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DVB-subtitle-track not discovered #87

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opened 2026-01-29 16:34:50 +00:00 by claunia · 7 comments
claunia commented 2026-01-29 16:34:50 +00:00
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Originally created by @hurda on GitHub (Nov 18, 2015).

CCExtractor 0.77 and git-677fee4
File: http://www.mediafire.com/download/lzruvndz9mzoxul/dvb_not_found.7z (26MB)

The dvb-stream isn't detected, while extracting the teletext-subtitles works.
With 0.77 the program produces an empty SRT-file.

C:\Users\User\Videos\cce>ccextractorwin.exe  --gui_mode_reports  -autoprogram -o
ut=srt -bom -debug -goppts -vides -parsePAT -parsePMT -deblev -utf8 -noteletext 
"dvb not found.ts"
###VERSION#CCExtractor#0.77
CCExtractor 0.77, Carlos Fernandez Sanz, Volker Quetschke.
Teletext portions taken from Petr Kutalek's telxcc
--------------------------------------------------------------------------
Input: dvb not found.ts
[Extract: 1] [Stream mode: Autodetect]
[Program : 0 ] [Hauppage mode: No] [Use MythTV code: Auto]

[Timing mode: Auto] [Debug: Yes] [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]
Creating dvb not found.srt

-----------------------------------------------------------------
Opening file: dvb not found.ts
###INPUTFILEOPEN#dvb not found.ts
File seems to be a transport stream, enabling TS mode
Analyzing data in general mode
Read PAT packet (id: 0) ts-id: 0x0002
  section length: 13  number: 0  last: 0
  version_number: 0  current_next_indicator: 1

Program association section (PAT)
  Program number: 2001  -> PMTPID: 2000

Program Map Table for program 2001, PMT PID: 2000
  2001 |   2 (  2) | MPEG-2 video
  2011 |   3 (  3) | MPEG-1 audio
  2101 |   6 (  6) | MPEG-2 private data
  2071 |   6 (  6) | MPEG-2 private data

---

Program map section (PMT)
  MPEG-2 video stream [0x02]  -  PID: 2001
  MPEG-1 audio stream [0x03]  -  PID: 2011
  MPEG-2 private data stream [0x06]  -  PID: 2101
  MPEG-2 private data stream [0x06]  -  PID: 2071

First sync time    PTS: 21:57:37:818 +0ms (time before this PTS)
Total_frames_count 0 frames_since_ref_time 0
Packet (pid 2071) skipped - no payload.
Packet (pid 2071) skipped - no payload.
TS payload start video PES id: 189  len: 2279
Set PTS: 21:57:41:752 (2820590394)
PES header length: 14 (14 verified)  Data length: 2265
Read PES-DVB subtitle (databuffer 2265/PES data 2265)  - complete
###PROGRESS#6#0#3
Packet (pid 2071) skipped - no payload.
Packet (pid 2071) skipped - no payload.
Packet (pid 2071) skipped - no payload.
TS payload start video PES id: 189  len: 5067
Set PTS: 21:57:43:392 (2820737994)
PES header length: 14 (14 verified)  Data length: 5053
Read PES-DVB subtitle (databuffer 5053/PES data 5053)  - complete
###PROGRESS#10#0#5


[etc. etc. etc.]


Number of NAL_type_7: 0
Number of VCL_HRD: 0
Number of NAL HRD: 0
Number of jump-in-frames: 0
Number of num_unexpected_sei_length: 0

Total frames time:        00:00:00:000  (0 frames at 29.97fps)

Min PTS:                                21:57:37:818
Max PTS:                                21:58:34:152
Length:                          00:00:56:334
Done, processing time = 2 seconds
Performance (real length/process time) = 28.18
This is beta software. Report issues to carlos at ccextractor org...

