[opendtv] Re: FCC Eliminates Simulcast Rules
- From: Terry Harvey <tjharvey@xxxxxxx>
- To: opendtv@xxxxxxxxxxxxx, opendtv@xxxxxxxxxxxxx
- Date: Thu, 09 Sep 2004 21:59:21 -0700
Many PBS stations are decoding and re-encoding the video and audio to air.
The problem with decoding the audio is that you must keep track of each
audio channel AND the encoding Dolby metadata describing the encoding setup.
At our PBS member station we record the Soundstage on a server for program
delay or alternatively pass through the Soundstage direct to air. The
pre-encoded PBS AC-3 audio + metadata is not decoded at our station so that
the full 5.1 SoundStage audio finds its way to air.
Other stations may decode the 5.1 and because perhaps there isn't the
infrastructure to convey the multiple channels + metadata to the
re-encoder, the SoundStage audio may go out as just stereo.
Terry Harvey
At 07:36 PM 9/9/2004 -0700, Morris Jones wrote:
>On Thu, 9 Sep 2004, Kon Wilms wrote:
>
> > Feel free to correct me if I'm wrong, but thats the complete opposite to
> > what I've heard from engineers at the stations I've been in (and this
> > would be stations across the country, not just local). Most of them have
> > given me the 'PBS master feed passes through us, we don't even have to
> > reencode it' line. It does seem that some opt for an encoder because the
> > PBS feed is of such a high bitrate that there isnt space for multicast
> > (video or IP). It seemed to me that centralcasting was where PBS was
> > headed.. or not?
>
>I wish that could explain why some PBS local broadcast _Soundstage_ in
>Dolby Digital 5.1 and some broadcast it in 2.0 Pro-Logic. :(
>
>Maybe KCET does that so they can simulcast 480i on the subchannel.
>
>Mojo
>--
>Morris Jones <*>
>Monrovia, CA
>mojo@xxxxxxxxxxxxx
>http://www.whiteoaks.com
>
>
>
>----------------------------------------------------------------------
>You can UNSUBSCRIBE from the OpenDTV list in two ways:
>
>- Using the UNSUBSCRIBE command in your user configuration settings at
>FreeLists.org
>
>- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
>unsubscribe in the subject line.
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:
- Using the UNSUBSCRIBE command in your user configuration settings at
FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
unsubscribe in the subject line.
Other related posts:
