[mythtv-users] recording ruined by placeholder

[John Pilkington]

Richard Morton wrote:
> Hi,
> 
> I have just had my first recording ruined by a placeholder on DVB-T UK 
> Freeview using a Nova-T500 on Mythbunutu 9.04 (fully patched).
> 
> What happened was the recording was scheduled and it was the first 
> programme to be shown on the channel (BBC-Three). When BBC3 is off air 
> it has a placeholder / marker explaining when it will be on air etc,
> 
> When the programme started the placeholder did not go away and in fact 
> it has a message saying if you ocntinue to see the message to tune into 
> another channel and return to BBC3...
> 
> This ruined a recording which I then missed the repeats cause I didn't 
> watch it until al the repeats had passed.
> 
> I was wondering if there is anyway to resolve this as it must be 
> affecting many users. I never had this problem with my Humax PVR (I know 
> not exactly apples and apples)
> 
> thanks for your help
> R
> 

When I have a recording that starts before the channel is fully active I 
can usually use dd to recover it.
------------
cd <recordings_directory>
mv foo.mpg foo.mpg0

dd bs=1M skip=50  count=40 if=foo.mpg0  of=foo.mpg

View the recording.  If it's ok omit the 'count'; if not try a different 
value for 'skip'.

Rebuild the seektable.  The simplest way is probably just to transcode 
the recording.

rm foo.mpg0

cd
----------

hth

John P