Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion.

Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules.

 

Go Back   Doom9's Forum > General > Subtitles

Reply
 
Thread Tools Search this Thread Display Modes
Old 28th August 2015, 02:05   #1  |  Link
picrade
Registered User
 
Join Date: Apr 2008
Location: United States
Posts: 43
Make Bluray subtitle background transparent

I have a Bluray movie where subtitles are in a box with black background.
Is there a way to make the background transparent by modifying just the SUP file?
picrade is offline   Reply With Quote
Old 28th August 2015, 10:38   #2  |  Link
Ghitulescu
Registered User
 
Ghitulescu's Avatar
 
Join Date: Mar 2009
Location: Germany
Posts: 5,606
I asked this last time at least one year ago, no useful answer.

I hope you'll have a better luck.
__________________
Born in the USB (not USA)
Ghitulescu is offline   Reply With Quote
Old 29th August 2015, 00:36   #3  |  Link
picrade
Registered User
 
Join Date: Apr 2008
Location: United States
Posts: 43
I used the steps that was given in one of your links, BD to DVD to BD conversion, and it worked.
The background is now transparent but the subtitles look flat because there is no shadow or outline.
This process loses some colors because the palette is reduced from BD 256 colors to DVD 16 colors.

I am thinking of doing it "manually".
1) Export BD subtitles as 256 color PNG images and an xml file.
Is there a program to do this?
BDSupEdit can export subtitles as PNG but they are 24 bit color.
Also it exports the whole frame, 1920x1080, not just the subtitle.

2) Make the background color of the PNG image transparent in some graphic utility??

3) Make new BD SUP with the xml file and the new images.

Of course this process is not practical for doing subtitles one by one.
Perhaps it can be made into a batch process.
picrade is offline   Reply With Quote
Old 29th August 2015, 12:39   #4  |  Link
Ghitulescu
Registered User
 
Ghitulescu's Avatar
 
Join Date: Mar 2009
Location: Germany
Posts: 5,606
Quote:
Originally Posted by picrade View Post
I used the steps that was given in one of your links, BD to DVD to BD conversion, and it worked.
The background is now transparent but the subtitles look flat because there is no shadow or outline.
This process loses some colors because the palette is reduced from BD 256 colors to DVD 16 colors.
That was the problem I raised - some colours went lost. Thus the solution was not good.
__________________
Born in the USB (not USA)
Ghitulescu is offline   Reply With Quote
Old 29th August 2015, 13:42   #5  |  Link
Sm3n
Registered User
 
Join Date: Jul 2012
Posts: 94
Maybe SubtitleEdit can do it. It is able to recreate the sup I believe I did once.
Maybe you can remove background before making new one.
Sm3n is offline   Reply With Quote
Old 29th August 2015, 22:31   #6  |  Link
Ghitulescu
Registered User
 
Ghitulescu's Avatar
 
Join Date: Mar 2009
Location: Germany
Posts: 5,606
Nikse is busy now to make his program able to "read the mind" of its users in what OCR is concerned.
__________________
Born in the USB (not USA)
Ghitulescu is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 06:20.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.