Recherche avancée

Médias (91)

Autres articles (99)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)

  • Activation de l’inscription des visiteurs

    12 avril 2011, par

    Il est également possible d’activer l’inscription des visiteurs ce qui permettra à tout un chacun d’ouvrir soit même un compte sur le canal en question dans le cadre de projets ouverts par exemple.
    Pour ce faire, il suffit d’aller dans l’espace de configuration du site en choisissant le sous menus "Gestion des utilisateurs". Le premier formulaire visible correspond à cette fonctionnalité.
    Par défaut, MediaSPIP a créé lors de son initialisation un élément de menu dans le menu du haut de la page menant (...)

Sur d’autres sites (8848)

  • FFmpeg Successfully Pushes Stream to Nginx RTMP but Unable to Play with ffplay or VLC [closed]

    2 août 2024, par ShaoKun Lou

    FFmpeg Successfully Pushes Stream to Nginx RTMP but Unable to Play with ffplay or VLC

    


    I followed the tutorial below :tutorial

    


    to set up an RTMP server using Nginx, and successfully pushed a stream with FFmpeg.
Here is the nginx.conf file :

    


    rtmp {
        server {
                listen 1935;
                chunk_size 4096;
                allow publish 127.0.0.1;
                deny publish all;

                application live {
                        live on;
                        record off;
                        allow play all;
                }
        }
}


    


    and here is the console output from pushing the stream :

    


    ffmpeg -re -i bejeweled.mp4 -c:v libx264 -c:a aac -f flv rtmp://127.0.0.1/live/stream
ffmpeg version 6.1.1-3ubuntu5 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 13 (Ubuntu 13.2.0-23ubuntu3)
  configuration: --prefix=/usr --extra-version=3ubuntu5 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --disable-omx --enable-gnutls --enable-libaom --enable-libass --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libharfbuzz --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-openal --enable-opencl --enable-opengl --disable-sndio --enable-libvpl --disable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-ladspa --enable-libbluray --enable-libjack --enable-libpulse --enable-librabbitmq --enable-librist --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libx264 --enable-libzmq --enable-libzvbi --enable-lv2 --enable-sdl2 --enable-libplacebo --enable-librav1e --enable-pocketsphinx --enable-librsvg --enable-libjxl --enable-shared
  libavutil      58. 29.100 / 58. 29.100
  libavcodec     60. 31.102 / 60. 31.102
  libavformat    60. 16.100 / 60. 16.100
  libavdevice    60.  3.100 / 60.  3.100
  libavfilter     9. 12.100 /  9. 12.100
  libswscale      7.  5.100 /  7.  5.100
  libswresample   4. 12.100 /  4. 12.100
  libpostproc    57.  3.100 / 57.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'bejeweled.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
    description     : Bilibili VXCode Swarm Transcoder v0.7.43
  Duration: 00:03:18.39, start: 0.000000, bitrate: 424 kb/s
  Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 640x360 [SAR 1:1 DAR 16:9], 352 kb/s, 23.98 fps, 23.98 tbr, 16k tbn (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 65 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x58b1ca9cee80] using SAR=1/1
[libx264 @ 0x58b1ca9cee80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x58b1ca9cee80] profile High, level 3.0, 4:2:0, 8-bit
[libx264 @ 0x58b1ca9cee80] 264 - core 164 r3108 31e19f9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - 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=11 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=23 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, flv, to 'rtmp://127.0.0.1/live/stream':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    description     : Bilibili VXCode Swarm Transcoder v0.7.43
    encoder         : Lavf60.16.100
  Stream #0:0(und): Video: h264 ([7][0][0][0] / 0x0007), yuv420p(tv, bt709, progressive), 640x360 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 1k tbn (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
      encoder         : Lavc60.31.102 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1(und): Audio: aac (LC) ([10][0][0][0] / 0x000A), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
      encoder         : Lavc60.31.102 aac
frame=    0 fps=0.0 q=0.0 size=       1kB time=00:00:00.60 bitrate=   7.2kbits/sframe=    0 fps=0.0 q=0.0 size=       1kB time=00:00:01.11 bitrate=   3.9kbits/sframe=    0 fps=0.0 q=0.0 size=       1kB time=00:00:01.62 bitrate=   2.7kbits/sframe=    0 fps=0.0 q=0.0 size=       1kB time=00:00:02.13 bitrate=   2.0kbits/sframe=    0 fps=0.0 q=0.0 size=       1kB time=00:00:02.62 bitrate=   1.7kbits/sframe=    6 fps=2.2 q=28.0 size=       6kB time=00:00:03.15 bitrate=  16.2kbits/...


