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  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • 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.

Sur d’autres sites (3172)

  • When I compress ass subtitles into 1080p video, the gpu usage will get lower and lower

    5 avril 2023, par Rainfallc

    When I use it to suppress ass subtitles (subtitles that float from right to left on Chinese live broadcast websites) into a 1080p video with a duration of one hour and thirty minutes, the gpu utilization rate is getting lower and lower, ffmpeg prompts fps numbers will get lower and lower (from 68 all the way to 16) and speed will drop from 2+ to 0.3+
My GPU is NVIDIA GEFORCE 1660 SUPER, CPU is intel i5-10400
This is the command I use
ffmpeg -hwaccel cuda -c:v h264_cuvid -i 智勋勋勋勋-2023年04月03日23点30分.ts -vf scale_npp=1920:1080 -vf subtitles=智勋勋勋勋-2023年04月03日23点30分.ass -b:v 5000k -hide_banner -y -preset hq -vcodec h264_nvenc -c:a aac -b:a 320k 1234.mp4

    


    I've tried adding scale_npp, overclocking the graphics card, updating the graphics card driver, updating ffmpeg, but to no avail

    


  • ffmpeg capture raw/orignal stream from timeleak HD 72 with audio

    30 septembre 2013, par Max

    Timeleak card claim that they support Audio.
    I got the second hd75a card. (I had hd82a)

    I can't start capturing audio.

    It captures video :-

    ffmpeg -f dshow -i video="7160 HD Capture" out.mp4

    Here are options :-

    ffmpeg -f dshow -list_options true -i video="7160 HD Capture"
    

    

    
[dshow @ 000000000253ba60]   pixel_format=yuyv422  min s=720x480 fps=59.9402 max s=720x480 fps=59.9402
    
[dshow @ 000000000253ba60]   pixel_format=yuyv422  min s=720x480 fps=29.97 max s=720x480 fps=29.97
    
[dshow @ 000000000253ba60]   pixel_format=yuyv422  min s=720x576 fps=50 max s=720x576 fps=50
    
[dshow @ 000000000253ba60]   pixel_format=yuyv422  min s=720x576 fps=25 max s=720x576 fps=25
    
[dshow @ 000000000253ba60]   pixel_format=yuyv422  min s=640x480 fps=59.9402 max s=640x480 fps=59.9402
    
[dshow @ 000000000253ba60]   pixel_format=yuyv422  min s=1920x1080 fps=29.97 max s=1920x1080 fps=29.97
    
[dshow @ 000000000253ba60]   pixel_format=yuyv422  min s=1920x1080 fps=25 max s=1920x1080 fps=25
    
[dshow @ 000000000253ba60]   pixel_format=yuyv422  min s=1920x1080 fps=24 max s=1920x1080 fps=24
    
[dshow @ 000000000253ba60]   pixel_format=yuyv422  min s=1280x720 fps=59.9402 max s=1280x720 fps=59.9402
    
[dshow @ 000000000253ba60]   pixel_format=yuyv422  min s=1280x720 fps=50 max s=1280x720 fps=50
    
[dshow @ 000000000253ba60]  Pin "Audio"

    This card should encode MPEG2

    1. Does that capture command write to file original MPEG2 stream from hardware or it is re-encoded ?

    2. How do I get original MPEG2 stream ? (If first command is re-encoding it OR may be there is no way to get original encoded frames at all)

    3. Does "Video Stream" includes audio track ? (Pin "Audio")
      There is no extra audio device and it seems audio stream is in video stream.

    I wish to get raw (not re-encoded, original MPEG2 encoded by hardware) and audio. It is Ok If I will get original not encoded stream without loosing frames.

    Offtopic : If you have such card : Do you have horizontal artifact lines when picture moves ?

  • 'arecord' works but FFMPEG 'cannot open audio device'

    16 mai 2020, par kwithnail

    On my Linux-based QNAP NAS, I can successfully record my Loopback audio device using :

    



    # arecord -D default:CARD=Loopback test.wav


    



    However, FFMPEG cannot use this same audio device. It returns :

    



        [alsa @ 0x5a45880] cannot open audio device hw:default:CARD=Loopback (No such file or directory)
hw:default:CARD=Loopback: Input/output error


    



    I've also tried any number of hw: options in FFMPEG. For what it's worth, the arecord -l command returns :

    



    **** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC262 Analog [ALC262 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM]
  Subdevices: 1/1
  Subdevice #0: subdevice #0


    



    arecord -L returns :

    



    [~] # arecord -L
null
    Discard all samples (playback) or generate zero samples (capture)
sysdefault:CARD=PCH
    HDA Intel PCH, ALC262 Analog
    Default Audio Device
front:CARD=PCH,DEV=0
    HDA Intel PCH, ALC262 Analog
    Front speakers
sysdefault:CARD=Loopback
    Loopback, Loopback PCM
    Default Audio Device
front:CARD=Loopback,DEV=0
    Loopback, Loopback PCM
    Front speakers
surround21:CARD=Loopback,DEV=0
    Loopback, Loopback PCM
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=Loopback,DEV=0
    Loopback, Loopback PCM
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Loopback,DEV=0
    Loopback, Loopback PCM
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Loopback,DEV=0
    Loopback, Loopback PCM
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Loopback,DEV=0
    Loopback, Loopback PCM
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Loopback,DEV=0
    Loopback, Loopback PCM
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers


    



    FFMPEG command and response is :

    



    [~] # /share/CACHEDEV1_DATA/.qpkg/ffmpeg/ffmpeg -f alsa -i hw:default:CARD=Loopback test.mp3
ffmpeg version 4.2.1-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
ALSA lib ../../../src/pcm/pcm.c:2564:(snd_pcm_open_noupdate) Unknown PCM hw:default:CARD=Loopback
[alsa @ 0x5f64800] cannot open audio device hw:default:CARD=Loopback (No such file or directory)
hw:default:CARD=Loopback: Input/output error


    



    FFMPEG -sources alsa gives :

    



    [~] # /share/CACHEDEV1_DATA/.qpkg/ffmpeg/ffmpeg -sources alsa
ffmpeg version 4.2.1-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Auto-detected sources for alsa:
ALSA lib ../../../src/control/control.c:1375:(snd_ctl_open_noupdate) Invalid CTL hw:0
Cannot list sources.


    



    Can anyone shed some light on why this is impossible in FFMPEG and suggest what I'm doing wrong here ? FFMPEG includes the ALSA module, and is version 4.2.1. Thanks !

    


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