But with the compiled git-version, the program crashes at the OCR-stage:

\src\lib_ccx\ocr.c
Line: 134

Run-Time Check Failure #3 - The variable 'end_y' is being used without being initialized.
Originally created by @hurda on GitHub (Nov 18, 2015). CCExtractor 0.77 and git-677fee4 File: http://www.mediafire.com/download/lzruvndz9mzoxul/dvb_not_found.7z (26MB) The dvb-stream isn't detected, while extracting the teletext-subtitles works. With 0.77 the program produces an empty SRT-file. ``` C:\Users\User\Videos\cce>ccextractorwin.exe --gui_mode_reports -autoprogram -o ut=srt -bom -debug -goppts -vides -parsePAT -parsePMT -deblev -utf8 -noteletext "dvb not found.ts" ###VERSION#CCExtractor#0.77 CCExtractor 0.77, Carlos Fernandez Sanz, Volker Quetschke. Teletext portions taken from Petr Kutalek's telxcc -------------------------------------------------------------------------- Input: dvb not found.ts [Extract: 1] [Stream mode: Autodetect] [Program : 0 ] [Hauppage mode: No] [Use MythTV code: Auto] [Timing mode: Auto] [Debug: Yes] [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] Creating dvb not found.srt ----------------------------------------------------------------- Opening file: dvb not found.ts ###INPUTFILEOPEN#dvb not found.ts File seems to be a transport stream, enabling TS mode Analyzing data in general mode Read PAT packet (id: 0) ts-id: 0x0002 section length: 13 number: 0 last: 0 version_number: 0 current_next_indicator: 1 Program association section (PAT) Program number: 2001 -> PMTPID: 2000 Program Map Table for program 2001, PMT PID: 2000 2001 | 2 ( 2) | MPEG-2 video 2011 | 3 ( 3) | MPEG-1 audio 2101 | 6 ( 6) | MPEG-2 private data 2071 | 6 ( 6) | MPEG-2 private data --- Program map section (PMT) MPEG-2 video stream [0x02] - PID: 2001 MPEG-1 audio stream [0x03] - PID: 2011 MPEG-2 private data stream [0x06] - PID: 2101 MPEG-2 private data stream [0x06] - PID: 2071 First sync time PTS: 21:57:37:818 +0ms (time before this PTS) Total_frames_count 0 frames_since_ref_time 0 Packet (pid 2071) skipped - no payload. Packet (pid 2071) skipped - no payload. TS payload start video PES id: 189 len: 2279 Set PTS: 21:57:41:752 (2820590394) PES header length: 14 (14 verified) Data length: 2265 Read PES-DVB subtitle (databuffer 2265/PES data 2265) - complete ###PROGRESS#6#0#3 Packet (pid 2071) skipped - no payload. Packet (pid 2071) skipped - no payload. Packet (pid 2071) skipped - no payload. TS payload start video PES id: 189 len: 5067 Set PTS: 21:57:43:392 (2820737994) PES header length: 14 (14 verified) Data length: 5053 Read PES-DVB subtitle (databuffer 5053/PES data 5053) - complete ###PROGRESS#10#0#5 [etc. etc. etc.] Number of NAL_type_7: 0 Number of VCL_HRD: 0 Number of NAL HRD: 0 Number of jump-in-frames: 0 Number of num_unexpected_sei_length: 0 Total frames time: 00:00:00:000 (0 frames at 29.97fps) Min PTS: 21:57:37:818 Max PTS: 21:58:34:152 Length: 00:00:56:334 Done, processing time = 2 seconds Performance (real length/process time) = 28.18 This is beta software. Report issues to carlos at ccextractor org... ``` But with the compiled git-version, the program crashes at the OCR-stage: ``` \src\lib_ccx\ocr.c Line: 134 Run-Time Check Failure #3 - The variable 'end_y' is being used without being initialized. ```
claunia commented 2026-01-29 16:34:51 +00:00
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@cfsmp3 commented on GitHub (Aug 8, 2016):

Just tested - the crash with OCR is still there today. Assigned to Abhinav95 since he's doing DVB work these days.

Abhinav95 I can reproduce by doing this:

-codec dvbsub -stdout -srt "C:\DeletableTempStuff\dvb not found.ts"

0.82 to be released once this is fixed.

@cfsmp3 commented on GitHub (Aug 8, 2016): Just tested - the crash with OCR is still there today. Assigned to Abhinav95 since he's doing DVB work these days. Abhinav95 I can reproduce by doing this: -codec dvbsub -stdout -srt "C:\DeletableTempStuff\dvb not found.ts" 0.82 to be released once this is fixed.
claunia commented 2026-01-29 16:34:51 +00:00
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@ghost commented on GitHub (Nov 28, 2016):

Resolved as of 0.82

@ghost commented on GitHub (Nov 28, 2016): Resolved as of 0.82
claunia commented 2026-01-29 16:34:51 +00:00
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@cfsmp3 commented on GitHub (Nov 28, 2016):

Can you send complete console output and also attach the resulting output
file to the ticket?

