[PROPOSAL] Unable to extract subtitles from DVB video samples when build using cmake by passing -DWITH_FFMPEG=ON flag

[krushanbauva]

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

CCExtractor version (using the --version parameter preferably) : X.X

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

• [x ] I have read and understood the contributors guide.
• [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 and in opened 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):

• [ ] I have never used CCExtractor.
• [ ] I have used CCExtractor just a couple of times.
• [ ] I absolutely love CCExtractor, but have not contributed previously.
• [x ] I am an active contributor to CCExtractor.

Necessary information

• Is this a regression (did it work before)? [x ] NO | [ ] YES - please specify the last known working version
• What platform did you use? [ ] Windows - [x ] Linux - [ ] Mac
• What were the used arguments? -autoprogram

**Video links (replace text below with your links) ** https://drive.google.com/open?id=0B_61ywKPmI0TdTdSTi1iN251WHM

Additional information

Unable to extract subtitles from DVB video samples.

This occurs if I build ccextractor using cmake by passing the -DWITH_FFMPEG=ON flag Exact build steps :

If I build without the -DWITH_FFMPEG=ON flag, ccextractor is able to extract the subtitles

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.

[cfsmp3]

Those are FFmpeg's errors apparently, not sure it's something for us to fix, but I'm assigning it to @anshul1912 since he did that bit.

[cfsmp3]

Name of file: 2016-12-15-BBC4.ts (leaving in a comment so it's findable)

I don't get those errors but I also don't get any output (no captions found). There's captions for sure (VLC plays them) so this is still a valid bug

