[mythtv-users] SD DVB-T in the UK: Surround Sound?

[Jean-Yves Avenard]

On 14 January 2011 21:33, John Pilkington <J.Pilk at tesco.net> wrote:
> My recording of the first episode of the new series "Human Planet" from BBC1
> (SD DVB-T) is marked as being in "Surround Sound".  I don't think I've seen
> this before.  I've now deleted the original recording but ffmpeg -i looks as
> usual:
>
>    Stream #0.0[0x258]: Video: mpeg2video, yuv420p, 720x576 [PAR 64:45 DAR
> 16:9], 15000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
>    Stream #0.1[0x259](eng): Audio: mp2, 48000 Hz, 2 channels, s16, 256 kb/s
>    Stream #0.2[0x25a](eng): Audio: mp2, 48000 Hz, 1 channels, s16, 64 kb/s
>    Stream #0.3[0x25d](eng): Subtitle: dvbsub

As other have mentioned, most likely that it's Prologic Audio.

If you enable the 5.1 upmixed in mythtv audio config, you will get
surprising good result with those contents; provided you have
connected your PC to a 5.1 output (either analog or digital)