[mythtv] Ticket #7067: Initial DVD playback speed too fast.

Davin McCall davmac at davmac.org
Mon Dec 7 05:59:39 UTC 2009


Hi Manuel,

Regardless of any ill effect it may have on your own particular machine, 
I have done my best to make the patch "obviously correct" and I believe 
that it *is* correct - it fixes real logical errors with the code. There 
is explanation in the ticket (#7067) if anyone cares to read it.

It also happens to fix DVD playback for me and several others without 
adversely affecting playback of recorded TV in the way you describe.

What you see is most likely the result of (yet) another bug in Myth. I 
am aware of at least one - you might like to try the attached patch as a 
starting point - I'd really appreciate some testing of it. It fixes an 
issue with frame dropping (which Myth, as far as I can see, pretty much 
completely fails to do correctly) which might cause symptoms such as 
you've described.

I do have to ask that the changes in r22947 NOT be reverted. It fixes 
real bugs (read the code!). If it exposes other bugs then they need to 
be fixed separately. I'm happy to work with you Manuel to figure out 
what is causing your particular issues and see if we can figure out a 
solution, but if r22947 is reverted then I'm going to have to give up on 
MythTV.

Davin



On 07/12/09 15:05, Manuel McLure wrote:
> On Tue, Dec 1, 2009 at 5:06 PM, MythTV<mythtv at cvs.mythtv.org>  wrote:
>    
>> #7067: Initial DVD playback speed too fast.
>> ----------------------------------------------------+-----------------------
>>   Reporter:  Johnny Stenback<mythtv@…>                |        Owner:  janne
>>      Type:  defect                                  |       Status:  new
>>   Priority:  major                                   |    Milestone:  unknown
>> Component:  MythTV - Video Playback                 |      Version:  head
>>   Severity:  medium                                  |   Resolution:
>>   Mlocked:  0                                       |
>> ----------------------------------------------------+-----------------------
>>
>> Comment(by skamithi):
>>
>>   (In [22947]) Refs #7067. Patch from Davin McCall. It should resolve dvd
>>   playback issues and not affect live tv playback. patch tested by other
>>   users. will commit to 0.22 fixes in a week or 2 if no further issues are
>>   reported.
>>      
>
> I'm afraid I have to be the naysayer here - applying this patch to my
> mythtv causes random stuttering on playback of some recorded TV. It's
> not consistent - the video will play fine for a while, then start
> stuttering for a few seconds and then go back to playing smoothly. If
> I back out the patch everything plays smoothly.
>    

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