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

George Mari george_mythusers at mari1938.org
Tue Feb 17 01:41:19 UTC 2009

paul10 at planar.id.au wrote:
> 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?
I am using version .21, and have about 4 different .iso files in my 
MythVideo directory, all of which are copies of commercial DVDs I own.

I am not using VDPAU, and am not having any of the problems you 
described.  Playback of Iso files, including DVD menus, is almost perfect.

One problem I'm having is while playing back these types of ISO files, I 
get occasional video stutter, acommpanied by several messages like:

NVP: Video is 3.11856 frames ahead of audio,
			doubling video frame interval to slow down.

Strange, as I can play back anything from OTA ATSC, or from my PVR-350 
with no trouble.  I'm guessing it has something to do with the slightly 
different audio format, but I'm not sure what to try to fix it next.

Anyway, other than that minor nit, everything seems to work just fine.

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