[mythtv-users] MythTV problems with 3.7.x and 3.8.x kernel

Michael T. Dean mtdean at thirdcontact.com
Tue Mar 5 02:52:52 UTC 2013


On 02/26/2013 10:58 AM, Richard wrote:
> On 26/02/13 16:32, Neil Salstrom wrote:
>> Hmm...  You may be right on that....  I know .iso files use the
>> myth:// path but now I'm wondering about physical DVDs.  If a physical
>> DVD is mounted on a backend (even if it's remote) will it play on
>> remote frontends via storage group?  If so then the loopback device
>> issue may make sense.
>
> I don't think a remote frontend can access a physical drive on a 
> backend, certainly not without some weird voodoo that isn't going to 
> happen by accident.  By that, I mean when you select 'Play a DVD or 
> Blu-ray' from the menu.  You could presumably point a storage group on 
> a backend to a mounted DVD but it would appear along with other 
> videos/images rather than playing directly from the menu.
>
>> I've emailed the kernel patch developer and he's asked me to test a
>> few things.  He's leaning towards this being an issue with MythTV as
>> opposed the mtu size for the loopback.
>
> In his position, I would probably say the same thing :)  I don't mean 
> that he's trying to get out of anything, just that it doesn't seem to 
> make much sense.  Particularly that it apparently *only* affects 
> playback of DVDs, even physical DVDs on the local machine.

Pretty sure MythTV's use of optical devices is done directly with 
libdvdnav, so try out other projects that use dvdnav.  I think we're 
using the mplayer "fork" (resurrection?) of libdvdnav.  If you have the 
problem there, then contact the libdvdnav folks.

Mike


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