DGMPGDec 3.0.0.1 / DGDecNV 2.55

Download DGMPGDec 3.0.0.1 Free →

DGMPGDec solves the fundamental frame loss problems that plague DVD2AVI and MPEG2DEC, delivering all coded frames from input streams without the 3-5 frame losses that cause serious audio sync issues in professional video workflows.

Why DGMPGDec Became Essential for Video Professionals

DGMPGDec emerged as the definitive solution to DVD2AVI's critical deficiencies.

The widely-used DVD2AVI and MPEG2Dec tools suffer from frame loss that creates audio synchronization problems and incorrect frame access during timeline navigation.

For professionals working with DVD extraction, Blu-ray processing, and legacy media conversion, these lost frames represent unacceptable quality degradation.

Core Components: DGIndex & DGDecode

DGIndex - The Frame-Accurate Indexer
DGIndex creates precise indexes of MPEG video streams, containing the location of each frame in the input stream plus additional frame information. This index file (D2V) enables the companion DGDecode filter to provide frame-accurate serving via AviSynth scripts.

DGDecode - The Professional Decoder
DGDecode is an MPEG-1/2 decoder plug-in designed for AviSynth v2.6 or higher and Avisynth+, offering YV12, I420, and YUY2 colorspace output with optimized iDCTs, post-process deblocking, deringing, and luminosity filtering.

Technical Advantages Over Legacy Tools

Eliminates Frame Loss Problems
DVD2AVI historically loses frames due to three specific issues: failure to flush final frame digits, arbitrary frame count reduction, and incorrect D2V generation for B-frames before P-frames in opening GOPs. DGMPGDec's engineering completely resolves these problems.

Enhanced Format Support
DGMPGDec decodes MPEG2 streams from DVD VOBs, Blu-ray content, captured transport streams, DVB/digital/HDTV streams, and files including *.mpg, *.m2v, *.ts, *.m2ts, and *.pva formats.

Professional Audio Demultiplexing
Advanced audio demuxing capabilities handle AC3, DTS, AAC, MPA, and LPCM streams, with integrated luminance filtering and cropping functionality for broadcast-quality output.

Version 3.0.0.1 Updates & Improvements

Modern Architecture Enhancements
Version 3.0.0.1 discontinued 32-bit support, removed VFAPI functionality, added indexing_path parameters, and improved MPEG2Source() handling to prevent parameter overwrites during auto-indexing operations.

AviSynth Integration Refinements
The latest release includes enhanced DGDecode manual documentation and improved compatibility with modern AviSynth implementations, ensuring seamless integration with contemporary video processing workflows.

Professional Workflow Integration

AviSynth Script Requirements
DGMPGDec requires AviSynth 2.5 or higher for operation. Users create AVS scripts calling LoadPlugin() for DGDecode.dll, then use MPEG2Source() to access the indexed D2V project files.

Template-Based Automation
DGIndex supports AVS template files using placeholder variables like vid and aud for automated script generation, streamlining repetitive encoding workflows for professional production environments.

Modern Alternatives Comparison

While DGMPGDec remains crucial for legacy workflows, modern alternatives include FFmpeg (command-line multimedia framework), HandBrake (user-friendly GUI transcoder), and Shutter Encoder (professional open-source converter) for users not requiring frame-accurate MPEG2 indexing.

However, for professionals working with:

• Frame-accurate DVD/Blu-ray analysis.
• Legacy MPEG2 stream processing.
• AviSynth-based encoding pipelines.
• Broadcast media restoration projects.

DGMPGDec's precision remains unmatched in the industry.

Technical Specifications

• Components: DGIndex.exe, DGDecode.dll, comprehensive documentation.
• File Size: 483KB portable package.
• Requirements: Windows 64-bit, AviSynth 2.6+
• Supported Formats: MPEG1/2, VOB, M2TS, TS, PVA, transport streams.
• License: GNU General Public License v2
• Developer: Donald A. Graft.

Download & Installation

Latest binaries and source code are available from the official RationalQM repository, distributed under GNU GPL v2 licensing terms.

The software requires no installation - simply extract DGIndex.exe and DGDecode.dll to your preferred directory alongside AviSynth.

Download DGMPGDec 3.0.0.1 Now →
Free download • Professional MPEG2 processing • Frame-accurate indexing