[mythtv-users] Partly OT: Output analog recordings to SPDIF
N Dugas
normdugas at yahoo.ca
Sun Apr 16 05:12:40 UTC 2006
Ashley Clark wrote:
> I set up my SPDIF connection using the information at this page:
> http://mythtv.org/wiki/index.php/Configuring_Digital_Sound
>
> After using their revised asoundrc I'm using ALSA:digital as my output
> device and I get clear PCM 2.0 sound and 5.1 pass-through.
>
> On Apr 15, 2006, at 11:22 PM, N Dugas wrote:
>
>> I've been playing around with SPDIF and have been able to output HD
>> sound to SPDIF. When playing back analog video, the sound stutters and
>> sounds like chipmunks. Googling has not yielded a working solution.
>>
>> My .asoundrc looks like this:
>>
>> pcm.!default {
>> type plug
>> slave.pcm dmix-nforce
>> }
>>
>> #my spdif is device 2
>> pcm.nforce-hw {
>> type hw
>> card 0
>> device 2
>> }
>>
>> pcm.dmix-nforce {
>> type dmix
>> ipc_key 1234
>> ipc_perm 0666
>> slave {
>> #point the pcm to spdif
>> pcm "nforce-hw"
>> channels 2
>> period_time 0
>> buffer_time 0
>> period_size 2048
>> buffer_size 32768
>> }
>> }
>>
>> When I select ALSA:dmix-nforce as the device, mythfrontend complains
>> that it cannot open the device. For now, I have to chose either
>> ALSA:plug:spdif or /dev/dsp. I'd like to be able to keep it on one
>> setting. Any ideas?
>>
I also tried the .asoundrc from the Myth Wiki and got the same results.
The exact error I got when I used this .asoundrd (I restarted
mythfrontend to make sure it was picked up) is:
NVP: Disabling Audio. reason is: snd_pcm_open(digital): No such file or
directory.
I get this error for all adio types.
Are there any extra flags I can use to see what it's trying to do?
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