[opendtv] Re: DTV Audio
- From: "John Shutt" <shuttj@xxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Fri, 8 Aug 2008 19:29:43 -0400
Cliff,
I strongly recommend you contact the station and tell them. They will
appreciate it, and no, they probably can't hear it. Most stations still
monitor their analog off-air as their primary audio source in Master Control,
and only have QC monitoring of the digital stream, and in some cases the cable
channel.
We had some people complain about the video quality (or lack thereof) of our HD
channel on AVS forum yesterday, and it resulted in our finding that our
Tandberg multiplexer had locked up and the bitrate for the HD channel was
locked at 7 Mbps video, and our first SD channel was also stuck at 7 Mbps. Our
second and third channels were both stuck at about 1.5 Mbps. Normally all four
services are stat muxed out of a pool of 18 Mbps.
The video looked passable on our air monitors, so we didn't notice the drop in
HD quality, but the AVS forum viewer did, and particularly noticed how small
the cached file was for a program he recorded on his hard drive.
Tell us when something is wrong, and we'll fix it. With the criminally low
staffing these days, and the increased workload of monitoring many channels
plus records, ingests, productions, and duplications, we can't see everything
all the time.
John
----- Original Message -----
From: Cliff Benham
The problems with live audio show up much worse in local HD. The CH 6 news
staff all
sound distorted and clipped without any headroom in the signal, like the VU
meter
[if they even have such a beast anymore] is being slammed into the end stop.
Can they even hear this? Is anybody in engineering even listening?
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