On Mon, Nov 28, 2016 at 3:53 PM, Alex Huang notifications@github.com
wrote:

Resolved as of 0.82

—
You are receiving this because you commented.
Reply to this email directly, view it on GitHub
https://github.com/CCExtractor/ccextractor/issues/247#issuecomment-263433054,
or mute the thread
https://github.com/notifications/unsubscribe-auth/AFrJ2ao91oRzcWAQNlBmpcck6vSdAax8ks5rC2llgaJpZM4GlEPl
.

@cfsmp3 commented on GitHub (Nov 28, 2016): Can you send complete console output and also attach the resulting output file to the ticket? On Mon, Nov 28, 2016 at 3:53 PM, Alex Huang <notifications@github.com> wrote: > Resolved as of 0.82 > > — > You are receiving this because you commented. > Reply to this email directly, view it on GitHub > <https://github.com/CCExtractor/ccextractor/issues/247#issuecomment-263433054>, > or mute the thread > <https://github.com/notifications/unsubscribe-auth/AFrJ2ao91oRzcWAQNlBmpcck6vSdAax8ks5rC2llgaJpZM4GlEPl> > . >
claunia commented 2026-01-29 16:34:52 +00:00
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@ghost commented on GitHub (Nov 29, 2016):

----------
Opening file: dvb not found.ts
File seems to be a transport stream, enabling TS mode
Analyzing data in general mode
VBI/teletext stream ID 2101 (0x835) for SID 2001 (0x7d1)
DVB subtitles detected, OCR subsystem not present. Use -out=spupng for graphic output
Creating dvb not found.srt
  0%  |  00:00- Programme Identification Data = ARD - Das Erste.
- Universal Time Co-ordinated = Thu Nov 05 03:48:52 2015
Notice: Teletext page with possible subtitles detected: 150
- No teletext page specified, first received suitable page is 150, not guaranteed
100%  |  00:55
Teletext decoder: 1390 packets processed

Number of NAL_type_7: 0
Number of VCL_HRD: 0
Number of NAL HRD: 0
Number of jump-in-frames: 0
Number of num_unexpected_sei_length: 0
Done, processing time = 0 seconds
This is beta software. Report issues to carlos at ccextractor org...

dvb not found.zip - contains the output .srt file

@ghost commented on GitHub (Nov 29, 2016): ``` ---------- Opening file: dvb not found.ts File seems to be a transport stream, enabling TS mode Analyzing data in general mode VBI/teletext stream ID 2101 (0x835) for SID 2001 (0x7d1) DVB subtitles detected, OCR subsystem not present. Use -out=spupng for graphic output Creating dvb not found.srt 0% | 00:00- Programme Identification Data = ARD - Das Erste. - Universal Time Co-ordinated = Thu Nov 05 03:48:52 2015 Notice: Teletext page with possible subtitles detected: 150 - No teletext page specified, first received suitable page is 150, not guaranteed 100% | 00:55 Teletext decoder: 1390 packets processed Number of NAL_type_7: 0 Number of VCL_HRD: 0 Number of NAL HRD: 0 Number of jump-in-frames: 0 Number of num_unexpected_sei_length: 0 Done, processing time = 0 seconds This is beta software. Report issues to carlos at ccextractor org... ``` [dvb not found.zip](https://github.com/CCExtractor/ccextractor/files/617788/dvb.not.found.zip) - contains the output .srt file
claunia commented 2026-01-29 16:34:52 +00:00
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@hurda commented on GitHub (Jan 25, 2017):

Doesn't work for me in 0.85:
C:\Temp\downloads\ccextractor.0.85-windows.binaries\ccextractorwinfull.exe --gui_mode_reports -autoprogram -out=srt -bom -latin1 -codec dvbsub [+input files]

CCExtractor 0.85, Carlos Fernandez Sanz, Volker Quetschke.
Teletext portions taken from Petr Kutalek's telxcc
--------------------------------------------------------------------------
Input: C:\Users\hurda\Videos\dvb not found.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: Latin-1] [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]


