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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 2015toolset inVisual 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