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[QUESTION]How to get Teletext pages with possible subtitles without actual extraction #460
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Originally created by @workflowsguy on GitHub (Nov 1, 2018).
CCExtractor version (using the --version parameter preferably) : 0.87
In raising this issue, I confirm the following:
My familiarity with the project is as follows:
Necessary information
-out=reportAdditional information
When running
ccextractoragainst a video file, I get an output e.g. like this:I would like to get this information without
ccextractorautomatically extracting the subtitles because I need to specify the actual page to extract from based on service name and desired language.I thought the option
-out=reportwould achieve this, but for the same video file I get the outputIs this a bug/limitation in the
reportparameter or is there a different way to achieve this?@navimakarov commented on GitHub (Dec 14, 2018):
@workflowsguy you can easily extract captions to console only with -stdout parameter.
Note that ccextractor will ignore -o, -o1 and -o2 in this case.
So the most simple way to use this parameter is:
input_file -stdoutYou can read more about this option(and other ccextractor available parameters) here:
https://ccextractor.org/public:general:command_line_usage
@workflowsguy commented on GitHub (Dec 18, 2018):
@MakarovGCI2018 sorry, but I do not understand how your answer relates to my question.
Using
-stdoutstill causesccextractorto parse the video file completely which is not what I want.@navimakarov commented on GitHub (Dec 18, 2018):
@workflowsguy sorry for misunderstanding. So you just want to get info about teletext pages with possible subtitles without actual processing it using -out=report, right?
@workflowsguy commented on GitHub (Feb 19, 2019):
@navimakarov, sorry for the long delay in replying.
Yes, I need some way to get information if the video file contains teletext pages with possible subtitles without actually starting the extraction process.
@neilmehta31 commented on GitHub (Jan 6, 2021):
Hey guys, I am new to open source. I would like to work on this issue if it is still open. Please guide me how to get started and work on this issue.
@cfsmp3 commented on GitHub (Jan 9, 2021):
@neilmehta31 By all means go ahead.
Usually you want to start by reproducing it.
@neilmehta31 commented on GitHub (Jan 10, 2021):
Hey @cfsmp3 , I got the following output while running against one of the sample recording files given on the website
If its the wrong file could you please provide a link to that file to reproduce the issue. Thanks
@siv2r commented on GitHub (Jan 28, 2021):
@workflowsguy can you provide the video sample used? I am unable to reproduce this.
I ran
ccextractor path_to_filefor the video file (provided in ccextractor's tv samples page) containing teletex subtitles. I got the following results.There is no information like
Notice: Teletext page with possible subtitles detected: 152@85ayush commented on GitHub (Feb 23, 2021):
I would love to work on this issue, I am a beginner, can you please guide me.
@vaishnavi192 commented on GitHub (Nov 15, 2023):
Hey I want to work on this issue @workflowsguy. please tell how to get started I am a beginner
@workflowsguy commented on GitHub (Nov 17, 2023):
@vaishnavi192, I am the wrong person to ask for guidance. I asked this question here 5 years ago and it has not been answered/adressed to my satisfaction since then. I have long since moved on.
@aakarshgopishetty commented on GitHub (Mar 10, 2025):
Hi, I would like to work on this issue as a beginner-friendly task.
I will try to implement a fix and submit a PR soon.
Please let me know if there are any specific requirements or suggestions.
Thanks!
@Maku38 commented on GitHub (Jun 27, 2025):
Hey , I’m new to CCExtractor and interested in contributing. I came across this issue about the -out=report option not listing detected Teletext subtitle pages. I’d love to try fixing this as my first task. Could someone guide me where I should start looking in the codebase for this feature? Thanks in advance!
I’ve gone through the contributors guide and built the project locally, just need help navigating the relevant files
@SinghBappi commented on GitHub (Jul 13, 2025):
Hi! I'm Bappi Singh, a student from India and GSoC 2026 aspirant. I'm new to open source and I’d love to take this up as my first contribution. Can I work on this issue?
@cfsmp3 commented on GitHub (Jul 17, 2025):
Yes
@aman225 commented on GitHub (Nov 16, 2025):
Hey @cfsmp3 , I would like to work on this issue if it is still open. Please guide me how can i reproduce it.
@cfsmp3 commented on GitHub (Nov 16, 2025):
No idea, I didn't open this issue... @workflowsguy would be the right person to ask
@Rahul-2k4 commented on GitHub (Dec 5, 2025):
Hi @workflowsguy , I would like to work on this.
I have analyzed the issue and reproduced it. The cause is in general_loop.c: Teletext packet processing is currently skipped entirely when the encoder context (enc_ctx) is null, which is the case when running with -out=report.
I have a fix that relaxes this condition to allow processing when print_file_reports is enabled. This will correctly populate the existing seen_sub_page array and allow the final report to list the detected pages. I will submit a PR shortly.
@Rahul-2k4 commented on GitHub (Dec 10, 2025):
Hi @cfsmp3 , all tests are passing on the CI dashboard, but the CCExtractor CI bot hasn’t reflected the updated status on this PR. Is there a step I should take to trigger the bot again, or should I wait for it to sync?
Let me know how I can help move this forward.