README.md

Narabemi

Quick side-by-side video comparison tool.

Screenshots

© Blender Foundation | cloud.blender.org/spring, studio.blender.org/films/big-buck-bunny

Custom Blend Shader

float4 main(float2 uv : TEXCOORD) : COLOR
{
    float4 color0 = tex2D(input0, uv);
    float4 color1 = tex2D(input1, uv);
    float4 color = lerp(color0, color1, step(ratio, uv.x) * saturate(step(uv.y % 0.2, 0.1))); // stripe blend
    return lerp(color, borderColor,
        step(uv.x - (borderWidth / widthPx / 2.0f), ratio) *
        step(ratio, uv.x + borderWidth / widthPx / 2.0f));
}

Comparing Subtitles

Installation

Download

• Releases

Set FFmpeg path

1. Download the FFmpeg 4.4 binary and put it somewhere.
2. Edit the appsettings.json file to set the path to FFmpeg's bin directory.

Or just run the download_ffmpeg.bat file.

Building from source

Prerequisites

• .NET 6.0 SDK — required to build and run the application
• FXC shader compiler — required for the PreBuild step that compiles HLSL pixel shaders to .fxc bytecode
  • Included with the Windows SDK (install the "Windows SDK for Desktop C++ x86 Apps" or "Windows SDK for Desktop C++ amd64 Apps" component)
  • Alternatively available via the Microsoft.Windows.SDK.CPP NuGet package

Steps

# 1. Download FFmpeg binaries (places them at ./ffmpeg/bin by default)
./download_ffmpeg.bat

# 2. Build
dotnet build Narabemi/Narabemi.csproj

# 3. Run
dotnet run --project Narabemi/Narabemi.csproj

Limitations

• Video playback synchronization is not frame-accurate, not perfect.

Alternatives

• Image Comparison & Analysis Tool (ICAT)
• video-compare
• GridPlayer
• Syncplay
• FFmpeg - Create a mosaic out of several input videos

License

MIT license