[linux-dvb] Re: automatic AD cutting [was "Timing recording"]

[Emil Naepflein <Emil.Naepflein@philosys.de>]

On Fri, 13 Dec 2002 13:48:39 +0100, Alexandre CONRAD
<aconrad.tlv@magic.fr> wrote:

> Do you get the idea ? And if you have any ideas, your suggestions are open.

The problem is that you probably will not get always exact the same
frame content. There is a lot that can go wrong from retrieving it from
a tape at the sender till it is placed on the disk. There may all the
following steps be involved:
- reading from analog or digital maz
- transmitting it via analog sat to digital feed
- doing realtime encoding with dynamic bandwith allocation
- forward error correction during decode 

Just one bit that is different doesn't allow an exact comparison. You
would need very sophisticated image recognition to make sure that this
works.

Emil 


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