[mythtv-users] Poor quality/performance on mytharchive compared to DVDstyler

[Paul Harrison]

Robin Gilks wrote:
>> I reset those and will try this again (realizing that 720x480 will give me
>> larger file sizes without appreciable improvement in visuals). But my
>> original
>> question still stands: what is DVDstyler doing with 480x480 MPEG2s quickly
>> and
>> cleanly that Mytharchive is doing ineptly?
>>
>> If DVDstyler is a frontend to the same set of command-line linux DVD
>> mastering
>> utilities that Mytharchive is using, why is DVDstyler capable of handling
>> this
>> task quickly and correctly and MythArchive is not?
>>
>> Hm?
>>     
>
> If you take a look at the mythburn.py script you will find a function that
> will help you decide what resolution to record at to remain DVD compliant
> when burning.
>
> This function is: isResolutionOkayForDVD
>
> Use your favourite editor to have a look at that and the magic numbers in
> it (its only 4 lines, you can't miss it) will give you all the clues
> you'll need.
>
> As for DVDstyler, I guess it produces non-compliant DVDs...
>
> And remember, its the bit rate that determines the filesize, not the
> resolution. I recommend the info at:
>    http://www.mediachance.com/dvdlab/tutorial/bitrate.html
>
>   

The list of valid resolutions is also on the wiki page :-
http://www.mythtv.org/wiki/index.php/MythArchive#FAQ

Paul H.