Simple Video Compressor with Trim, Scale & CRF Control

A simple yet powerful Windows desktop application built using WPF and C# for compressing videos using FFmpeg. Includes features like video preview, trimming, resolution scaling, CRF-based compression, and file size comparison.

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🔧 Features

• 🎞️ Video Preview before compression
• ✂️ Trim Video using a range slider (select start & end)
• ⚖️ Scale Resolution
  • None (no scaling)
  • 3/4 (75% of original)
  • 1/2 (50% of original)
  • 1/4 (25% of original)
• 🔍 Seek Slider for isolated video seeking
• 🔄 CRF Slider for setting compression quality
• 📊 Live Logging of FFmpeg output and final results
• 📁 Output File Size Comparison (before & after)

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📥 Installation Instructions

🔽 Download

Grab the latest Setup EXE from the Releases page.

• ✅ Includes FFmpeg already

⚙️ Requirements

• .NET Desktop Runtime 8.0 (x64) Download from: https://dotnet.microsoft.com/en-us/download/dotnet/8.0

Required only if the app doesn't launch after installation
Make sure to install the Desktop App Runtime (not the SDK or ASP.NET runtime)

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🖼️ UI Overview

• Seek Slider: Scrub through the video without affecting trim selection
• Range Slider: Select start and end time for trimming
• Video Preview: Automatically updates when seeking or scrubbing
• Compression Options: Scale, CRF, Start & End time
• Compress Button: Runs FFmpeg with selected parameters

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📦 Dependencies

• .NET 8
• FFmpeg (bundled or placed in same folder as the executable)
• Xceed.Wpf.Toolkit for range slider control

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🚀 Usage

1. Launch the application
2. Select the input video file and an output folder
3. Use the seek slider to preview video
4. Set start and end time with the range slider
5. Select scale option (None, 3/4, 1/2, 1/4)
6. Adjust the CRF slider (lower = better quality, higher = smaller file)
7. Click Compress
8. See the output log and compare input/output file sizes

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📄 Final Compression Log Includes

• ✅ Success message
• 📁 Input & Output file sizes in MB
• 🎯 CRF level
• 🖼️ Scale setting (or None)
• ⏱️ Start time, end time, and total trimmed video duration

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⚠️ Notes

• The FFmpeg executable (ffmpeg.exe) must be available in the same directory as the app or in the system PATH.
• If scale is set to None, the original resolution will be preserved.
• CRF values typically range from 18 (high quality) to 28 (low quality).
• Audio settings are kept default.