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• libavcodec/qsvenc : enable Hyper Encode

  5 décembre 2022, par galinart

  libavcodec/qsvenc : enable Hyper Encode
  Hyper Encode uses Intel integrated and discrete graphics on one system
  
  to accelerate encoding of a single video stream.
  
  Depending on the selected parameters and codecs, performance gain on AlderLake iGPU + ARC Gfx up to 1.6x.
  More information : https://www.intel.co.uk/content/www/uk/en/architecture-and-technology/adaptix/deep-link.html
  
  Developer guide : https://github.com/oneapi-src/oneVPL-intel-gpu/blob/main/doc/HyperEncode_FeatureDeveloperGuide.md
  Hyper Encode is supported only on Windows and requires D3D11 and oneVPL.
  To enable Hyper Encode need to specify :
  
   Hyper Encode mode (-dual_gfx on or dual_gfx adaptive)
  
   Encoder : h264_qsv or hevc_qsv
  
   BRC : VBR, CQP or ICQ
  
   Lowpower mode (-low_power 1)
  
   Closed GOP for AVC or strict GOP for HEVC -idr_interval = 0 used by default
  Depending on the encoding parameters, the following parameters may need
  
  to be adjusted :
  
   g recommended >= 30 for better performance
  
   async_depth recommended >= 30 for better performance
  
   extra_hw_frames recommended equal to async_depth value
  
   bf recommended = 0 for better performance
  In the cases with fast encoding (-preset veryfast) there may be no
  
  performance gain due to the fact that the decode is slower than the encode.
  Command line examples :
  ffmpeg.exe -init_hw_device qsv:hw,child_device_type=d3d11va,child_device=0 -v verbose -y -hwaccel qsv -extra_hw_frames 60 -async_depth 60 -c:v h264_qsv -i bbb_sunflower_2160p_60fps_normal.mp4
  
   async_depth 60 -c:v h264_qsv -preset medium -g 60 -low_power 1 -bf 0 -dual_gfx on output.h265
  Signed-off-by : galinart <artem.galin@intel.com>
  

  • [DH] libavcodec/qsvenc.c
  • [DH] libavcodec/qsvenc.h
  • [DH] libavcodec/qsvenc_h264.c
  • [DH] libavcodec/qsvenc_hevc.c

• what codec to specify to accessing my HDMI-to-USB adaptor, under Linux ? [closed]

  14 mai 2022, par David

  A week or so ago,I bought a HDMI-to-USB adapter, to use to capture video
TV content from my TV's set-top box. (Xfinity, if it matters. Box generically is :
"XiD X1"...I have both the Pace and the Cisco models available here in this house.)

  


  Specifically, here's the adapter I bought,from Amazon :
https://www.amazon.com/gp/product/B09FLN63B3

  


  So, I'm fluent in both Windows (Win-11) and Linux (Debian 'Bullseye', on my chromebook).

  


  The adapter does not come with any recommendations for what software/drivers to (try to) use, but I was prepared for that.
After some google searches, I decided to first try using the cmd-line
'ffmpeg' program, because I'm
quite familiar with that (excellent !) piece of open-source software !

  


  So, after a day or two of (mostly) success recordings under Win-11, using
ffmpeg's Microsoft-based 'dshow' (aka 'DirectShow'), I decided to attempt to get
up to the same level of accomplishment on my Chromebook, under Linux, also
using 'ffmpeg'.

  


  [Ok...a very brief explanation of 'mostly' successful. I'll
post another separate question here, about the specifics of my glitches,
using 'dshow' on Windows. But, essentially, when I try to record to a MP4
file, I get 2 scenarios of glitch : #1 : Suddenly, dropped packets surges up,
and I get "1000 dropped' yellow msg #2 : On other trials, I get '...contains
no image...'.) So, I figured I should first give a Linux a chance,
before spending more effort trying to resolve the glitches on Windows.]

  


  My first snag, was learning that 'dshow' seems to be specific to 'Windows',
and thus ffmpeg is getting 'unknown' for my reference to 'dshow'. After more hours of 'guessing', I've finally learned/concluded that there are other things
(something call "DeckLink" is one such alternative ?) for Linux, but I'm unclear
what extra Linux packages might exist for ffmpeg support, or whether I will need to built a more complete 'ffmpeg' (e.g. from source code), to get things going under Linux ?

  


  Is my device able to be accessed from some tools other than 'ffmpeg' ?
(e.g. VLC or Handbrake or whatever ?) more easily, on the Linux platform ?

  


  [If I had to, I'd probably invest another $20-$50 in some other hardware
device that goes from HDMI-to-USB (USB-A/B), if it were ]

  


  All ideas are welcome...(TIA)

  


  — Dave

  


• Discord.js Music Bot ffmpeg not found ?

  13 octobre 2020, par cccmdm

  I just started learning javascript with node.js and I am attempting to create a music bot, I've set up the command handler and everything, however, I keep getting this error when I try to run the play command

  



  


  Error : FFmpeg/avconv not found !
 at Function.getInfo (C :\Users\johnd\OneDrive\Desktop\discordBot\node_modules\prism-media\src\core\FFmpeg.js:130:11)
 at Function.create (C :\Users\johnd\OneDrive\Desktop\discordBot\node_modules\prism-media\src\core\FFmpeg.js:143:38)
 at new FFmpeg (C :\Users\johnd\OneDrive\Desktop\discordBot\node_modules\prism-media\src\core\FFmpeg.js:44:27)
 at AudioPlayer.playUnknown (C :\Users\johnd\OneDrive\Desktop\discordBot\node_modules\discord.js\src\client\voice\player\BasePlayer.js:47:20)
 at VoiceConnection.play (C :\Users\johnd\OneDrive\Desktop\discordBot\node_modules\discord.js\src\client\voice\util\PlayInterface.js:71:28)
 at C :\Users\johnd\OneDrive\Desktop\discordBot\commands\play.js:7:39
 at processTicksAndRejections (internal/process/task_queues.js:97:5)

  


  



  I'll post my play function below

  



  async function playMusic(vc,songId) {
    const stream = await ytdl(songId,{type: 'opus',filter : 'audioonly'});
    vc.join().then(connection => {
        const dispatcher = connection.play(stream,{volume: 1});
        dispatcher.on('end', end => {
            console.log("Song ended!");
            vc.leave();
        }).catch(err => console.log(err));
    }).catch(err => console.log(err));
}


  



  My proof of installation : https://imgur.com/a/EFM1G6s

  



  Update 1 : I'm still looking for others with this specific problem and can't find anything.