Recherche avancée

Médias (0)

Mot : - Tags -/formulaire

Aucun média correspondant à vos critères n’est disponible sur le site.

Autres articles (46)

  • Submit enhancements and plugins

    13 avril 2011

    If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
    You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone.

  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

  • Script d’installation automatique de MediaSPIP

    25 avril 2011, par

    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
    Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
    La documentation de l’utilisation du script d’installation (...)

Sur d’autres sites (6113)

  • Merge commit ’fa57059079190242517701120cfdccad93c866da’

    29 juin 2016, par Clément Bœsch
    Merge commit ’fa57059079190242517701120cfdccad93c866da’

    * commit ’fa57059079190242517701120cfdccad93c866da’ :
    
  h264 : move initialising the implicit pred weight table for MBAFF
    

    Merged-by : Clément Bœsch <clement@stupeflix.com>
    • [DH] libavcodec/h264_slice.c

  • installing x264 0.120 for redhat el7

    16 août 2017, par Mohammad Alkhaldi

    im trying to install x264 for redhat el7

    i cloned it from github then compiled it and installed

    this is the clone link :http://git.videolan.org/git/x264.git

    when i run x264 —version it gives me this output

    x264 0.148.x
    built on Aug 16 2017, gcc : 4.8.5 20150623 (Red Hat 4.8.5-11)
    x264 configuration : —bit-depth=8 —chroma-format=all
    libx264 configuration : —bit-depth=8 —chroma-format=all
    x264 license : GPL version 2 or later

    i need x264 0.120 for installing x264-plugins-ugly

    Thank you in advance.

  • ffmpeg how to encode first then use it for another output

    10 août 2017, par mahdi gh

    I’m trying to capture screen with gdigrab and combine int with a sound and then send it on my decklink sdi device.

    here is my code to capture :

    ffmpeg -framerate 25 -thread_queue_size 512 -f gdigrab -i title="Play" -f dshow -i audio="CABLE Output (VB-Audio Virtual Cable)" -af aresample=resampler=soxr -ar 48000 -acodec pcm_s16le -ac 2 -c:v libx264 -qp 0 -preset ultrafast "output.avi"

    here is my code for output to ffmpeg :

    ffmpeg -i output.avi -f decklink -pix_fmt uyvy422 "DeckLink SDI (2)"

    this way it works, but when I combine these two arguments to send the output to decklink card on the fly, ffmpeg stops working. here is the combination code :

    ffmpeg -framerate 25 -thread_queue_size 512 -f gdigrab -i title="Play" -f dshow -i audio="CABLE Output (VB-Audio Virtual Cable)" -af aresample=resampler=soxr -ar 48000 -acodec pcm_s16le -ac 2  -f decklink -pix_fmt uyvy422 "DeckLink SDI (2)"

    I have tried so many different combinations but no luck. it works only if i store it on a file then use that file as input. Is there a way to tell ffmpeg to use the result of first command as input of second command ?

    Thanks

    Update :
    Here is log report :

        ffmpeg started on 2017-08-08 at 12:26:36
    
Report written to "ffmpeg-20170808-122636.log"
    
Command line:
    
ffmpeg -framerate 25 -thread_queue_size 512 -f gdigrab -i "title=Play" -c:v rawvideo -f dshow -i "audio=CABLE Output (VB-Audio Virtual Cable)" -af "aresample=resampler=soxr" -ar 48000 -acodec pcm_s16le -ac 2 -map 0:v:0 -map 1:a:0 -f decklink -pix_fmt uyvy422 "DeckLink SDI (2)" -report
    
ffmpeg version N-71608-ga924b83 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 4.9.2 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
    
  libavutil      54. 23.101 / 54. 23.101
    
  libavcodec     56. 35.101 / 56. 35.101
    
  libavformat    56. 30.100 / 56. 30.100
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 14.100 /  5. 14.100
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Splitting the commandline.
    
Reading option '-framerate' ... matched as AVOption 'framerate' with argument '25'.
    
Reading option '-thread_queue_size' ... matched as option 'thread_queue_size' (set the maximum number of queued packets from the demuxer) with argument '512'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'gdigrab'.
    
Reading option '-i' ... matched as input file with argument 'title=Play'.
    
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'rawvideo'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'dshow'.
    
Reading option '-i' ... matched as input file with argument 'audio=CABLE Output (VB-Audio Virtual Cable)'.
    
Reading option '-af' ... matched as option 'af' (set audio filters) with argument 'aresample=resampler=soxr'.
    
Reading option '-ar' ... matched as option 'ar' (set audio sampling rate (in Hz)) with argument '48000'.
    
