: Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'input3.mp4':
      Metadata:
        major_brand     : 
    isom
        minor_version   : 
    512
        compatible_brands: 
    isomiso2avc1mp41
I/mobile-ffmpeg:     encoder         : 
    Lavf55.19.104
      Duration: 
    00:00:13.05
    , start: 
    0.000000
    , bitrate: 
    2453 kb/s
        Chapter #2:0: 
    start 0.000000, 
    end 13.033000
        Metadata:
          title           : 
        Stream #2:0
    (und)
    : Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s
     (default)
I/mobile-ffmpeg:     Metadata:
          handler_name    : 
    SoundHandler
        Stream #2:1
    (und)
    : Video: h264 (avc1 / 0x31637661), yuv420p, 640x480, 2320 kb/s
    , 
    25 fps, 
    25 tbr, 
    1200k tbn, 
    50 tbc
     (default)
        Metadata:
          handler_name    : 
    VideoHandler
        Stream #2:2
    (eng)
    : Data: bin_data (text / 0x74786574), 0 kb/s
I/mobile-ffmpeg:     Metadata:
          handler_name    : 
    SubtitleHandler
I/mobile-ffmpeg: Input #3, mov,mp4,m4a,3gp,3g2,mj2, from 'transition1.mp4':
      Metadata:
        major_brand     : 
    mp42
        minor_version   : 
    0
I/mobile-ffmpeg:     compatible_brands: 
    mp41isom
        creation_time   : 
    2020-08-17T09:24:04.000000Z
      Duration: 
    00:00:02.22
    , start: 
    0.000000
    , bitrate: 
    2445 kb/s
        Stream #3:0
    (und)
    : Video: h264 (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 2414 kb/s
    , 
    30 fps, 
    30 tbr, 
    30k tbn, 
    60 tbc
     (default)
I/mobile-ffmpeg:     Metadata:
          creation_time   : 
    2020-08-17T09:24:04.000000Z
          handler_name    : 
    VideoHandler
          encoder         : 
    AVC Coding
        Stream #3:1
    (und)
    : Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 79 kb/s
     (default)
        Metadata:
          creation_time   : 
I/mobile-ffmpeg: 2020-08-17T09:24:04.000000Z
          handler_name    : 
I/mobile-ffmpeg: SoundHandler
I/mobile-ffmpeg: Input #4, mov,mp4,m4a,3gp,3g2,mj2, from 'transition2.mp4':
      Metadata:
        major_brand     : 
    mp42
        minor_version   : 
    0
        compatible_brands: 
    mp41isom
        creation_time   : 
    2020-08-17T09:21:33.000000Z
      Duration: 
    00:00:02.22
    , start: 
    0.000000
    , bitrate: 
    2331 kb/s
I/mobile-ffmpeg:     Stream #4:0
    (und)
    : Video: h264 (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 2298 kb/s
    , 
    30 fps, 
    30 tbr, 
    30k tbn, 
    60 tbc
     (default)
        Metadata:
          creation_time   : 
    2020-08-17T09:21:33.000000Z
          handler_name    : 
    VideoHandler
          encoder         : 
    AVC Coding
        Stream #4:1
    (und)
I/mobile-ffmpeg: : Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 79 kb/s
     (default)
        Metadata:
          creation_time   : 
    2020-08-17T09:21:33.000000Z
          handler_name    : 
    SoundHandler
I/mobile-ffmpeg: Stream mapping:
      Stream #0:0 (h264) -> pad
      Stream #0:1 (aac) -> concat:in0:a0
      Stream #1:0 (aac) -> concat:in1:a0
      Stream #1:1 (h264) -> pad
      Stream #2:0 (aac) -> concat:in2:a0
      Stream #2:1 (h264) -> pad
      Stream #3:0 (h264) -> colorkey
      Stream #4:0 (h264) -> colorkey
I/mobile-ffmpeg:   overlay
     -> Stream #0:0 (libx264)
      concat
     -> Stream #0:1 (aac)
    Press [q] to stop, [?] for help
W/mobile-ffmpeg: [graph 0 input from stream 0:0 @ 0x73485c3fc0] sws_param option is deprecated and ignored
    [graph 0 input from stream 1:1 @ 0x73485c4140] sws_param option is deprecated and ignored
    [graph 0 input from stream 2:1 @ 0x73485c4200] sws_param option is deprecated and ignored
    [graph 0 input from stream 3:0 @ 0x73485c42c0] sws_param option is deprecated and ignored
W/mobile-ffmpeg: [graph 0 input from stream 4:0 @ 0x73485c4380] sws_param option is deprecated and ignored
W/mobile-ffmpeg: [swscaler @ 0x7324db9000] No accelerated colorspace conversion found from yuv420p to argb.
W/mobile-ffmpeg: [swscaler @ 0x7324876000] No accelerated colorspace conversion found from yuv420p to argb.
I/mobile-ffmpeg: [libx264 @ 0x7332f9a500] using SAR=1/1
W/mobile-ffmpeg: [libx264 @ 0x7332f9a500] MB rate (8160000000) > level limit (16711680)
I/mobile-ffmpeg: [libx264 @ 0x7332f9a500] using cpu capabilities: ARMv8 NEON
I/mobile-ffmpeg: [libx264 @ 0x7332f9a500] profile Constrained Baseline, level 6.2, 4:2:0, 8-bit
    [libx264 @ 0x7332f9a500] 264 - core 160 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 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=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
I/mobile-ffmpeg: Output #0, mp4, to 'output.mp4':
      Metadata:
I/mobile-ffmpeg:     major_brand     : 
    mp42
        minor_version   : 
    0
        compatible_brands: 
    isommp42
        com.android.version: 
    9
        encoder         : 
    Lavf58.48.100
        Chapter #0:0: 
    start 0.000000, 
    end 13.033000
        Metadata:
          title           : 
        Stream #0:0
I/mobile-ffmpeg: : Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 1080x1920 [SAR 1:1 DAR 9:16], q=-1--1
    , 
    1000k tbn, 
    1000k tbc
     (default)
        Metadata:
          encoder         : 
    Lavc58.96.100 libx264
        Side data:
          