    


    But when I try to play the stream using ffplay or VLC, it gets stuck in a waiting state.
this is the console output :

    


    leo@leo-devp:~$ ffplay rtmp://127.0.0.1/live/stream
ffplay version 6.1.1-3ubuntu5 Copyright (c) 2003-2023 the FFmpeg developers
  built with gcc 13 (Ubuntu 13.2.0-23ubuntu3)
  configuration: --prefix=/usr --extra-version=3ubuntu5 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --disable-omx --enable-gnutls --enable-libaom --enable-libass --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libharfbuzz --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-openal --enable-opencl --enable-opengl --disable-sndio --enable-libvpl --disable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-ladspa --enable-libbluray --enable-libjack --enable-libpulse --enable-librabbitmq --enable-librist --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libx264 --enable-libzmq --enable-libzvbi --enable-lv2 --enable-sdl2 --enable-libplacebo --enable-librav1e --enable-pocketsphinx --enable-librsvg --enable-libjxl --enable-shared
  libavutil      58. 29.100 / 58. 29.100
  libavcodec     60. 31.102 / 60. 31.102
  libavformat    60. 16.100 / 60. 16.100
  libavdevice    60.  3.100 / 60.  3.100
  libavfilter     9. 12.100 /  9. 12.100
  libswscale      7.  5.100 /  7.  5.100
  libswresample   4. 12.100 /  4. 12.100
  libpostproc    57.  3.100 / 57.  3.100
^Cleo@leo-devp:~$ 0 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0 


    


    and this is /var/log/nginx/access.log :

    


    127.0.0.1 [02/Aug/2024:14:56:38 +0800] PUBLISH "live" "stream" "" - 415 529 "" "FMLE/3.0 (compatible; Lavf60.16" (0s)
127.0.0.1 [02/Aug/2024:14:59:59 +0800] PUBLISH "live" "stream" "" - 10501019 529 "" "FMLE/3.0 (compatible; Lavf60.16" (3m 18s)
127.0.0.1 [02/Aug/2024:15:01:21 +0800] PLAY "live" "stream" "" - 401 490 "" "LNX 9,0,124,2" (4m 35s)
127.0.0.1 [02/Aug/2024:15:09:49 +0800] PUBLISH "live" "stream" "" - 2733579 529 "" "FMLE/3.0 (compatible; Lavf60.16" (52s)
127.0.0.1 [02/Aug/2024:15:10:15 +0800] PLAY "live" "stream" "" - 372 436 "" "LNX 9,0,124,2" (54s)
127.0.0.1 [02/Aug/2024:15:11:52 +0800] PLAY "live" "stream" "" - 372 436 "" "LNX 9,0,124,2" (17s)
127.0.0.1 [02/Aug/2024:15:13:24 +0800] PLAY "live" "stream" "" - 393 472 "" "LNX 9,0,124,2" (3m 5s)
127.0.0.1 [02/Aug/2024:15:13:24 +0800] PUBLISH "live" "stream" "" - 23343914 529 "" "FMLE/3.0 (compatible; Lavf60.16" (3m 18s)
127.0.0.1 [02/Aug/2024:15:13:39 +0800] PLAY "live" "stream" "" - 372 436 "" "LNX 9,0,124,2" (10s)
127.0.0.1 [02/Aug/2024:15:15:48 +0800] PLAY "live" "stream" "" - 393 472 "" "LNX 9,0,124,2" (3m 34s)


    


    There are no relevant log records in /var/log/nginx/error.log

    


    the firwall status :

    


    leo@leo-devp:~$ sudo ufw status


    


    [sudo] leo 的密码:
状态: 激活

    


    至 动作 来自

    



    


    3306/tcp ALLOW Anywhere
    
1935/tcp ALLOW Anywhere
    
19355/tcp ALLOW Anywhere
    
19355 ALLOW Anywhere
    
1935 ALLOW Anywhere
    
3306/tcp (v6) ALLOW Anywhere (v6)
    
1935/tcp (v6) ALLOW Anywhere (v6)
    
19355/tcp (v6) ALLOW Anywhere (v6)
    
19355 (v6) ALLOW Anywhere (v6)
    
1935 (v6) ALLOW Anywhere (v6)

    


    Please point out what I did wrong and how to correct it. Thank you.

    


  • libopenmpt @ 0000024ec3fc9400c Format libopenmpt detected only with low score of 1, misdetection possible [closed]

    9 décembre 2024, par cao ting

    When I want to use ffmpeg to convert xm file to mp3, I get the error message below :

    


    ['ffmpeg', '-i', 'E:\\dodo\\test.xm', 'E:\\dodo\\test.mp3']
ffmpeg version N-110138-gb4eca5cce2-20230402 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.2.0 (crosstool-NG 1.25.0.152_89671bf)
  configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --disable-libmfx --enable-libvpl --enable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-version=20230402
  libavutil      58.  5.100 / 58.  5.100
  libavcodec     60.  9.100 / 60.  9.100
  libavformat    60.  4.101 / 60.  4.101
  libavdevice    60.  2.100 / 60.  2.100
  libavfilter     9.  5.100 /  9.  5.100
  libswscale      7.  2.100 /  7.  2.100
  libswresample   4. 11.100 /  4. 11.100
  libpostproc    57.  2.100 / 57.  2.100
[libopenmpt @ 0000024ec3fc9400] Format libopenmpt detected only with low score of 1, misdetection possible!
Incorrect BOM value
Error reading comment frame, skipped
[libopenmpt @ 0000024ec3fc9400] openmpt_module_create_from_memory2: ERROR: error loading file
E:\dodo\test.xm: Invalid data found when processing input


    


    How can I solve this problem ?
anyone has idea ?
thanks

    


  • FFMPEG : FATAL error, file duration too long for timebase ?