-----------------------------------------------------------------

Opening file: C:\Users\hurda\Videos\dvb not found.ts

File seems to be a transport stream, enabling TS mode

Analyzing data in general mode
Creating C:\Users\hurda\Videos\dvb not found.srt
dvbsub_decode: incomplete, broken or empty packet

Number of NAL_type_7: 0
Number of VCL_HRD: 0
Number of NAL HRD: 0
Number of jump-in-frames: 0
Number of num_unexpected_sei_length: 0

Min PTS:				21:57:37:818
Max PTS:				21:58:34:152
Length:				 00:00:56:334

Done, processing time = 2 seconds
Issues? Open a ticket here
https://github.com/CCExtractor/ccextractor/issues
No captions were found in input.

Plus the log of @grave-w-grave shows it was extracting the Teletext-subtitles, not the DVB-subtitles, which weren't an issue.

@hurda commented on GitHub (Jan 25, 2017): Doesn't work for me in 0.85: `C:\Temp\downloads\ccextractor.0.85-windows.binaries\ccextractorwinfull.exe --gui_mode_reports -autoprogram -out=srt -bom -latin1 -codec dvbsub [+input files]` ``` CCExtractor 0.85, Carlos Fernandez Sanz, Volker Quetschke. Teletext portions taken from Petr Kutalek's telxcc -------------------------------------------------------------------------- Input: C:\Users\hurda\Videos\dvb not found.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: Latin-1] [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] ----------------------------------------------------------------- Opening file: C:\Users\hurda\Videos\dvb not found.ts File seems to be a transport stream, enabling TS mode Analyzing data in general mode Creating C:\Users\hurda\Videos\dvb not found.srt dvbsub_decode: incomplete, broken or empty packet Number of NAL_type_7: 0 Number of VCL_HRD: 0 Number of NAL HRD: 0 Number of jump-in-frames: 0 Number of num_unexpected_sei_length: 0 Min PTS: 21:57:37:818 Max PTS: 21:58:34:152 Length: 00:00:56:334 Done, processing time = 2 seconds Issues? Open a ticket here https://github.com/CCExtractor/ccextractor/issues No captions were found in input. ``` Plus the log of @grave-w-grave shows it was extracting the Teletext-subtitles, not the DVB-subtitles, which weren't an issue.
claunia commented 2026-01-29 16:34:52 +00:00
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@cfsmp3 commented on GitHub (Jan 26, 2017):

Confirmed - it still crashes. I looked into it and the first crash is caused due to uninitialized variables.

Trivial "fix":

BOX* ignore_alpha_at_edge(png_byte *alpha, unsigned char* indata, int w, int h, PIX *in, PIX **out)
{
-	int i, j, index, start_y, end_y;
+	int i, j, index, start_y=0, end_y=0;

But we don't get much further than that - eventually tesseract returns an 0 which we don't really handle well (we write "something messy" and go on with our day) and then another crash.

@Abhinav95 can you check this out?

@cfsmp3 commented on GitHub (Jan 26, 2017): Confirmed - it still crashes. I looked into it and the first crash is caused due to uninitialized variables. Trivial "fix": ``` BOX* ignore_alpha_at_edge(png_byte *alpha, unsigned char* indata, int w, int h, PIX *in, PIX **out) { - int i, j, index, start_y, end_y; + int i, j, index, start_y=0, end_y=0; ``` But we don't get much further than that - eventually tesseract returns an 0 which we don't really handle well (we write "something messy" and go on with our day) and then another crash. @Abhinav95 can you check this out?
claunia commented 2026-01-29 16:34:53 +00:00
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@ghost commented on GitHub (Dec 25, 2017):

Tesseract thingy fixed, but this still crashes at PTS: 21:57:43:392 (2820737994) FTS: 00:00:05:280 due to access violation, trying to read from a pointer to 0 at some point

e: Now that's odd, tried running it in debug-full using the same settings and it runs to completion with "No captions were found in input."

Step 1 figure out why it crashes in release but not dbg?

@ghost commented on GitHub (Dec 25, 2017): Tesseract thingy fixed, but this still crashes at PTS: 21:57:43:392 (2820737994) FTS: 00:00:05:280 due to access violation, trying to read from a pointer to 0 at some point e: Now that's odd, tried running it in debug-full using the same settings and it runs to completion with "No captions were found in input." Step 1 figure out why it crashes in release but not dbg?
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