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'pcm_s16le'.
    
Reading option '-ac' ... matched as option 'ac' (set number of audio channels) with argument '2'.
    
Reading option '-map' ... matched as option 'map' (set input stream mapping) with argument '0:v:0'.
    
Reading option '-map' ... matched as option 'map' (set input stream mapping) with argument '1:a:0'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'decklink'.
    
Reading option '-pix_fmt' ... matched as option 'pix_fmt' (set pixel format) with argument 'uyvy422'.
    
Reading option 'DeckLink SDI (2)' ... matched as output file.
    
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
    
Finished splitting the commandline.
    
Parsing a group of options: global .
    
Applying option report (generate a report) with argument 1.
    
Successfully parsed a group of options.
    
Parsing a group of options: input file title=Play.
    
Applying option thread_queue_size (set the maximum number of queued packets from the demuxer) with argument 512.
    
Applying option f (force format) with argument gdigrab.
    
Successfully parsed a group of options.
    
Opening an input file: title=Play.
    
[gdigrab @ 0000000002d3f2a0] Found window Play, capturing 720x576x32 at (0,0)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (588,602) -> (-271,597)
    
[gdigrab @ 0000000002d3f2a0] All info found
    
Input #0, gdigrab, from 'title=Play':
    
  Duration: N/A, start: 1502178996.958615, bitrate: 331786 kb/s
    
    Stream #0:0, 1, 1/1000000: Video: bmp, bgra, 720x576, 331786 kb/s, 25 tbr, 1000k tbn, 25 tbc
    
Successfully opened the file.
    
Parsing a group of options: input file audio=CABLE Output (VB-Audio Virtual Cable).
    
Applying option c:v (codec name) with argument rawvideo.
    
Applying option f (force format) with argument dshow.
    
Successfully parsed a group of options.
    
Opening an input file: audio=CABLE Output (VB-Audio Virtual Cable).
    
[dshow @ 0000000002d3c340] Selecting pin Capture on audio only
    
dshow passing through packet of type audio size  88200 timestamp 111632750000 orig timestamp 111632750000
    
[dshow @ 0000000002d3c340] All info found
    
Guessed Channel Layout for  Input Stream #1.0 : stereo
    
Input #1, dshow, from 'audio=CABLE Output (VB-Audio Virtual Cable)':
    
  Duration: N/A, start: 11163.275000, bitrate: 1411 kb/s
    
    Stream #1:0, 1, 1/10000000: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
    
Successfully opened the file.
    
Parsing a group of options: output file DeckLink SDI (2).
    
Applying option af (set audio filters) with argument aresample=resampler=soxr.
    
Applying option ar (set audio sampling rate (in Hz)) with argument 48000.
    
Applying option acodec (force audio codec ('copy' to copy stream)) with argument pcm_s16le.
    
Applying option ac (set number of audio channels) with argument 2.
    
Applying option map (set input stream mapping) with argument 0:v:0.
    
Applying option map (set input stream mapping) with argument 1:a:0.
    
Applying option f (force format) with argument decklink.
    
Applying option pix_fmt (set pixel format) with argument uyvy422.
    
Successfully parsed a group of options.
    
Opening an output file: DeckLink SDI (2).
    
Successfully opened the file.
    
detected 2 logical cores
    
[graph 0 input from stream 0:0 @ 0000000002dd7ea0] Setting 'video_size' to value '720x576'
    
[graph 0 input from stream 0:0 @ 0000000002dd7ea0] Setting 'pix_fmt' to value '30'
    
[graph 0 input from stream 0:0 @ 0000000002dd7ea0] Setting 'time_base' to value '1/1000000'
    
[graph 0 input from stream 0:0 @ 0000000002dd7ea0] Setting 'pixel_aspect' to value '0/1'
    
[graph 0 input from stream 0:0 @ 0000000002dd7ea0] Setting 'sws_param' to value 'flags=2'
    
[graph 0 input from stream 0:0 @ 0000000002dd7ea0] Setting 'frame_rate' to value '25/1'
    
[graph 0 input from stream 0:0 @ 0000000002dd7ea0] w:720 h:576 pixfmt:bgra tb:1/1000000 fr:25/1 sar:0/1 sws_param:flags=2
    
[format @ 0000000002d3df00] compat: called with args=[uyvy422]
    
[format @ 0000000002d3df00] Setting 'pix_fmts' to value 'uyvy422'
    
[auto-inserted scaler 0 @ 0000000002d44ca0] Setting 'flags' to value '0x4'
    
[auto-inserted scaler 0 @ 0000000002d44ca0] w:iw h:ih flags:'0x4' interl:0
    
[format @ 0000000002d3df00] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed_null_0' and the filter 'format'
    
