Lightning Shrink

Brief: What is DVDFab Lightning-Shrink?
What Does DVDFab Lightning-Shrink Do?
In What Circumstances Can I Benefit from DVDFab Lightning-Shrink?

Whenever Blu-ray compression gets involved, such as, rip a feature-length Blu-ray movie off onto computer HDD as an ISO in BD25 size, or compress a BD50 size ISO on HDD into BD25 size;

Are There Any Special System Requirements?
How Do I Apply DVDFab Lightning-Shrink?

It's easy: Open Common Settings panel via the gear icon at the top right corner of DVDFab 9 newest version, navigate to General>A/V Codec, and then mark the option of "Enable Lightning-Shrink when applicable". Next, click the "OK" button on that window and restart DVDFab 9 so that the settings shall take effect.

Comparison between IQS and IQS-based Lightning-Shrink:
Time Consumption Comparison
Hardware & System Copy Mode Source DVDFab 9063 (with IQS only) DVDFab 9070 (with Lightning-Shrink)
Win8 64-bit, i7-3770 Main Movie 2012.iso 50mins 41s 23mins 15s
BD Ripper: mp4.h264.aac 48mins 12s 21mins 33s
Win7 64-bit, i7-2600 Main Movie 58mins 37s 36mins 25s
Win7 64-bit, i5-2400 Main Movie 72mins 40s 37mins 59s
"Within One Hour"-- Lightning-Shrink Test on other popular movies:
Hardware & System Copy Mode DVDFab Version Source Time Consumption Comparison
Win7 64-bit, i5-2400 Full Disc DVDFab 9070 (with Lightning-Shrink) The Karate Kid 48mins
The Hunger Games 53mins
Manhattan_AC (Thor) 61mins
Source Code 36mins
Fifth Element 42mins
Comparison Table between Software and NVENC-based Lightning-Shrink:
Hardware & System Source Copy Mode AV Codec Time Consumption
Win 7 64-bit; CPU: i5-2400; RAM: 4G; NVIDIA GeForce GTX-750; Driver: 335.23 WHQI Hunger Games.iso BD Ripper to MP4 Software 142mins 5s
NVENC-based Lightning-Shrink 18mins 15s
BD Ripper to MKV Software 105mins 41s
NVENC-based Lightning-Shrink 12mins 15s
BD Ripper to AVI Software 146mins 28s
NVENC-based Lightning-Shrink 13mins 41s
Main Movie BD25 Software 73mins 40s
NVENC-based Lightning-Shrink 17mins 25s

For further information about DVDFab Lightning-Shrink technology, please refer to http://blog.dvdfab.cn/lightning-shrink.html