[BUG] Segmentation fault on VOB #527

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claunia · 2026-01-29T16:46:32Z

claunia commented

2026-01-29 16:46:32 +00:00

Originally created by @boog on GitHub (Nov 28, 2019).

Please prefix your issue with one of the following: [BUG], [PROPOSAL], [QUESTION].

CCExtractor version (using the --version parameter preferably) :
CCExtractor 0.88, Carlos Fernandez Sanz, Volker Quetschke.
Teletext portions taken from Petr Kutalek's telxcc

CCExtractor detailed version info
Version: 0.88
Git commit: 280b4308f7
Compilation date: 2019-11-27
File SHA256: eec95999b58c1a22f7a0909844d58df1e6456ae87d6c34afd782ae3ab2173c6b
Libraries used by CCExtractor
libGPAC Version: 0.7.2-DEV
zlib: 1.2.11
utf8proc Version: 2.2.0
protobuf-c Version: 1.3.1
libpng Version: 1.6.35
FreeType
libhash
nuklear
libzvbi

In raising this issue, I confirm the following (please check boxes, eg [X] - and delete unchecked ones):

I have checked that the bug-fix I am reporting can be replicated, or that the feature I am suggesting isn't already present.
I have checked that the issue I'm posting isn't already reported.
I have checked that the issue I'm porting isn't already solved and no duplicates exist in closed issues and in opened issues
I have checked the pull requests tab for existing solutions/implementations to my issue/suggestion.
I have used the latest available version of CCExtractor to verify this issue exists.

My familiarity with the project is as follows (check one, eg [X] - and delete unchecked ones):

I have used CCExtractor just a couple of times.

Necessary information

Is this a regression (did it work before)?
NO
What platform did you use?
Linux
Mac
What were the used arguments? -debug -o test.srt

Video links (replace text below with your links)
http://ccextractor.s3-website-us-east-1.amazonaws.com/example.vob

Additional information
Ripped and decrypted from DVD with Region code 2. Sub titles are image based dvd_subtitle.

Tried to export in srt and spupng both segfault part way through. Was able to successfully extract some pngs with spupng. Debug flag doesn't output very much helpful information.

On linux:

Unknown command in control sequence!
w:1 h:-79
Segmentation fault

On Mac:

search_start_code: bitsleft <= 0
read_pic_data: reached end of bitstream.
PACK header
Subtitle found Stream id:29
PES data read: 912
!strcmp(locale, "C"):Error:Assert failed:in file baseapi.cpp, line 209
Illegal instruction: 4

PS: Make sure you set an alert in GitHub so you get notifications about your ticket. We may need to ask questions and we do everything inside GitHub's system.

Originally created by @boog on GitHub (Nov 28, 2019). Please prefix your issue with one of the following: [BUG], [PROPOSAL], [QUESTION]. CCExtractor version (using the --version parameter preferably) : CCExtractor 0.88, Carlos Fernandez Sanz, Volker Quetschke. Teletext portions taken from Petr Kutalek's telxcc -------------------------------------------------------------------------- CCExtractor detailed version info Version: 0.88 Git commit: 280b4308f7f7ff769fd9c3fe2b03a7259644bfdb Compilation date: 2019-11-27 File SHA256: eec95999b58c1a22f7a0909844d58df1e6456ae87d6c34afd782ae3ab2173c6b Libraries used by CCExtractor libGPAC Version: 0.7.2-DEV zlib: 1.2.11 utf8proc Version: 2.2.0 protobuf-c Version: 1.3.1 libpng Version: 1.6.35 FreeType libhash nuklear libzvbi **In raising this issue, I confirm the following (please check boxes, eg [X] - and delete unchecked ones):** - [x] I have checked that the bug-fix I am reporting can be replicated, or that the feature I am suggesting isn't already present. - [x] I have checked that the issue I'm posting isn't already reported. - [x] I have checked that the issue I'm porting isn't already solved and no duplicates exist in [closed issues](https://github.com/CCExtractor/ccextractor/issues?q=is%3Aissue+is%3Aclosed) and in [opened issues](https://github.com/CCExtractor/ccextractor/issues) - [x] I have checked the pull requests tab for existing solutions/implementations to my issue/suggestion. - [x] I have used the latest available version of CCExtractor to verify this issue exists. **My familiarity with the project is as follows (check one, eg [X] - and delete unchecked ones):** - [x] I have used CCExtractor just a couple of times. **Necessary information** - Is this a regression (did it work before)? - [x] NO - What platform did you use? - [x] Linux - [x] Mac - What were the used arguments? `-debug -o test.srt` **Video links (replace text below with your links)** http://ccextractor.s3-website-us-east-1.amazonaws.com/example.vob **Additional information** Ripped and decrypted from DVD with Region code 2. Sub titles are image based dvd_subtitle. Tried to export in srt and spupng both segfault part way through. Was able to successfully extract some pngs with spupng. Debug flag doesn't output very much helpful information. On linux: ``` Unknown command in control sequence! w:1 h:-79 Segmentation fault ``` On Mac: ``` search_start_code: bitsleft <= 0 read_pic_data: reached end of bitstream. PACK header Subtitle found Stream id:29 PES data read: 912 !strcmp(locale, "C"):Error:Assert failed:in file baseapi.cpp, line 209 Illegal instruction: 4 ``` PS: Make sure you set an alert in GitHub so you get notifications about your ticket. We may need to ask questions and we do everything inside GitHub's system.

claunia added the GCI19 label 2026-01-29 16:46:32 +00:00

claunia referenced this issue

2026-01-29 17:15:56 +00:00

[PR #527] return a non-zero return code if no subtitles were found #1351

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Reference: starred/ccextractor#527