[mythtv-users] DVD iso won't show menus

Michael T. Dean mtdean at thirdcontact.com
Thu Sep 6 13:17:31 UTC 2012

On 09/06/2012 09:12 AM, Michael T. Dean wrote:
> (fixed top posting)
> On 09/05/2012 10:39 PM, Michael Herman wrote:
>>>> On Wed, Sep 5, 2012 at 3:33 PM, Michael T. Dean wrote:
>>>>> (And remember that other DVD playback software does try to 
>>>>> incorporate workarounds for protected discs--so just because it 
>>>>> works in<insert DVD player name>, doesn't mean that it's not the 
>>>>> structural protection or that it's a compliant disc.)
>> Why would mplayer and VLC beable to play the iso file while mythtv's
>> player can't?
> As above.
>>    I was under the impression that ddrescue is able to overcome
>> the errors on the disc.
> No. ddrescue simply copies whatever it's able to copy off the disc and 
> leaves garbage/holes where it couldn't read.  If the holes extend 
> beyond the specific bytes where they existed on the disc (due to how 
> your drive actually attempts to read the broken sectors and when it 
> returns errors), it may actually make an even-more-broken rip.

And, really, the best place to discuss the issue is some forum for some 
dedicated DVD-ripping software, rather than here.

The only thing of importance when it comes to MythTV is that MythTV has 
no code to try to work around broken/non-compliant discs or any kinds of 
copy protection, including structure protection.  So, whatever you do, 
you'll need to get a good video without any of the garbage or MythTV 
probably won't be able to play it properly.


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