[mythtv-users] Problem playing ISO files in 0.24 storage group

John Finlay finlay at moeraki.com
Wed Feb 16 17:57:01 UTC 2011


On 2/16/11 9:30 AM, Scott Colbeck wrote:
> On Mon, Dec 20, 2010 at 11:41 AM, Scott Colbeck<scolbeck at gmail.com>  wrote:
>> On Sat, Dec 18, 2010 at 10:00 PM, John Finlay<finlay at moeraki.com>  wrote:
>>> On 12/18/10 9:15 PM, Nick Rout wrote:
>>>> On Sun, Dec 19, 2010 at 6:11 PM, John Finlay<finlay at moeraki.com>    wrote:
>>>>> using:
>>>>>
>>>>> MythTV Version   : c81a3d7
>>>>> MythTV Branch    : fixes/0.24
>>>>> Network Protocol : 63
>>>>> Library API      : 0.24.20101129-1
>>>>> QT Version       : 4.7.0
>>>>> Options compiled in:I just tried playing
>>>>>   linux debug using_alsa using_jack using_oss using_pulse
>>>>> using_pulseoutput
>>>>> using_backend using_bindings_perl using_bindings_python using_dvb
>>>>> using_firewire using_frontend using_hdhomerun using_hdpvr using_iptv
>>>>> using_ivtv using_joystick_menu using_lirc using_mheg using_opengl_video
>>>>> using_opengl_vsync using_qtdbus using_qtwebkit using_v4l using_x11
>>>>> using_xrandr using_xv using_bindings_perl using_bindings_python
>>>>> using_mythtranscode using_opengl using_vdpau using_ffmpeg_threads
>>>>> using_live
>>>>> using_mheg
>>>>>
>>>>> I have been trying to play ISO files from a storage group but have had no
>>>>> success. The log files show:
>>>>>
>>>>> 2010-12-18 20:30:52.489 VDP: SetVideoRenderer(xv-blit)
>>>>> 2010-12-18 20:30:52.489 VDP: SetVideoRender(xv-blit) ==
>>>>> GetVideoRenderer()
>>>>> 2010-12-18 20:30:52.490 VideoOutputXv: Chromakeying not possible with
>>>>> this
>>>>> XVideo port.
>>>>> 2010-12-18 20:30:52.490 Snapping height to avoid scaling: height: 1080,
>>>>> top:
>>>>> 0
>>>>> 2010-12-18 20:30:52.490 Display Rect  left: 240, top: 0, width: 1440,
>>>>> height: 1080, aspect:
>>>>>   1.77778
>>>>> 2010-12-18 20:30:52.490 Video Rect    left: 0, top: 0, width: 1920,
>>>>> height:
>>>>> 1080, aspect: 1
>>>>> .33333
>>>>> 2010-12-18 20:30:52.493 Over/underscan. V: 0.02, H: 0.01
>>>>> 2010-12-18 20:30:52.493 Display Rect  left: 240, top: 0, width: 1440,
>>>>> height: 1080, aspect: 1.77778
>>>>> 2010-12-18 20:30:52.493 Video Rect    left: 19, top: 22, width: 1882,
>>>>> height: 1037, aspect: 1.33333
>>>>> 2010-12-18 20:30:52.493 Player(0): LoadFilters(''..) ->    0x0
>>>>> 2010-12-18 20:30:52.496 Player(0): Decoder thread starting.
>>>>> 2010-12-18 20:30:52.496 OSD: Base theme size: 1280x720
>>>>> 2010-12-18 20:30:52.497 OSD: Scaling factors: 1.47031x1.44167
>>>>> 2010-12-18 20:30:52.497 [mp1 @ 0x7fa4d9f7b5e0]Header missing
>>>>> 2010-12-18 20:30:52.497 AFD Error: Unknown audio decoding error
>>>>> 2010-12-18 20:30:52.497 [mp1 @ 0x7fa4d9f7b5e0]Header missing
>>>>> 2010-12-18 20:30:52.497 AFD Error: Unknown audio decoding error
>>>>> 2010-12-18 20:30:52.497 [mp1 @ 0x7fa4d9f7b5e0]Header missing
>>>>> 2010-12-18 20:30:52.497 AFD Error: Unknown audio decoding error
>>>>> 2010-12-18 20:30:52.497 [mp1 @ 0x7fa4d9f7b5e0]Header missing
>>>>> ...
>>>>>
>>>>> It looks like the player is using the wrong codec and eventually
>>>>> crashing.
>>>>> The same ISO plays just fine from an NFS mount.
>>>>>
>>>>> Any suggestions on how to fix this?
>>>>>
>>>>> Thanks
>>>>>
>>>> is the iso encrypted? if so, it will not work in a storage group.
>>> The ISO is not encrypted.
>>>
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>>>
>> I just tried this today with my 0.24 Mythbuntu install and have the
>> same problem.  All unencrypted ISOs from the storage group crash the
>> frontend.  They play fine from a NFS mount.
>>
>> Scott
>>
> Today I found out this problem exists with ISOs created with DVD
> Shrink.  I pulled out my DVD discs and created a couple new ISO images
> with another program and they play fine in a storage group.
> Interesting MythTV has no problem playing the same DVD Shrink created
> ISOs outside of a storage group.
>
> I currently have Ubuntu bug 715548 open for this problem.  Will this
> eventually create a problem against MythTV?  Or should I create a new
> ticket against MythTV?
>
> Scott
I opened a ticket #9475 on this problem though it is marked with trivial 
Priority and low Severity so may not get much attention. I have also 
discovered that the problem is with ISOs created by DVDShrink but not 
necessarily limited to DVDShrink. Furthermore the VOBs in the ISO 
created by DVDShrink are identical to the VOBs in an ISO made by another 
program that works. Only the IFO info is different. I think that the 
problem is the corrupted structure info that is added to some dvds these 
days as part of the copy protection but that doesn't explain why most of 
the DVDs play in MythTV when not using storage groups.

An additional problem I've encountered is MythTV plays the wrong audio 
track (of two) in some ISOs and the right audio track can't be selected. 
It appears to be a problem when both audio tracks are 5.1 (in my 
situation). It also seems to be a problem whether the ISO is played from 
SGs or off an NFS mount.

In both cases VLC will play the ISOs correctly.

John


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