I have two computers, one with Full featured DVB-C the other with a Budget DVB-C. I ran the same software on both computers, on the same channel and the same time of course.
The software prints the video PTS on the console. The results are below:
FF DVB-C: video pts = 5581899604 video pts = 5581942804 video pts = 5581986004 video pts = 5588682004 [...]
BUDGET DVB-C video pts = 7682452818 video pts = 7682496018 video pts = 7682539218 video pts = 7682582418 [...]
The BUDGET results correspond to the subtitles PTS (I'm trying to sync subtitles).
On FF DVB-C video pts << subtitle pts, so the synchronization does not work. I'm using STC for syncing but it's about the same as the video pts.
What's going on here? Why are the pts / stc altered on a full featured card? Does the card itself modify the pts values or the driver? Can I somehow modify the subtitle pts' to match the stc?
And to make things more complicated, this doesn't happen always. I haven't figured out the circumstances that cause this.
Any help is appreciated...
Thanks,
--pekka
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