[mythtvnz] VDPAU AV-Sync Errors

[Steven Ellis]

On 26/04/2009, at 6:32 PM, Steven Ellis wrote:

>
> On 26/04/2009, at 5:52 PM, Jean-Yves Avenard wrote:
>
>> Ok
>>
>> I have your two videos playing properly now ...
>>
>> It was just a matter of increasing the video buffer again.
>>
>> the downside in doing so is that videos playback takes slightly  
>> longer to start.
>>
>> In those two streams you've sent, there's up to 850ms delay between
>> audio and video ! that's huge
>
> Wow...
>
> Might have a word with the guys at freeview about this. Their spec  
> does require quite a bit of buffer on the STBs to handle this sort  
> of thing, but I wasn't expecting this sort of delay.

I've passed on some comments to freeview and just waiting on their  
response.

> Thanks for tracking down the problem.
>


Just trying Jeam-Yves latest build with the bigger buffer. The audio  
issues appear to have been resolve, but I'm still getting the  
occasional front end crash when I'm changing channels on Live TV. I'll  
need to investigate a bit further.

Any here noticed some issues tuning to the freeview|HD radio channels.  
It took 23 seconds to tune to the radio, and I'm seeing  
"NVP::AddAudioData():p1: Audio buffer overflow, audio data lost!"  
messages

Steve


Steven Ellis - Technical Director
OpenMedia Limited
email   - steven at openmedia.co.nz
website - http://www.openmedia.co.nz

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