[mythtvnz] Time stretch audio skipping

[Duncan Kennington]

On 26 May 2014 15:30, Steve Hodge <stevehodge at gmail.com> wrote:

> On Mon, May 26, 2014 at 2:40 PM, Aaron Pelly <apelly at monkeymasters.co.nz>wrote:
>
>> Hi,
>>
>> I'm down to my last couple of minor issues. Thanks for the help so far!
>>
>> I have audio set to alsa:default. Above about 1.1x time stretch there is
>> some noticeable skipping/clicking in recorded playback audio. I have not
>> had this issue with mplayer which also uses alsa. Admittedly this is a
>> pretty minor.
>>
>> Ubuntu audio has been fairly well behaved for the last few years, but
>> earlier experience tells me this can be a real can of worms.
>>
>> Log attached.
>>
>> Am I missing something obvious?
>>
>
> What's you CPU usage like when timestretch is 1.2? You're getting buffer
> underruns so Myth is not supplying data to ALSA fast enough.
>

Agree, I have only seen this on underpowered frontends or where the VDPAU
hasn't been enabled in playback profiles.
http://www.mythtv.org/wiki/VDPAU#Enabling_VDPAU_in_MythFrontend
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