[mythtv-users] 0.22RC1 HD-PVR SPDIF audio problems

[John P Poet]

On Thu, Oct 22, 2009 at 5:45 PM, Ken Bass <kbass at kenbass.com> wrote:
> I just configured a HD-PVR.
>
> When I change channels, various channels do not have audio. If I select
> MSNBC for example, I get the following in the logs:
>
> 2009-10-22 19:36:45.204 AFD: Opened codec 0x20d4350, id(H264) type(Video)
> 2009-10-22 19:36:45.204 AFD: codec AC3 has 2 channels
> 2009-10-22 19:36:45.205 AFD: Opened codec 0x20c9f00, id(AC3) type(Audio)
> 2009-10-22 19:36:45.342 [h264 @ 0x7f4b69b32d80]B picture before any
> references, skipping
> 2009-10-22 19:36:45.342 [h264 @ 0x7f4b69b32d80]decode_slice_header error
> 2009-10-22 19:36:45.342 [h264 @ 0x7f4b69b32d80]no frame!
> 2009-10-22 19:36:45.342 AFD Error: Unknown decoding error
> 2009-10-22 19:36:45.342 [h264 @ 0x7f4b69b32d80]B picture before any
> references, skipping
> 2009-10-22 19:36:45.343 [h264 @ 0x7f4b69b32d80]decode_slice_header error
> 2009-10-22 19:36:45.343 [h264 @ 0x7f4b69b32d80]no frame!
> 2009-10-22 19:36:45.343 AFD Error: Unknown decoding error
> 2009-10-22 19:36:45.343 [h264 @ 0x7f4b69b32d80]B picture before any
> references, skipping
> 2009-10-22 19:36:45.343 [h264 @ 0x7f4b69b32d80]decode_slice_header error
> 2009-10-22 19:36:45.343 [h264 @ 0x7f4b69b32d80]no frame!
> 2009-10-22 19:36:45.343 AFD Error: Unknown decoding error
> 2009-10-22 19:36:46.235 Preview: Grabbed preview
> '/mnt/store/2032_20091022193631.mpg' 1280x720 at 64s
> 2009-10-22 19:36:46.275 DevRdB(/dev/video-hdpvr1) Error: Poll giving up
> 2009-10-22 19:36:46.278 MPEGRec(/dev/video-hdpvr1) Error: Device error
> detected
> 2009-10-22 19:36:46.278 DevRdB(/dev/video-hdpvr1): Stop(): Not running.
> 2009-10-22 19:36:47.931 RecBase(7:/dev/video-hdpvr1):
> GetKeyframePositions(1,9223372036854775807,#1) out of 2
>
> One this condition is hit, changing to other channels result in no audio.
> However, if I exit Watch TV and reenter, the same channel works without the
> above errors reported by the backend.

Try adding a 1 second (or longer) sleep to the end of your channel
change script.  If that doesn't help, also try adding the optional
patches described on the wiki.

John
-- 
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