✦ ❯ ./build -debug -hardsubx && ./ccextractor ~/Downloads/2016-12-15-BBC4.ts
Running pre-build script...
Obtaining Git commit
Storing variables in file
Commit: 9b2215d9c2ed48cff1cd9f1fa73af6e1bc88621f
Date: 2023-03-22
Stored all in compile_info_real.h
Done.
Trying to compile...
Checking for cargo...
rustc >= MSRV(1.54.0)
Building rust files...
    Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Building ccextractor
../src/lib_ccx/telxcc.c: In function 'telxcc_dump_prev_page':
../src/lib_ccx/telxcc.c:519:28: warning: '%.3u' directive output may be truncated writing between 3 and 5 bytes into a region of size 4 [-Wformat-truncation=]
  519 |         snprintf(info, 4, "%.3u", bcd_page_to_int(tlt_config.page));
      |                            ^~~~
../src/lib_ccx/telxcc.c:519:27: note: directive argument in the range [0, 65535]
  519 |         snprintf(info, 4, "%.3u", bcd_page_to_int(tlt_config.page));
      |                           ^~~~~~
../src/lib_ccx/telxcc.c:519:9: note: 'snprintf' output between 4 and 6 bytes into a destination of size 4
  519 |         snprintf(info, 4, "%.3u", bcd_page_to_int(tlt_config.page));
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../src/lib_ccx/matroska.c:3:
../src/lib_ccx/matroska.c: In function 'generate_timestamp_ass_ssa':
../src/lib_ccx/matroska.h:23:13: warning: '%02ld' directive writing 2 bytes into a region of size between 1 and 13 [-Wformat-overflow=]
   23 | #define LLD "%ld"
      |             ^~~~~
../src/lib_ccx/matroska.c:256:22: note: in expansion of macro 'LLD'
  256 |         sprintf(buf, LLD ":%02" LLD_M ":%02" LLD_M ".%02" LLD_M, hours, minutes, seconds, millis);
      |                      ^~~
../src/lib_ccx/matroska.c:256:28: note: format string is defined here
  256 |         sprintf(buf, LLD ":%02" LLD_M ":%02" LLD_M ".%02" LLD_M, hours, minutes, seconds, millis);
../src/lib_ccx/matroska.h:23:13: note: directive argument in the range [0, 59]
   23 | #define LLD "%ld"
      |             ^~~~~
../src/lib_ccx/matroska.c:256:22: note: in expansion of macro 'LLD'
  256 |         sprintf(buf, LLD ":%02" LLD_M ":%02" LLD_M ".%02" LLD_M, hours, minutes, seconds, millis);
      |                      ^~~
../src/lib_ccx/matroska.h:23:13: note: directive argument in the range [0, 59]
   23 | #define LLD "%ld"
      |             ^~~~~
../src/lib_ccx/matroska.c:256:22: note: in expansion of macro 'LLD'
  256 |         sprintf(buf, LLD ":%02" LLD_M ":%02" LLD_M ".%02" LLD_M, hours, minutes, seconds, millis);
      |                      ^~~
../src/lib_ccx/matroska.h:23:13: note: directive argument in the range [0, 99]
   23 | #define LLD "%ld"
      |             ^~~~~
../src/lib_ccx/matroska.c:256:22: note: in expansion of macro 'LLD'
  256 |         sprintf(buf, LLD ":%02" LLD_M ":%02" LLD_M ".%02" LLD_M, hours, minutes, seconds, millis);
      |                      ^~~
../src/lib_ccx/matroska.c:256:9: note: 'sprintf' output between 11 and 23 bytes into a destination of size 15
  256 |         sprintf(buf, LLD ":%02" LLD_M ":%02" LLD_M ".%02" LLD_M, hours, minutes, seconds, millis);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../src/lib_ccx/matroska.c: In function 'save_sub_track':
../src/lib_ccx/matroska.c:1199:42: warning: '%d' directive writing between 1 and 10 bytes into a region of size 9 [-Wformat-overflow=]
 1199 |                         sprintf(number, "%d", i + 1);
      |                                          ^~
../src/lib_ccx/matroska.c:1199:41: note: directive argument in the range [1, 2147483647]
 1199 |                         sprintf(number, "%d", i + 1);
      |                                         ^~~~
../src/lib_ccx/matroska.c:1199:25: note: 'sprintf' output between 2 and 11 bytes into a destination of size 9
 1199 |                         sprintf(number, "%d", i + 1);
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
../src/lib_ccx/utility.c: In function 'change_filename':
../src/lib_ccx/utility.c:457:50: warning: '%d' directive writing between 1 and 10 bytes into a region of size 5 [-Wformat-overflow=]
  457 |                         sprintf(new_extension, ".%d", iter);
      |                                                  ^~
../src/lib_ccx/utility.c:457:48: note: directive argument in the range [1, 2147483647]
  457 |                         sprintf(new_extension, ".%d", iter);
      |                                                ^~~~~
../src/lib_ccx/utility.c:457:25: note: 'sprintf' output between 3 and 12 bytes into a destination of size 6
  457 |                         sprintf(new_extension, ".%d", iter);
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../src/lib_ccx/ts_tables_epg.c: In function 'EPG_DVB_calc_start_time':
../src/lib_ccx/ts_tables_epg.c:85:57: warning: '%02ld' directive writing between 2 and 20 bytes into a region of size between 1 and 19 [-Wformat-overflow=]
   85 |                 sprintf(event->start_time_string, "%02ld%02ld%02ld%06" PRIu64 "+0000", y, m, d, time & 0xffffff);
      |                                                         ^~~~~
../src/lib_ccx/ts_tables_epg.c:85:51: note: directive argument in the range [-9223372036854775808, 9223372036854775806]
   85 |                 sprintf(event->start_time_string, "%02ld%02ld%02ld%06" PRIu64 "+0000", y, m, d, time & 0xffffff);
      |                                                   ^~~~~~~~~~~~~~~~~~~~
../src/lib_ccx/ts_tables_epg.c:85:51: note: using the range [-9223372036854775808, 9223372036854775807] for directive argument
../src/lib_ccx/ts_tables_epg.c:85:51: note: directive argument in the range [0, 16777215]
../src/lib_ccx/ts_tables_epg.c:85:17: note: 'sprintf' output between 18 and 74 bytes into a destination of size 21
   85 |                 sprintf(event->start_time_string, "%02ld%02ld%02ld%06" PRIu64 "+0000", y, m, d, time & 0xffffff);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../src/lib_ccx/ts_tables_epg.c: In function 'EPG_DVB_calc_end_time':
../src/lib_ccx/ts_tables_epg.c:116:54: warning: '%02d' directive writing between 2 and 11 bytes into a region of size between 10 and 19 [-Wformat-overflow=]
  116 |                 sprintf(event->end_time_string, "%02d%02d%02d%02d%02d%02d +0000", timeinfo.tm_year + 1900, timeinfo.tm_mon + 1, timeinfo.tm_mday, timeinfo.tm_hour, timeinfo.tm_min, timeinfo.tm_sec);
      |                                                      ^~~~
../src/lib_ccx/ts_tables_epg.c:116:49: note: directive argument in the range [-2147483647, 2147483647]
  116 |                 sprintf(event->end_time_string, "%02d%02d%02d%02d%02d%02d +0000", timeinfo.tm_year + 1900, timeinfo.tm_mon + 1, timeinfo.tm_mday, timeinfo.tm_hour, timeinfo.tm_min, timeinfo.tm_sec);
      |                                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../src/lib_ccx/ts_tables_epg.c:116:17: note: 'sprintf' output between 19 and 73 bytes into a destination of size 21
  116 |                 sprintf(event->end_time_string, "%02d%02d%02d%02d%02d%02d +0000", timeinfo.tm_year + 1900, timeinfo.tm_mon + 1, timeinfo.tm_mday, timeinfo.tm_hour, timeinfo.tm_min, timeinfo.tm_sec);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Compilation successful, compiler message shown in previous lines
CCExtractor 0.94, Carlos Fernandez Sanz, Volker Quetschke.
Teletext portions taken from Petr Kutalek's telxcc
--------------------------------------------------------------------------
Input: /home/cfsmp3/Downloads/2016-12-15-BBC4.ts
[Extract: 1] [Stream mode: Autodetect]
[Program : Auto ] [Hauppage mode: No] [Use MythTV code: Auto]
[CEA-708: 63 decoders active]
[CEA-708: using charset "none" for all services]
[Timing mode: Auto] [Debug: No] [Buffer input: No]
[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