    cpb: 
    bitrate max/min/avg: 0/0/0 buffer size: 0 
    vbv_delay: N/A
        Stream #0:1
    : Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s
     (default)
        Metadata:
I/mobile-ffmpeg:       encoder         : 
    Lavc58.96.100 aac
E/Progress: Progress: 3.6918316
D/mobile-ffmpeg: Progress: frame: 1, time: 1002, Pct: 0.036918
I/mobile-ffmpeg: frame=    1 fps=0.0 q=0.0 size=       0kB time=00:00:01.00 bitrate=   0.5kbits/s speed=1.13x      


    


  • lavf/srtdec : rewrite parsing logic

    22 décembre 2015, par Clément Bœsch
    lavf/srtdec : rewrite parsing logic
    

    Fixes Ticket #5032

    The samples in Ticket #5032 is using \r\r\n as line breaks. Since we
    already are handling \r, or \n, or \r\n as line breaks, \r\n\n will be
    considered as a double line breaks. This is an issue because
    ff_subtitles_read_text_chunk() will as a result stop extracting a chunk
    after just one line.

    So instead of parsing the SRT by "chunks" (which means splitting every
    double LB), this new parser is detecting timing lines, and split the
    events on this basis. While this sounds safe and simple, it needs to
    take into account the event number preceding the timing line while
    handling situations such as :

    - event number starting at 0 or actually any number instead of 1
    - event numbers not being ordered at all
    - event number being followed by text garbage (this really happened,
    see Ticket #4898)
    - event payload containing one or multiple number (a protagonist saying
    a count-down, a date or whatever) which could be confused with a
    chapter number
    - event number being empty (see Ticket #2167)
    - all kind of weird line breaks can appear randomly like wild pokémons
    - untrustable line breaks (Ticket #5032)

    The sample madness.srt tries to sum up most of this into one sample,
    ticket5032-rrn.srt is the file containing \r\r\n line breaks. and
    empty-events-2167.srt contains empty events.

    • [DH] libavformat/srtdec.c
    • [DH] tests/fate/subtitles.mak
    • [DH] tests/ref/fate/sub-srt-empty-events
    • [DH] tests/ref/fate/sub-srt-madness-timeshift
    • [DH] tests/ref/fate/sub-srt-rrn-remux
  • mmaldec : limit internal buffering

    28 janvier 2016, par wm4
    mmaldec : limit internal buffering
    

    This uses a new MMAL feature, which limits the number of extra frames
    that can be buffered within the decoder. VIDEO_MAX_NUM_CALLBACKS can
    be defined as positive or negative number. Positive numbers are
    absolute, and can lead to deadlocks if the user underestimates the
    number of required buffers. Negative numbers specify the number of extra
    buffers, e.g. -1 means no extra buffer, (-1-N) means N extra buffers.

    Set a gratuitous default of -11 (N=10). This is much lower than the
    firmware default, which appears to be 96.

    This is backwards compatible, but needs a symbol only present in newer
    firmware headers. (It’s an enum item, so it requires a check in
    configure.)

    • [DH] configure
    • [DH] libavcodec/mmaldec.c