[mythtv-users] Archiving Shows to DVD

Cory Papenfuss papenfuss at juneau.me.vt.edu
Mon Aug 1 13:10:43 UTC 2005

On Mon, 1 Aug 2005, Fredrik Karlsson wrote:

> Sorry for the nag.. :-), but I urge you all to have a look at the scrips in the
> CVS for mythburn (http://sourceforge.net/projects/mythburn/).
> Screenshots of the results at
> http://mythburn.sourceforge.net/.
> Although the package is driven by MythWeb addon scripts, the scripts
> doing the work are just ordinary shell scripts. In my experience, the
> php fronend has a high WAF, but a QT frontend calling the scripts
> would be a very big bonus. Having to start up two computers to be able
> to burn a DVD feels kinda strange.
> Furthermore, if the ready-to-go scripts are used, there will perhaps
> not be a need for two types of burning... it comes from the good
> nature of code reuse, open source and not re-inventing the wheel where
> there is (as I understand it)  no need.
> /Fredrik

 	I just looked through this a bit.  I must admit I haven't tried 
it, but as far as I can tell from reading through the code, it starts out 
by demuxing/remuxing the MPEG stream.  That will break audio sync on 
arbitrary ivtv captures.

 	The reason for suggesting two types of burning is that there 
really are two separate reasons.

1 (DVD archive): Cut out commercials, possibly denoise, downsize on a 
transcode.  Make the result with menus, multiple episodes, etc and 
playable on a settop DVD player.  A very hard problem, considering that 
the backend tools are not 100% reliable with A/V sync

2 (Mythtv archive): Dump any recorded content in the database to a 
removable medium, including any database information as an .sql stub file. 
Easy to do, and allows for archival without *any* generation loss or 
manipulation of the stream at all.



* Cory Papenfuss                                                        *
* Electrical Engineering candidate Ph.D. graduate student               *
* Virginia Polytechnic Institute and State University                   *

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