The Fastest Video Converter among the World.
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How to & Tips
Convert Video
by Oswald
Updated on Nov 21, 2025
Thank you for choosing WonderFox. One of the standout features of our flagship product, HD Video Converter Factory Pro, is its Lightning Mode. If you’re not yet familiar with how it works, the article below will give you a clear explanation. It will help you understand why HD Video Converter Factory Pro is one of the fastest video converters available and what exactly enables it to convert videos faster.
👇 Download HD Video Converter Factory Pro here to experience ultra-fast video conversion for yourself:
I Don’t Have All DaySimply put, you can convert video faster. No more agony of waiting!
Lightning Mode stands for 50x faster conversion drove by WonderFox 2nd Generation Rapid Video Encoding Technology (GRVE-2). Which result in the fact that HD Video Converter Factory Pro is much swifter in unpacking & encapsulation than any other video converters. It helps our users to significantly save their time during video conversion.
Fastest Video Converter for Windows
WonderFox delivers fast, efficient video conversions. With Lightning Mode, batch conversion, and hardware acceleration, HD Video Converter Factory Pro is built to save you time.
The faster, the better. Download now and speed up your workflow!
Fast Video Conversion TestWell, check it out. That’s the average value from 20 format conversion tests we took with SD, HD, FHD, UHD(4K), and FUHD(8K) videos on HD Video Convert Factory Pro. Lightning Mode is significantly helpful when you are dealing with large files.
| Test results (Conversion time) | SD | HD | FHD | UHD | FUHD |
| Size | 28.6MB | 104.2MB | 416MB | 976MB | 2878.9MB |
| Lightning Mode ON | 1s | 36s | 45s | 51s | 126s |
| Lightning Mode OFF | 1s | 70s | 9min | 20min | 110min |
| Traditional Converter | 3s | 86s | 32min | 1h | More than 2h |
Check Original Videos’ Encoders(1). Lightning Mode applies to specific video conversions. Check out the detailed list of video conversions that have access to Lightning Mode in Part Two below.
💡 How to Check the Encoder of the Original/Output Video
- Click on the “File information” button to check the original video encoder.
Smart Fit Encoders for Output Videos- Click on “Parameter settings” after customizing output format to check the program default encoder for your output video.
Don’t Adjust Any Parameter(2) Don't change video parameters before conversion. Customize audio parameters at will, that’s fine.
Before starting, please free downloadfree download the software.
For specific video conversions, HD Video Converter Factory Pro automatically performs lightning fast conversions. The lightning icon indicates that it’s on.
The types of conversions that support lightning mode are categorized by encoders as follows. Three types of files are listed: Video, Web files, 4K/HD; Just as the category box from video conversion interface.
Note that as for 4K/HD, to activate Lightning Mode, the original file’s parameter should be identical with the ready-made resolution profile.
Convert H.264 encoded videos:
Video: MP4, MKV, AVI, MOV, M4V, TS, MTS, M2TS, F4V, FLV, 3GP2, H264
Web: MP4 H264
4K/HD: MP4 H264 (with resolution same as original), MKV H264 (with resolution same as original)
to one another.
Convert H.265 encoded videos:
Video: MP4, MKV, MOV, TS, FLV, “H265 for MP4”, “H265 for MKV”
Web: MP4 H265
4K/HD: MP4 H265 (with resolution same as original), MKV H265 (with resolution same as original)
to one another.
Learn More: H265 vs H264
Convert MPEG4 encoded videos:
Video: MP4, MOV, M4V, MTS, M2TS, 3GP2
to one another.
Also See: MPEG-4 VS H.264 | MPEG-4 VS MP4
Convert DIVX encoded videos:
Video: AVI, DIVX
to each other.
Convert XVID encoded videos:
Video: AVI, M4V, XVID
to one another.
Convert VP8 encoded videos:
Web: WebM VP8
to one another.
Convert VP9 encoded videos:
Video: MKV, WebM, VP9
Web: WebM VP9
to one another.
Convert AV1 encoded videos:
Video: MP4, MKV, WebM, AV1
Web: MP4 AV1
4K/HD: MP4 AV1 (with resolution same as original), MKV AV1 (with resolution same as original)
to one another.
Convert MPEG2VIDEO encoded videos:
Video: MPG, VOB
to one another.
Convert WMV1, WMV2, WMV3 encoded videos:
Video: WMV
to each other.
Convert FLV encoded videos:
Video: SWF
to each other.
Speed Video ConverterWonderFox HD Video Converter Factory Pro is not only the fastest video converter but also offers many other handy features.
Convert videos and audio files to 500+ formats.
Download movies and songs from 1,000+ websites.
Edit and compress audio/video files with ease.
Screen record from PC with audio included.
Convert video segments or images to GIFs.
Support batch mode and hardware acceleration.
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WonderFox DVD Ripper Pro
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* Please DO NOT use it to rip any copy-protected DVDs for commercial purposes.
