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A simple YUV420 video codec optimized for single threaded decoding performance for Windows x64

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rainerzufalldererste/slapcodec2D

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slapcodec2D

A simple video codec. Derived from slapcodec. Written in C for the purpose of easily playing back compressed (non-stereoscopic) videos on a single thread in high performance applications. Image compression based on JPEG (libjpeg-turbo).

Main Features

  • Very simple API
  • Very small code base
  • Runs on a single thread
  • Comes with a few simple examples (encoder, decoder, asynchronous decoder)
  • Licensed under MIT (Apart from the encoder example which is licensed under GPLv3 because it includes ffmpeg
  • SIMD for intra frame en/decoding (We don't recommend using intra frame coding at this point in time, because it can create very noticable artifacts.)
  • Allows random access of frames if not using intra frame coding (IntraFrameStep = 1)

Decoder Benchmark

  • decoder example can be found in examples/decoder
  • single threaded
  • no pre-loading
  • rendering through SDL2 to a window without scaling
  • reading the video file from disk
  • Running on an Intel(R) Core(TM) i5-3470S CPU @ 2.90GHz
  • Compiled with the Visual Studio 2015 toolset in Visual Studio 2017.
Resolution Synchronous Decoding Speed Filesize / Frame Count IntraFrameStep Content Quality / IFrameQuality
424x240 ~2120 Frames per Second ~5 kB / Frame 1 video game (dark) 20 / -
424x240 ~1905 Frames per Second ~7.5 kB / Frame 1 same video game (dark) 50 / -
424x240 ~1735 Frames per Second ~11 kB / Frame 1 same video game (dark) 75 / -
848x480 ~506 Frames per Second ~37 kB / Frame 1 video game (colorful) 50 / -
848x480 ~451 Frames per Second ~55 kB / Frame 1 same video game (colorful) 75 / -
960x720 ~238 Frames per Second ~25 kB / Frame 1 static video footage 75 / -
1280x720 ~250 Frames per Second ~56 kB / Frame 1 animation 50 / -
1280x720 ~244 Frames per Second ~78.5 kB / Frame 1 same animation 75 / -
1440x1080 ~148 Frames per Second ~101.5 kB / Frame 1 very shaky video footage 75 / -
1920x1080 ~112 Frames per Second ~110.5 kB / Frame 1 animation / video footage 50 / -
1920x1080 ~107 Frames per Second ~160.5 kB / Frame 1 same animation / video footage 75 / -
7680x3840 ~8 Frames per Second ~2.5 MB / Frame 1 static video footage 50 / -
7680x3840 ~7 Frames per Second ~3.5 MB / Frame 1 same static video footage 75 / -

Setup

git clone https://github.com/rainerzufalldererste/slapcodec2D.git
cd slapcodec2D
git submodule update --init --recursive
create_project.bat

Choose your preferred compiler toolset

MSBuild /p:Configuration=Release /nologo /v:m

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A simple YUV420 video codec optimized for single threaded decoding performance for Windows x64

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