[AVFilterGraph @ 0000000002e586c0] query_formats: 4 queried, 2 merged, 1 already done, 0 delayed
    
[auto-inserted scaler 0 @ 0000000002d44ca0] w:720 h:576 fmt:bgra sar:0/1 -> w:720 h:576 fmt:uyvy422 sar:0/1 flags:0x4
    
[Parsed_aresample_0 @ 0000000002d513a0] Setting 'resampler' to value 'soxr'
    
[graph 1 input from stream 1:0 @ 0000000002d51460] Setting 'time_base' to value '1/44100'
    
[graph 1 input from stream 1:0 @ 0000000002d51460] Setting 'sample_rate' to value '44100'
    
[graph 1 input from stream 1:0 @ 0000000002d51460] Setting 'sample_fmt' to value 's16'
    
[graph 1 input from stream 1:0 @ 0000000002d51460] Setting 'channel_layout' to value '0x3'
    
[graph 1 input from stream 1:0 @ 0000000002d51460] tb:1/44100 samplefmt:s16 samplerate:44100 chlayout:0x3
    
[audio format for output stream 0:1 @ 0000000002d51520] Setting 'sample_fmts' to value 's16'
    
[audio format for output stream 0:1 @ 0000000002d51520] Setting 'sample_rates' to value '48000'
    
[audio format for output stream 0:1 @ 0000000002d51520] Setting 'channel_layouts' to value '0x3'
    
[AVFilterGraph @ 0000000002d4d0c0] query_formats: 4 queried, 9 merged, 0 already done, 0 delayed
    
[Parsed_aresample_0 @ 0000000002d513a0] ch:2 chl:stereo fmt:s16 r:44100Hz -> ch:2 chl:stereo fmt:s16 r:48000Hz
    
dshow passing through packet of type audio size  88200 timestamp 111637810000 orig timestamp 111637810000
    
[decklink @ 0000000002dd6a00] Found Decklink mode 720 x 576 with rate 25.00(i)
    
Output #0, decklink, to 'DeckLink SDI (2)':
    
  Metadata:
    
    encoder         : Lavf56.30.100
    
    Stream #0:0, 0, 1/25: Video: rawvideo (UYVY / 0x59565955), uyvy422, 720x576, q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
    
    Metadata:
    
      encoder         : Lavc56.35.101 rawvideo
    
    Stream #0:1, 0, 1/48000: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
    
    Metadata:
    
      encoder         : Lavc56.35.101 pcm_s16le
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (bmp (native) -> rawvideo (native))
    
  Stream #1:0 -> #0:1 (pcm_s16le (native) -> pcm_s16le (native))
    
Press [q] to stop, [?] for help
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
Cliping frame in rate conversion by 0.000008
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[decklink @ 0000000002dd6a00] Encoder did not produce proper pts, making some up.
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
*** 40 dup!
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[decklink @ 0000000002dd6a00] Buffered video frames: 1.
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[decklink @ 0000000002dd6a00] Buffered video frames: 2.
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[decklink @ 0000000002dd6a00] Buffered video frames: 3.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 4.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 5.
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[decklink @ 0000000002dd6a00] Buffered video frames: 6.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 7.
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[decklink @ 0000000002dd6a00] Buffered video frames: 8.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 9.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 10.
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[decklink @ 0000000002dd6a00] Buffered video frames: 11.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 12.
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[decklink @ 0000000002dd6a00] Buffered video frames: 13.
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
dshow passing through packet of type audio size  88200 timestamp 111642810000 orig timestamp 111642810000
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[decklink @ 0000000002dd6a00] Buffered video frames: 14.
    
[decklink @ 0000000002dd6a00] Ending audio preroll.
    
[decklink @ 0000000002dd6a00] Starting scheduled playback.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 15.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 16.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 17.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 18.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 19.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 20.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 21.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 22.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 23.
    
[decklink @ 0000000002dd6a00] Buffered video frames: 24.
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[decklink @ 0000000002dd6a00] Buffered video frames: 24.
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
frame=   42 fps=0.0 q=0.0 size=N/A time=00:00:01.68 bitrate=N/A dup=40 drop=0    
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
dshow passing through packet of type audio size  88200 timestamp 111647710000 orig timestamp 111647710000
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (689,472) -> (-170,467)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (814,496) -> (-45,491)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (814,496) -> (-45,491)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (811,497) -> (-48,492)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (811,497) -> (-48,492)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (811,497) -> (-48,492)
    
[gdigrab @ 0000000002d3f2a0] Cursor pos (806,497) -> (-53,492)

Navigation