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BDSup2Sub is a converter from Blu-Ray PGS SUP to DVD SUB/IDX (VobSub) or SUP(DVD SUP). You can also add a delay and/or change the time stamps to e.g. perform a PAL speedup. Requires Java runtime. SUP to SUB, SUPtoSUB, SUP to SUP, SUPtoSUP, SUB to SUP, SUB/IDX to SUP.

Free software
Version:5.1.2 / ++1.0.2
Released:Dec 28,2013
File size:665.8KB
4 votes

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BDSup2Sub screenshot
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Latest version

5.1.2 / ++1.0.2 (December 28, 2013)


Visit developer's site

Download BDSup2Sub 5.1.2  [665.8KB]  [Win]

Download Beta and other versions

Download BDSup2Sub ++1.0.2  [3.8MB]  [Win]

Download old versions

Download BDSup2Sub old versions

Supported operating systems



Free software

More information and other downloads

Requires Java runtime, just download and install it and then double click on bdsup2bup.jar to run.

Version history / Release notes / Changelog

v5.1.2 (28 December 2013)

Fixed: --scale <x, y> command line option ignored
Fixed: progress bar window remains open under certain conditions

View full changelog

All features

A tool to convert and tweak bitmap based subtitle streams
BDSup2Sub is a tool initially created to convert captions demuxed from a Blu-Ray transport stream (M2TS) into the DVD VobSub format (SUB/IDX) used by many DVD authoring tools - hence the name. Many more features were added over time as was support for other formats. So in the meantime the name seems a little inappropriate. In a nutshell, it's a subtitle conversion tool for image based stream formats with scaling capabilities and some other nice features.

Supported Formats
Blu-Ray SUP
Sony BDN XML (as used by Sonic Scenarist HDMV)
HD-DVD SUP (import only)
VobSub (SUB/IDX)

What it can do
convert any supported import format to any supported export format
add a fixed delay to all timestamps
perform a frame rate conversion e.g. for pal speedup
synchronize time stamps to output frame rate
edit times and position of each caption
control all features (except editing) from the command line
move all captions inside or outside a given area or horizontally
crop the target screen size
scale up/down with a variety of filters (from bilinear over bicubic to Lanczos3 and Mitchell)
edit "forced" flags
exclude single captions from export
erase rectangular regions of a caption
scale captions independently of screen size
automatically remove fade in/out from imported subtitle streams.
export the target palette in PGCEdit text format (RGB values 0..255)
edit the imported DVD palette when input is either VobSub or SUP/IFO
edit the frame palette and alpha values when input is either VobSub or SUP/IFO
set/clear forced flags for all captions

Sections/Browse similar tools

Alternative to BDSup2Sub


Guides and How to's

How to extract subtitles from a Blu-ray and convert to srt or sub/idx

- Read

BDSup2Sub video tutorials

View all guides with guide description here

Acronyms / Also Known As


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4 reviews, Showing 1 to 4 reviews

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Review by knzsys on Apr 27, 2018 Version: ++1.0.2 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

Great utility to check for Forced Subtitles. If they exist, Forced Subs can be separated/saved to a file, then recombined with a video file using Ripbot. BTW: I use HdBr Stream Extractor to pull the subs off the original video file.

Review by SidestickMaster on Jun 6, 2013 Version: 5.1.1 OS: Windows 7 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

this app is great for when you forget to load the subtitles in ripbot264. before deleting the job from the queue, you can load the already extracted .sups and convert them to idx, and then use mkvmerge to add them in. it saves a lot of time.

Review by ianroyal on Sep 5, 2010 Version: 4.0.0 OS: Vista 64-bit Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

Excellent Tool. Easy to use. puts out subs in 1080p that vobsub understands. Never had sync issues. Only minor issue is some of the sub-lines give a error in mkvmerge. But it still takes them and just leaves out the errouous sub. If you are the author reading this: keep up the good work this is the only sup to vobsub tool i have found that i enjoy using and actually works!!!!

Review by dannyboy48888 on Mar 14, 2009 Version: 1.9 OS: Vista 64-bit Ease of use: 10/10 Functionality: 9/10 Value for money: 10/10 Overall: 10/10

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