Timing issues from teletext with bogus PTS (regressed in 0.85) #285

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claunia · 2026-01-29T16:39:54Z

claunia commented

2026-01-29 16:39:54 +00:00

Originally created by @hurda on GitHub (Feb 22, 2017).

Originally assigned to: @alexbrt on GitHub.

Between 0.84 and 0.85 something changed regarding processing teletext which has dodgy PTS-values and creating the subtitle-timestamps.

Sample: http://www.mediafire.com/file/j4ej0akioqyklxv/teletext_timing_wrong_pts_cce0.85.zip

0.84 (good):

1
00:00:02,040 --> 00:00:04,480
Oh, ich dachte, Sie wären schon weg.

2
00:00:04,560 --> 00:00:06,360
<font color="#ffff00">Und ich gehe jetzt auch.</font>

3
00:00:10,720 --> 00:00:11,880
Hey, Jackie.

4
00:00:11,960 --> 00:00:12,960
Ich ... ich habe was für dich.

0.85 (bad):

1
07:09:30,010 --> 07:09:32,449
Oh, ich dachte, Sie wären schon weg.

2
07:09:32,530 --> 07:09:34,329
<font color="#ffff00">Und ich gehe jetzt auch.</font>

3
07:09:38,690 --> 07:09:39,849
Hey, Jackie.

4
07:09:39,930 --> 07:09:40,929
Ich ... ich habe was für dich.

The difference of the timestamps of 0.85 compared to 0.84 can be between some seconds and several hours.

Originally created by @hurda on GitHub (Feb 22, 2017). Originally assigned to: @alexbrt on GitHub. Between 0.84 and 0.85 something changed regarding processing teletext which has dodgy PTS-values and creating the subtitle-timestamps. Sample: http://www.mediafire.com/file/j4ej0akioqyklxv/teletext_timing_wrong_pts_cce0.85.zip 0.84 (good): ``` 1 00:00:02,040 --> 00:00:04,480 Oh, ich dachte, Sie wären schon weg. 2 00:00:04,560 --> 00:00:06,360 <font color="#ffff00">Und ich gehe jetzt auch.</font> 3 00:00:10,720 --> 00:00:11,880 Hey, Jackie. 4 00:00:11,960 --> 00:00:12,960 Ich ... ich habe was für dich. ``` 0.85 (bad): ``` 1 07:09:30,010 --> 07:09:32,449 Oh, ich dachte, Sie wären schon weg. 2 07:09:32,530 --> 07:09:34,329 <font color="#ffff00">Und ich gehe jetzt auch.</font> 3 07:09:38,690 --> 07:09:39,849 Hey, Jackie. 4 07:09:39,930 --> 07:09:40,929 Ich ... ich habe was für dich. ``` The difference of the timestamps of 0.85 compared to 0.84 can be between some seconds and several hours.

claunia closed this issue

2026-01-29 16:39:55 +00:00

claunia commented

2026-01-29 16:39:55 +00:00

@cfsmp3 commented on GitHub (Feb 22, 2017):

I think @AlexBratosin2001 did some work on the teletext timing.

@cfsmp3 commented on GitHub (Feb 22, 2017): I think @AlexBratosin2001 did some work on the teletext timing.

claunia commented

2026-01-29 16:39:56 +00:00

@hurda commented on GitHub (Feb 25, 2017):

Thanks, fixed.

@hurda commented on GitHub (Feb 25, 2017): Thanks, fixed.