[BUG] 608/708 captions not being converted to webvtt #678

New Issue

claunia · 2026-01-29T16:50:44Z

claunia commented

2026-01-29 16:50:44 +00:00

Originally created by @shaunflagg on GitHub (Jan 24, 2022).

CCExtractor version: 0.94

In raising this issue, I confirm the following:

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.
I have ticked all the boxes in this section and to prove it I'm deleting the section completely to remove boilerplate text.

Necessary information

Is this a regression (i.e. did it work before)? YES
What platform did you use? Linux and Mac
What were the used arguments? ccextractor file.mp4 -out-webvtt

Video links

N/A

Additional information

I have some video files with 608/708 embedded captions and have been using ccxtractor to generate webvtt captions files. This has been successful with version 0.88 for some time. I recently installed version 0.94 and get this error

[CEA-708] dtvcc_handle_G0: Window has to be defined first
[CEA-708] dtvcc_handle_CWx_SetCurrentWindow: window [0] is not defined
Segmentation fault

Originally created by @shaunflagg on GitHub (Jan 24, 2022). CCExtractor version: 0.94 # In raising this issue, I confirm the following: - [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. - [x] I have ticked all the boxes in this section and to prove it I'm deleting the section completely to remove boilerplate text. # Necessary information - Is this a regression (i.e. did it work before)? YES - What platform did you use? Linux and Mac - What were the used arguments? `ccextractor file.mp4 -out-webvtt` # Video links N/A # Additional information I have some video files with 608/708 embedded captions and have been using ccxtractor to generate webvtt captions files. This has been successful with version 0.88 for some time. I recently installed version 0.94 and get this error ``` [CEA-708] dtvcc_handle_G0: Window has to be defined first [CEA-708] dtvcc_handle_CWx_SetCurrentWindow: window [0] is not defined Segmentation fault ```

claunia closed this issue

2026-01-29 16:50:44 +00:00

claunia commented

2026-01-29 16:50:45 +00:00

@PunitLodha commented on GitHub (Jan 25, 2022):

Please share the videos for which you get this error. You can upload them, and share the link here

@PunitLodha commented on GitHub (Jan 25, 2022): Please share the videos for which you get this error. You can upload them, and share the link here

claunia commented

2026-01-29 16:50:45 +00:00

@shaunflagg commented on GitHub (Feb 8, 2022):

@PunitLodha you can see the mp4 and vtt files here https://drive.google.com/drive/folders/12GflmtA6M6aTIH1VEQ4TVOYVO05CpMd6?usp=sharing

@shaunflagg commented on GitHub (Feb 8, 2022): @PunitLodha you can see the mp4 and vtt files here https://drive.google.com/drive/folders/12GflmtA6M6aTIH1VEQ4TVOYVO05CpMd6?usp=sharing

claunia commented

2026-01-29 16:50:45 +00:00

@PunitLodha commented on GitHub (Feb 9, 2022):

I am able to extract correct vtt captions for this file on 0.94. Could you please share the full output of ccextractor --version and also tell where have you installed ccextractor from?

@PunitLodha commented on GitHub (Feb 9, 2022): I am able to extract correct vtt captions for this file on 0.94. Could you please share the full output of `ccextractor --version` and also tell where have you installed ccextractor from?

claunia commented

2026-01-29 16:50:46 +00:00

@cfsmp3 commented on GitHub (Mar 22, 2023):

Closing because I can't reproduce. I did fix an unrelated issue (small memory leak) with this sample though.

@shaunflagg feel free to reopen if you can reproduce with current master.

@cfsmp3 commented on GitHub (Mar 22, 2023): Closing because I can't reproduce. I did fix an unrelated issue (small memory leak) with this sample though. @shaunflagg feel free to reopen if you can reproduce with current master.

claunia referenced this issue

2026-01-29 17:16:59 +00:00

[PR #706] added deb .tgz packages #1532

claunia referenced this issue

2026-01-29 17:17:03 +00:00

[PR #715] [CLOSED] [IMPROVEMENT] Add Autoconf scripts to make CCExtractor more linux standard compliant #1541

claunia referenced this issue

2026-01-29 17:17:04 +00:00

[PR #715] [IMPROVEMENT] Add Autoconf scripts to make CCExtractor more linux standard compliant #1543

claunia referenced this issue

2026-01-29 17:17:06 +00:00

[PR #716] [CLOSED] [IMPROVEMENT]GSoC qualification: Make CCExtractor more linux standard compliant #678 #1544