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

Bill Williamson bill at bbqninja.com
Tue Feb 17 02:18:59 UTC 2009

On Tue, Feb 17, 2009 at 12:41 PM, George Mari <george_mythusers at mari1938.org
> wrote:

> 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?
>>  [deleted]
> 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.
TV series dvds (specifically scrubs PAL dvds) have lots of menu nav
problems.  Screens don't refresh/etc.  I think a lot of it is dvds that have
either "structure protection" or "stillframes."  I know not what either of
those mean, but can guess based on context clues.
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