Mailing List Archive: MythTV: Commits

Ticket #8517: mythvideo 0.23 cannot play the audio of a particular DVD

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mythtv at cvs

May 31, 2010, 8:10 AM

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Ticket #8517: mythvideo 0.23 cannot play the audio of a particular DVD

#8517: mythvideo 0.23 cannot play the audio of a particular DVD
-------------------------------------+--------------------------------------
Reporter: dogshu@… | Owner: skamithi
Type: defect | Status: new
Priority: minor | Milestone: 0.23-fixes
Component: MythTV - DVD Playback | Version: 0.23-fixes
Severity: medium | Mlocked: 0
-------------------------------------+--------------------------------------
mythtv 0.23-fixed svn revision 24867 is unable to play the audio of a
particular DVD that I have. It is able to play audio during the intro
menu, however there is no audio when playing any of the titles on the
disk.

I see the this error in my mythfrontend log when I try to play the DVD:

2010-05-31 10:41:01.502 [mp2 @ 0x7f69289065a0]Header missing
2010-05-31 10:41:01.502 AFD Error: Unknown audio decoding error
2010-05-31 10:41:01.597 WriteAudio: buffer underrun

I was unable to play the audio of this DVD under mythtv 0.22 either. xine
is able to play the audio on this DVD just fine.

The DVD in question is the "Commodore 64 Demo Sampler volume 3." It is
freely distributable. I've mirrored an .iso image of this DVD on a fast
internet connection here:

http://128.36.236.55/testing/demosampler3.iso

The file is 3.9 gigabytes, however it is on a fast link. Sorry I couldn't
think of another way to report this issue.

Again, mythtv is able to play audio during the intro screen, but doesn't
play any audio when playing back any of the titles.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/8517>
MythTV <http://www.mythtv.org/>
MythTV
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mythtv at cvs

Jun 6, 2010, 6:32 AM

Post #2 of 7 (382 views)
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Re: Ticket #8517: mythvideo 0.23 cannot play the audio of a particular DVD [In reply to]

mythtv at cvs

Jun 23, 2010, 5:58 PM

Post #3 of 7 (346 views)
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Re: Ticket #8517: mythvideo 0.23 cannot play the audio of a particular DVD [In reply to]

#8517: mythvideo 0.23 cannot play the audio of a particular DVD
-------------------------------------+--------------------------------------
Reporter: dogshu@… | Owner: skamithi
Type: defect | Status: new
Priority: minor | Milestone: 0.23-fixes
Component: MythTV - DVD Playback | Version: 0.23-fixes
Severity: medium | Mlocked: 0
-------------------------------------+--------------------------------------

Comment(by rconstantine1@…):

I have the same issue. Out of about 200 DVDs turned ISOs, the following
won't play sound. All were ripped with DVDFab (v5 I think). Most are only
the main movie, but a few have the menu.

The Bourne Identity
Bringing Gollum to Life
Chain Reaction
The Lion, The Witch and The Wardrobe
Clear and Present Danger
Die Another Day
Galaxy Quest
Gattaca
The Hitchhiker's Guide to the Galaxy
I, Robot
All discs from The Lord of the Rings Extended Edition
The Mask of Zorro
Minority Report
Moulin Rouge
Monty Python and the Holy Grail
Mr. & Mrs. Smith
O, Brother Where Art Thou
Pearl Harbor
Pirates of the Caribbean: Curse of the Black Pearl
The Recruit
Serenity
Spiderman 2
Stargate - Ultimate Edition
Titan A.E.
U-571
Unbreakable
X2
X-Men: The Last Stand

Like I said, I have a zillion others that work. For now, I'm using the
field (can't remember what it is named) in the DB table to use Xine on
just those movies. I'm running Mythdora 12.23 with MythTV .23-fixes.

My original install of Myth was from Mythdora 4, which I think was running
.20. I couldn't use the internal player for movies at all with that, so
I'd say this is a huge improvement. I suppose it must be pretty tricky to
figure out why Xine and VLC play these ISOs just fine when the internal
Myth player won't or you'd have worked it all out by now.

I'm wondering if the tool used to rip has anything to do with it. I tried
to re-rip The Bourne Identity, but my DVD drive in my Myth box is either
busted (which I'm just now learning about since I never use it), or it
can't read these discs for some reason. I'll try some others.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/8517#comment:2>
MythTV <http://www.mythtv.org/>
MythTV
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mythtv at cvs

Jun 23, 2010, 6:03 PM

Post #4 of 7 (348 views)
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Re: Ticket #8517: mythvideo 0.23 cannot play the audio of a particular DVD [In reply to]

mythtv at cvs

Jun 24, 2010, 8:58 AM

Post #5 of 7 (340 views)
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Re: Ticket #8517: mythvideo 0.23 cannot play the audio of a particular DVD [In reply to]

mythtv at cvs

Jun 24, 2010, 11:43 PM

Post #6 of 7 (335 views)
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Re: Ticket #8517: mythvideo 0.23 cannot play the audio of a particular DVD [In reply to]

#8517: mythvideo 0.23 cannot play the audio of a particular DVD
-------------------------------------+--------------------------------------
Reporter: dogshu@… | Owner: skamithi
Type: defect | Status: new
Priority: minor | Milestone: 0.23-fixes
Component: MythTV - DVD Playback | Version: 0.23-fixes
Severity: medium | Mlocked: 0
-------------------------------------+--------------------------------------

Comment(by rconstantine1@…):

Tonight I re-ripped ''The Bourne Identity'' with the Dolby Digital audio
track and it indeed works fine. I haven't checked to see whether the
others are DTS too, but it's looking good that this is the problem. That
would explain why menu audio plays OK on ISOs that have them. Menus aren't
in DTS. I'm going to start re-ripping my other discs and I'll note here if
there are any that aren't "fixed". But still, Xine and VLC play the DTS
audio just fine, so there must be a way to get Myth's internal player to
do so as well. And for all I know, some of my ISOs that work may be DTS
too. I usually only rip one 5.1 audio stream and I can't believe my list
above are the only ones in DTS.

So if a fix is to be worked on, what data (logs) are needed? If it isn't,
then I suppose the wiki should get a note not to rip DVDs using the DTS
stream. I suppose I'll see how one goes about adding content to the wiki.
Cheers.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/8517#comment:5>
MythTV <http://www.mythtv.org/>
MythTV
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mythtv at cvs

Jul 30, 2010, 8:09 PM

Post #7 of 7 (258 views)
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Re: Ticket #8517: mythvideo 0.23 cannot play the audio of a particular DVD [In reply to]

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