I'm working to get Mplayer to do closed captions with IVTV embedded VBI
(MPEG) input, and have encountered a problem with the PTS timestamps in the
VBI packets.  The timestamps are referenced to some arbitrary time rather
than the beginning of the program, while the timestamps in the audio and
video stream do appear to be referenced to the beginning of the program
(open time, I guess).  The VBI timescale apparently spans open/close.

What would cause that?  Where does the time come from?

I'm using IVTV 0.4.10 with PVR-250 NTSC.

Also, how important is it for the streams to have separate time
scales?  I mean, if an audio, a video, and a VBI packet come out of
the IVTV MPEG device at the same time, can I just assume they go
together?

-- 
Bryan Henderson                                   San Jose, California

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