[mythtv] [mythtv-commits] Ticket #6395: AVFormatDecoder Language/codec detection improvements

Robert McNamara robert.mcnamara at gmail.com
Sat Mar 28 05:55:18 UTC 2009


On Fri, Mar 27, 2009 at 10:45 PM, George Nassas <gnassas at mac.com> wrote:
> On 28-Mar-09, at 1:35 AM, Robert McNamara wrote:
>
>> Currently goes
>> DTS->AC3->Whatever, new logic goes TrueHD->DTS->AC3->Whatever.
>
> Cool. Shouldn't DTS-MA be at the top of the list?
>
> - George
> _______________________________________________
> mythtv-dev mailing list
> mythtv-dev at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
>

DTS-HD MA is not yet broken out as a seperate codec in
libavcodec/format.   In ffmpeg trunk one *can* parse out the DTS core,
but as TrueHD is used in blu-ray on literally a tiny handful of blu
ray disks, none of which contain DTS-HD, the fallback still works in
this case (I have backported these parsing changes for my local copy).
 Once DTS-HD MA is actually decoded versus having the DTS core parsed
out, yes, it should be at the top of the list, as it should then be a
seperate CODEC_ID.

The patch really makes a big difference for HD-DVD, where the behavior
is pretty universally accurate.  It has a theoretical application to
Blu-ray, but most people will probably never see a Blu ray disk with
TrueHD.

Robert


More information about the mythtv-dev mailing list