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28th June 2013, 16:55 | #1261 | Link |
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Suggestion: BDSup2Sub should have an option to use hqx for subtitle scaling. I've done a test run scaling DVD subtitles to HD resolution using hqx and the results are fantastic, much better than any of the current scaling options in BDSup2Sub. This sort of scaling doesn't work well for photos and such, but it seems ideal for scaling DVD subtitles with their limited resolution and color palette. It may also work decently for HD subtitles, but I don't think there would be much benefit and it may cause a posterization effect because of the wider color palette. The big downside is that it is slow.
Basically, I used hqx to scale my DVD subtitle to 3x its normal resolution, then I used a more general-purpose scaling algorithm (Lanczos) to scale/stretch it back down to the exact right dimensions for HD. I then did a contrast boost to get back the sharpness/whiter whites/blacker blacks. I'm not sure how well it might work with other color combinations than black/white, but I think it would probably work quite well. I believe there is a sample implementation in both Java and C. |
30th June 2013, 13:16 | #1262 | Link | |
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Quote:
Fixed: Flashing subtitles - if the end time of the current subtitle picture is beyond the start time of the next one the subtitle was set to zero length. Fixed: Incorrect (too short) subtitle duration for dvd subtitle frames using subtitle effects |
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30th June 2013, 13:47 | #1263 | Link |
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I am trying to collect information about the jittery subtitle issue but this thread is very long so if someone could recap what the actual problem is, how to reproduce it and if there is any workaround for it that would speed things up.
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30th June 2013, 13:52 | #1264 | Link | |
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30th June 2013, 18:31 | #1265 | Link |
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I have seen the same issue in a Pansonic DVD player, also considered fairly good. It seems to be from the player not output since the jitter will appear on 4x3 CRT TVs via svid cables or as upscaled progressive scan HD via HDMI.
Just opening and saving subtitles with BDSup2Sub without any changes will produce this. It is definitely to do with the autocropping that occurs. |
9th August 2013, 12:47 | #1266 | Link |
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Yes, that's causing it.
I've been telling this often: for DVD better don't use cropped subtitles. It's not going to save much bits anyway because the bitmaps (on DVD) are RLE compressed, so any unused space hardly eats any bits. Anyway, you can prevent BDSup2Sub from cropping the subpics by launching it via commandline (or create a BAT for convenience), adding "/acrop:0". Last edited by TheSkiller; 9th August 2013 at 12:52. |
10th August 2013, 18:09 | #1267 | Link | |
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19th August 2013, 17:35 | #1268 | Link | |
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7th September 2013, 20:27 | #1269 | Link |
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is some rare cases (russian, spanish bd's) i encounter some weird subs that after standart processing within bdsup2sub are losing their transparency (even that within bdsup2sub or supread they still look ok)
here's how it looks like http://gyazo.com/43a96dec65f19f8db5eadfe75c52f70e and here are a few lines from problematic subs before bdsup2sub, they still can be muxed fine if they won't get processed through bdsup2sub https://dl.dropboxusercontent.com/u/372935/test.sup does anybody know any way around this problem? thanks tried with ++ - same effect Last edited by kukushka; 7th September 2013 at 21:02. |
8th December 2013, 21:32 | #1273 | Link | |
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Quote:
The latest version is over at his new thread: http://forum.doom9.org/showthread.php?t=167051
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9th December 2013, 07:17 | #1274 | Link |
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22nd December 2013, 08:18 | #1276 | Link |
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I have problem with this sup file in BDSup2Sub 5.1.1
the BDSup2Sub 5.1.1 only load 2084 lines but the total of lines is 2088. BDSup2Sub++ 1.0.2 load all the 2088 lines without problem, but BDSup2Sub 5.1.1 misse 4 lines only load 2084. Here is my sup file: http://www28.zippyshare.com/v/12124972/file.html |
25th December 2013, 15:35 | #1277 | Link |
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I'm also only slightly confused on who's doing all the versions of BDSUP2SUB. I was wondering if someone could shed some light on how to identify forced subs on BDs.
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26th December 2013, 09:12 | #1279 | Link |
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BDSup2Sub was originally written by Volker Oth (0xdeadbeef) in 2009. I have been using this tool extensively, did some bugfixes for myself and I wanted to mainline them. In February 2012 I contacted Volker Oth who confirmed that he had stopped development and participation in the Doom9 thread and he did not see see much of a chance of getting back to BDSup2Sub again. With his permission I moved the codebase and documentation to GitHub and started maintaining the application. Time permitting I do some development on it but it is mainly in maintenance mode. I do monitor this forum thread and the issue tracker on GitHub.
BDSup2Sub++ is a port of the original BDSup2Sub by 0xdeadbeef to C++ and QT. I am not in contact with its developer and there is no compatibility maintained between the applications. The command line interface is different, there is difference in terms of features and possibly bugs as well. It is unfortunate that the distinction between the tools are not clear. While they share the same roots they don't have much to do with each other and it would be better to have stronger separation: separate forum threads, VideoHelp page, etc. |
26th December 2013, 14:30 | #1280 | Link | |
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Thanks for the explanation, I appreciate it mjuhasz! I think I might still have 3.9.9 or 4.0.0 but I will try your 5.1.1 now.
Quote:
Last edited by laserfan; 26th December 2013 at 14:33. |
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