[mythtv-users] Myth 0.24 and Blu-ray

[Robert McNamara]

On Thu, Oct 21, 2010 at 3:39 PM, Tom Flair <tom at graniteskies.net> wrote:
> One of my favorite additions to 0.24 is blu-ray playback.  I have a fan edit
> of a certain trilogy that was released as  blu-ray format as well as a
> handful of unencrypted discs that I've purchased that now play back
> perfectly using the internal player.
>
> Now that there is some support for pressed discs
> (http://www.mythtv.org/wiki/High_Definition_Disk_Formats), I wrote a quick
> and dirty script to provide the necessary information to the KEYDB.cfg and
> initiate the mythavtest program.   What I've noticed with playing back an
> encrypted disk versus an MKV dump of the same disc is a lot of stuttering
> and skipping.  As I currently only have one BD-ROM drive, I don't know if
> this is a problem with the my drive not reading the data fast enough or a
> side effect of decrypting and playing back the disc at the same time.
>
> So, my question is this:  Is there a performance penalty for decrypting and
> playing back a pressed disc on the fly or is there a defect with my drive or
> settings inside Myth that I've overlooked?

There is certainly a performance penalty for decrypting, but none that
has ever caused stuttering or issues for me.  There are no settings in
Myth relating to Blu-ray playback.  Could be a disc mastering issue,
could be a drive issue, could be a system issue.

Robert