    26 février 2024, par clx

    I want to add a subtitle track on a ProRes files with ffmpeg command on Windows :

    


    ffmpeg.exe  -i "X:\Test\Tokyo01.mov" -i "X:\Test\SubtitleEN.srt" -f mov -c:v copy -c:a copy -c:s mov_text -map 0:v -map 0:a -map "1:0" "-metadata:s:s:0" "language=EN" "-metadata:s:s:0" "handler_name=English"  "-metadata:s:s:0" "title=English" -y "X:\Test\Tokyo01_WithSub.mov" 


    


    I have a fatal error at the end :

    


    ...
FATAL error, file duration too long for timebase, this file will not be1737.7kbits/s speed=0.979x
playable with QuickTime. Choose a different timebase with -video_track_timescale or a different container format
...


    


    Source file looks good with FFProbe :

    


    
[STREAM]
index=0
codec_name=prores
codec_long_name=Apple ProRes (iCodec Pro)
profile=HQ
codec_type=video
codec_time_base=15139/363340
codec_tag_string=apch
codec_tag=0x68637061
width=3996
height=2160
coded_width=3996
coded_height=2160
closed_captions=0
has_b_frames=0
sample_aspect_ratio=N/A
display_aspect_ratio=N/A
pix_fmt=yuv422p10le
level=-99
color_range=tv
color_space=unknown
color_transfer=unknown
color_primaries=unknown
chroma_location=unspecified
field_order=unknown
timecode=N/A
refs=1
id=N/A
r_frame_rate=24/1
avg_frame_rate=363340/15139
time_base=1/90000
start_pts=0
start_time=0.000000
duration_ts=340627500
duration=3784.750000
bit_rate=656235296
max_bit_rate=N/A
bits_per_raw_sample=10
nb_frames=90835


    


    The complete FFmpeg return console :

    


    ffmpeg version 2023-09-04-git-f8503b4c33-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-dxva2 --enable-d3d11va --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      58. 19.100 / 58. 19.100
  libavcodec     60. 25.100 / 60. 25.100
  libavformat    60. 11.100 / 60. 11.100
  libavdevice    60.  2.101 / 60.  2.101
  libavfilter     9. 11.100 /  9. 11.100
  libswscale      7.  3.100 /  7.  3.100
  libswresample   4. 11.100 /  4. 11.100
  libpostproc    57.  2.100 / 57.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'X:\Test\Tokyo01.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 512
    compatible_brands: qt
    encoder         : Lavf58.76.100
  Duration: 01:03:04.79, start: 0.000000, bitrate: 663143 kb/s
  Stream #0:0[0x1]: Video: prores (HQ) (apch / 0x68637061), yuv422p10le, 3996x2160, 656235 kb/s, 24 fps, 24 tbr, 90k tbn (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : FFMP
  Stream #0:1[0x2]: Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 5.1, s32 (24 bit), 6912 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
[srt @ 000001bc0ec608c0] UTF16 is automatically converted to UTF8, do not specify a character encoding
Input #1, srt, from 'X:\Test\SubtitleEN.srt':
  Duration: N/A, bitrate: N/A
  Stream #1:0: Subtitle: subrip
Output #0, mov, to 'X:\Test\Tokyo01_WithSub.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 512
    compatible_brands: qt
    encoder         : Lavf60.11.100
  Stream #0:0: Video: prores (HQ) (apch / 0x68637061), yuv422p10le, 3996x2160, q=2-31, 656235 kb/s, 24 fps, 24 tbr, 90k tbn (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : FFMP
  Stream #0:1: Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 5.1, s32 (24 bit), 6912 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
  Stream #0:2(EN): Subtitle: mov_text (text / 0x74786574)
    Metadata:
      handler_name    : English
      title           : English
      encoder         : Lavc60.25.100 mov_text
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
  Stream #1:0 -> #0:2 (subrip (srt) -> mov_text (native))
Press [q] to stop, [?] for help
FATAL error, file duration too long for timebase, this file will not be1737.7kbits/s speed=0.979x
playable with QuickTime. Choose a different timebase with -video_track_timescale or a different container format
[out#0/mov @ 000001bc0e847340] video:303184287kB audio:3193418kB subtitle:9kB other streams:0kB global headers:0kB muxing overhead: 0.000585%
frame=90834 fps= 23 q=-1.0 Lsize=306379507kB time=01:03:04.77 bitrate=663147.3kbits/s speed=0.979x



    


    I don't find documentation for mentionned command "-video_track_timescale" to change timescale (here 1/90000 ).
I don't understand the problem ??