[linux-dvb] Re: Driver doesn't replay recordings from RTL

[Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>]

Marcus Metzler wrote:
> 
> Klaus Schmidinger writes:
>  > Oliver Endriss wrote:
>  > >
>  > > Klaus Schmidinger wrote:
>  > > > Since yesterday (maybe even earlier) the driver (CVS version
>  > > > 2002-12-08) doesn't replay (new) recordings from RTL any more. It
>  > > > behaves just as if it had been set into "pause" mode.
>  > >
>  > > Maybe this is the same bug I wrote about in the thread
>  > > "Hard time reading MPEG2s + Sat lock with Hauppage WinTV Nexus DVB-s":
>  > > | Some recordings done with vdr 1.0.4 won't replay cleanly. I started
>  > > | looking into this and found that the problem disappeared when I
>  > > | replaced the firmware (Root, Dpram) of the new driver with that of the
>  > > | 1.0.4 driver.
>  > >
>  > > Could you try the old firmware with the new driver?
>  >
>  > Ok, looks like the problem is in the firmware.
>  > I tried the firmware from 2002-06-23 with driver 2002-12-08 and VDR 1.1.20
>  > and it replayed new RTL recordings just fine.
>  >
>  > Further tests showed that the problem was introduced between 2002-09-18 and
>  > 2002-09-19, which is apparently the date when the firmware switched from
>  >
>  >  254324 Apr 15  2002 Root
>  >
>  > to
>  >
>  >  254444 Aug 30 12:50 Root
>  >
>  > Since I have been using this new firmware for quite a while and it always
>  > worked fine with recordings from RTL I still assume that RTL must have
>  > changed something in their data format that triggers a bug in the new firmware.
>  >
>  > So, once again, we're at a point where we have to hope that one of the
>  > driver developers will find the time to fix this in the firmware...
>  >
> 
> Are you sure it's the playback, not the recording process? Did you try
> playing with mplayer? It works with rtuxplayer and our current
> firmware, which should not be different from the CVS firmware, of
> course the driver is much different now.

Andreas Böttger wrote to me yesterday about this and he told me that
mplayer _is_ able to replay new recordings from RTL. Also, as I stated
above, the old firmware together with the new driver and VDR is also
able to replay them. So my guess would be that the problem _is_ in the
replay process. Whether the actual bug is in the driver or the firmware
is, maybe, hard to tell, but from what I've traced through the driver
so far it seems like at some point the firmware simply doesn't accept any
more data. I've also dumped the MPEG data from a new RTL recording and compared
it to an old recording, but there's nothing in there that would indicate
any obvious problem (although, of course, the problem may be in a single
bit of data, which is easy to miss when just looking at the dump...).

> We were going to post it on our website, but Ralph has hurt his arm
> and can't type right now, and he wanted to fix some more things before
> posting it.

Sorry to hear that - I hope he'll be better soon.

Klaus
-- 
_______________________________________________________________

Klaus Schmidinger                       Phone: +49-8635-6989-10
CadSoft Computer GmbH                   Fax:   +49-8635-6989-40
Hofmark 2                               Email:   kls@cadsoft.de
D-84568 Pleiskirchen, Germany           URL:     www.cadsoft.de
_______________________________________________________________


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