[linux-dvb] Re: loosing data with Freeze command

[Johannes Stezenbach <js@convergence.de>]

On Thu, Jan 09, 2003 at 11:47:47AM +0100, Marlec Olivier wrote:
> Hi,
> I am using a DVB-S board version 2.1 with DVB driver version 0.9.4. I don't
> get data flow by PCI bus (so I'm not using the host DRAM) but directly by
> the common interface connector. When I call the driver DVB Freeze command
> then the Continue command, I lose about 1 second of video on display.
> Do you know why, and how to avoid this ?

I haven't looked into the details, but the VIDEO_FREEZE ioctl
stops the MPEG decoder, and the AV7110 firmware may have to
do some work to reestablish proper audio/video sync for
VIDEO_CONTINUE. Maybe that's the reason for the TS feed interruption.

OTOH, I thought that the TS stream on the common interface
comes directly from the frontend, so it should not be affected
by VIDEO_FREEZE/CONTINUE.

Anyway, I don't know how to work around this.


Regards,
Johannes


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