Forced subtitle stream crashes BDSup2Sub

[ptr727]

Hi, I noticed that when I open the forced subs only SUP stream created by MakeMKV in BDSup2Sub, that it crashes BDSup2Sub.

Process 1:
Avatar BD
MakeMKV including DTS-HD, DTS, English subs, and English forced subs.
Use EAC3TO to extract two subtitle streams to SUP files from MKV.
Open normal subs using BDSup2Sub, ok.
Open forced subs using BDSup2Sub, crash.

Process 2:
Avatar BD
MakeMKV BD copy and decrypt to folder.
Use EAC3TO to extract the English subtitle stream to SUP file.
Open SUP file using BDSup2Sub, ok.
Save SUP file and select forced subs only, ok.
Re-open forced subs, ok.

The MakeMKV subs stream is 40,221,848 bytes.
The EAC3TO subs stream is 40,221,848 bytes.
The MakeMKV forced stream is 1,851,474 bytes.
The BDSup2Sub forced stream is 1,855,634 bytes.

Notice the difference in the forced subs stream sizes.

Is this a bug in MakeMKV?

P

[Romansh]

Could also be a bug in eac3to - it's possible it doesn't extract the forced subs track from the MKV correctly.

Have you tried extracting the forced subs from the MKV with mkvextract instead?

[Bling2Ming]

I also think this may be an eac3to issue.

I own the Avatar Extended Collectors Edition Bluray, and I can confirm, that the extracted forced sub (PGS or .sup) stream from the mkv file created by Makemkv, when extracted with mkvextract, is handled without problems by BDSup2Sub.

[ptr727]

The stream extracted by eac3to and mkvextractgui are identical.

And a second user in the BDSup2Sub forum confirmed the problem:
http://forum.doom9.org/showthread.php?p=1475469