[mythtv-users] [Fwd: Mythvideo plays .iso poorly]

[paul10 at planar.id.au]

I'm running trunk, and I've started ripping my DVDs for playback in Myth -
the new 0.22 UI looks to provide a really nice way of navigating the
covers.  Also, I bought an Nvidia 8400GS the other day, and shifted to
using VDPAU.  My frontend is a Celeron mobile 1.5GHz, so prior to the
VDPAU move, I pretty much didn't have enough horsepower to play back
ripped DVDs.

I've chosen to rip all the DVDs as .ISO - it seemed to me I might damage
the originals some day and want to burn them again.  However, I'm getting
some playback problems with mythvideo and the internal player.  I prefer
the internal player because the key bindings are the same as core myth.  I
haven't spent a huge amount of time diagnosing this, but I'm interested in
whether:
 - mythvideo and .iso just isn't a good idea right now
 - these are problems that are specific to trunk - so I should just wait
for them to get fixed sometime before 0.22 releases
 - I've found some new and unique errors (maybe I'm the only person using
.isos), and I should spend some time diagnosing them and logging defects.
 - I should shift to an external player instead - maybe iso playback isn't
high priority for the devs right now?

The types of errors I am getting:
 - on a Keith Jarrett DVD, it runs through to the title screen, but if I
select "play movie" it gives sync errors and plays nothing.  If I pick
one of the first few tracks, that plays fine, but somewhere in the middle
of the disc, it stops playing again.  This DVD plays fine in my hardware
DVD player, and OK in Mplayer.  My backend (without VDPAU) also has the
same issues playing it - I doubt VDPAU is the problem
 - on The Matrix, difficulty starting playing (only if I select the second
chapter from the play menu), and crashes when I use the FF (right arrow)
during playback.  Next chapter is mostly fine.

I have a bunch of errors like this - it seems like most of my .isos (I've
ripped 100 of them) don't play cleanly.  It is certainly limiting WAF of
my cunning new setup.  I'm happy to document each individual error,
although it seems like they aren't going to replicate if I try to truncate
the video down to a reasonable sized sample file - they look to be
specific to the .iso.

Any thoughts?