[BUG] CCExtractor crashes with error "Error: Broken AVC stream - forbidden_zero_bit not zero" #585

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claunia · 2026-01-29T16:48:29Z

claunia commented

2026-01-29 16:48:29 +00:00

Originally created by @MaximVol on GitHub (May 5, 2020).

CCExtractor version: 0.87

I have read and understood the contributors guide.
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.

Necessary information

Is this a regression (i.e. did it work before)? NO
What platform did you use? Window and Linux
What were the used arguments? ccextractorwin.exe cctest.ts

Video links

http://exchange.grabien.com/cctest.ts

(The file is big enough, 2.5 GB.)

Additional information

CCExtractor crashes with "Error: Broken AVC stream - forbidden_zero_bit not zero" error message. The full log is below:

CCExtractor 0.87, Carlos Fernandez Sanz, Volker Quetschke.
Teletext portions taken from Petr Kutalek's telxcc
Input: cctest.ts
[Extract: 1] [Stream mode: Autodetect]
[Program : Auto ] [Hauppage mode: No] [Use MythTV code: Auto]
[Timing mode: Auto] [Debug: No] [Buffer input: Yes]
[Use pic_order_cnt_lsb for H.264: No] [Print CC decoder traces: No]
[Target format: .srt] [Encoding: UTF-8] [Delay: 0] [Trim lines: No]
[Add font color data: Yes] [Add font typesetting: Yes]
[Convert case: No] [Video-edit join: No]
[Extraction start time: not set (from start)]
[Extraction end time: not set (to end)]
[Live stream: No] [Clock frequency: 90000]
[Teletext page: Autodetect]
[Start credits text: None]
[Quantisation-mode: CCExtractor's internal function]
Opening file: cctest.ts
File seems to be a transport stream, enabling TS mode
Analyzing data in general mode
Found large gap(86) in PTS! Trying to recover ...
0% | 00:00
Found large gap(94) in PTS! Trying to recover ...
Found large gap(88) in PTS! Trying to recover ...
Found large gap(90) in PTS! Trying to recover ...
Found large gap(92) in PTS! Trying to recover ...
42% | 25:0500000000 | 00 00 00 01 E1 E0 76 F1 A4 00 | срvёд
Error: Broken AVC stream - forbidden_zero_bit not zero ...
Issues? Open a ticket here
https://github.com/CCExtractor/ccextractor/issues

Originally created by @MaximVol on GitHub (May 5, 2020). CCExtractor version: 0.87 - [X] I have read and understood the [contributors guide](https://github.com/CCExtractor/ccextractor/blob/master/.github/CONTRIBUTING.md). - [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. # Necessary information - Is this a regression (i.e. did it work before)? NO - What platform did you use? Window and Linux - What were the used arguments? `ccextractorwin.exe cctest.ts` # Video links http://exchange.grabien.com/cctest.ts (The file is big enough, 2.5 GB.) # Additional information CCExtractor crashes with "Error: Broken AVC stream - forbidden_zero_bit not zero" error message. The full log is below: CCExtractor 0.87, Carlos Fernandez Sanz, Volker Quetschke. Teletext portions taken from Petr Kutalek's telxcc Input: cctest.ts [Extract: 1] [Stream mode: Autodetect] [Program : Auto ] [Hauppage mode: No] [Use MythTV code: Auto] [Timing mode: Auto] [Debug: No] [Buffer input: Yes] [Use pic_order_cnt_lsb for H.264: No] [Print CC decoder traces: No] [Target format: .srt] [Encoding: UTF-8] [Delay: 0] [Trim lines: No] [Add font color data: Yes] [Add font typesetting: Yes] [Convert case: No] [Video-edit join: No] [Extraction start time: not set (from start)] [Extraction end time: not set (to end)] [Live stream: No] [Clock frequency: 90000] [Teletext page: Autodetect] [Start credits text: None] [Quantisation-mode: CCExtractor's internal function] Opening file: cctest.ts File seems to be a transport stream, enabling TS mode Analyzing data in general mode Found large gap(86) in PTS! Trying to recover ... 0% | 00:00 Found large gap(94) in PTS! Trying to recover ... Found large gap(88) in PTS! Trying to recover ... Found large gap(90) in PTS! Trying to recover ... Found large gap(92) in PTS! Trying to recover ... 42% | 25:0500000000 | 00 00 00 01 E1 E0 76 F1 A4 00 | срvёд Error: Broken AVC stream - forbidden_zero_bit not zero ... Issues? Open a ticket here https://github.com/CCExtractor/ccextractor/issues

claunia referenced this issue

2026-01-29 17:16:21 +00:00

[PR #585] [MERGED] Fixed crash regarding memory leak. #1422

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Reference: starred/ccextractor#585