[mythtv-users] anyone have AC3/DTS passthrough working with revo 1600?

Douglas Peale Douglas_Peale at comcast.net
Wed Sep 1 17:49:01 UTC 2010


On 09/01/2010 05:42 AM, Brian J. Murrell wrote:
> On Tue, 2010-06-08 at 13:04 -0400, Brian J. Murrell wrote: 
>> Hi.
>>
>> I have a Revo 1600 connected via HDMI to my TV and while I get typical
>> SD TV stereo sound to play (as PCM) I cannot get AC3/DTS passthrough to
>> work.
> 
> To followup on this old thread, for the sake of anyone coming across it
> in the future, I have resolved my issue and now have audio working as I
> want it which is:
> 
> +------+          +----+                      +----------+
> | Acer |---HDMI---| TV |---optical/toslink----| Receiver |
> | Revo |          +----+                      +----------+
> +------+
> 
> And receiving full Dolby Digital 5.1 (or 2.0 for content recorded from
> digital cable, but it is DD and not PCM!) content on the Receiver.  I
> have not (yet) been able to get DTS to pass through, but I've only had
> the set a day and TBH, if I never got DTS to pass through and just ended
> up re-encoding DTS to DD, I wouldn't shed a tear over it.  To me, (the
> debates about DTS vs. DD aside) passing through DTS only provides the
> benefit of not spending cycles re-encoding something I don't need to.
> 
> So in the end the entire problem was with the Samsung TV.  It just
> refused to pass non-hdcp-protected DD through.
> 
> Conspiracy theorists would probably come up with some interesting
> scenarios why this is, but I tend not to attribute to evil that which I
> can attribute to laziness and incompetence.
> 
> I'd tend to think that Samsung simply doesn't acknowledge that AC3 can
> actually come from a source that does not assert a "do not copy" HDCP
> flag (and just block all AC3) on it and further, they fail to test that
> use-case in their QA cycles.
> 
> b.
> 

It is my experience (SIR-T165) that Samsung is incompetent at firmware.


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