[mythtv-users] MythTV unaware of recordings' actual audio properties

[John Pilkington]

On 10/03/14 13:19, Will Dormann wrote:
> On 3/10/14, 8:50 AM, John Pilkington wrote:
>> Have you tried mythffmpeg -i?
>>
>> http://www.gossamer-threads.com/lists/mythtv/users/556298#556298
>
>
> I think the answer was already given (displayed audio comes from EPG?)
>
> But just to close the loop here:  Given two recent recordings that show
> up as Stereo, but I expect to be 5.1 and sound like 5.1 to me:
>
> mythffmpeg -i:
> Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo,
> fltp, 384 kb/s
> Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
> 5.1(side), fltp, 384 kb/s
>
> ffmpeg -i:
> Stream #0.1[0x1100]: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s
> Stream #0.1[0x1100]: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s
>

OK.  And there are several versions of ffmpeg or avconf(?) out in the 
wild, as well as mediainfo.  And sampling can be done at varying times. 
and streams may come and go.  Use all tools with caution! :-)