QSVEnc

by rigaya

日本語版はこちら＞＞

This software is meant to investigate performance and image quality of HW encoder (QSV) of Intel. There are 2 types of software developed, one is command line version that runs independently, and the nother is a output plug-in of Aviutl.

• QSVEncC.exe ... Command line version supporting transcoding.
• QSVEnc.auo ... Output plugin for Aviutl.

Downloads & update history

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github releases

Install

Install instructions for Windows and Linux

Build

Build instructions for Windows and Linux

System Requirements

Windows

Windows 10/11 (x86/x64)
Aviutl 1.00 or later (QSVEnc.auo)

Linux

Debian/Ubuntu (QSVEncC)
Fedora (QSVEncC)
Requires Broadwell CPU or later.
It may be possible to run on other distributions (not tested).

Precautions for using QSVEnc

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.

Usage and options of QSVEncC

Option list and details of QSVEncC

Major Features

Common to QSVEnc.auo / QSVEncC

• Encoding using QuickSyncVideo
  • H.264/AVC
  • H.265/HEVC (8bit/10bit)
  • MPEG2
  • VP9 (8bit/10bit)
  • AV1 (8bit/10bit)
• Encode mode of QuickSyncVideo
  • CQP (Fixed Quantization)
  • CBR (Constant bitrate)
  • VBR (Variable bitrate)
  • AVBR (Adaptive Variable bitrate)
  • QVBR (Quality based Variable bitrate)
  • LA (Lookahead mode)
  • LA-HRD (HRD compatible Lookahead mode)
  • ICQ (Constant Quality)
  • LA-ICQ (Constant Quality with Lookahead)
  • VCM (Video Conference mode)
• Quality preset of 7 steps
• Interlaced encoding (by PAFF)
• Supports setting of codec profile & level, SAR, colormatrix, maxbitrate, GOP len, etc...
• Calculation of ssim/psnr of the encode
• Supports various vpp(video pre-processing) filters
  • MFX (Media Fixed function) filters
    • resize
    • deinterlace (normal / bob / it)
    • detail enhancement
    • denoise
    • image stablizier
  • OpenCL filters
    • deinterlacer
      • afs (Automatic field shift)
      • nnedi
    • decimate
    • mpdecimate
    • colorspace conversion
      • hdr2sdr
    • delogo
    • subburn
    • resize
      • bilinear
      • spline16, spline36, spline64
      • lanczos2, lanczos3, lanczos4
    • transpose / rotate / flip
    • padding
    • deband
    • noise reduction
      • knn (K-nearest neighbor)
      • pmd (modified pmd method)
    • edge / detail enhancement
      • unsharp
      • edgelevel (edge ​​level adjustment)
      • warpsharp

QSVEncC

• Supports QSV(hw) decoding
  • MPEG2
  • H.264/AVC
  • HEVC
  • VP8
  • VP9
  • AV1
• Supports various formats such as avs, vpy, y4m, and raw
• Supports demux/muxing using libavformat
• Supports decode using libavcodec

QSVEnc.auo (Aviutl plugin)

• Audio encoding
• Mux audio and chapter
• afs (Automatic field shift) support

Supported Features

This depends on the version of QSVEnc, the generation of the GPU, and also the GPU driver.

Supported HW Encoder (@ Windows OS)

Supported HW Decoder

Auto GPU selection in multi GPU envinronment (Windows Only)

QSVEncC will automatically select a GPU depending on the options used, when there are multiple GPUs available which support QSV. --device option can be used to specify on which GPU to run manually.

1. Select GPU which supports...
   Items below will be checked whether the GPU supports it or not

• Codec, Profile, Level
• Additionally, below items will be checked if specified
  • 10bit depth encoding
  • HW decode

2. If there are multiple GPUs which suports all the items checked in 1. and 2., GPU below will be prefered.

• GPU which has low Video Engine(VE) utilization
• GPU which has low GPU core utilization

The purpose of selecting GPU with lower VE/GPU ulitization is to assign tasks to mulitple GPUs and improve the throughput of the tasks.

Please note that VE and GPU ulitization are check at the initialization pahse of the app, and there are delays in values taken. Therefore, it is likely that the multiple tasks started at the same time to run on the same GPU, and divided into multiple GPUs, even if the options are supported in every GPUs.

QSVEnc source code

• MIT license.
• This software depends on oneVPL, ffmpeg, libass, tinyxml2, dtl, clRNG, ttmath & Caption2Ass. For these licenses, please see the header part of the corresponding source and license.txt.

About source code

Windows ... VC build
Linux ... makefile + gcc/clang build

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