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- Xref: sparky comp.compression:2827 rec.video:9617 rec.video.satellite:3798 rec.video.production:1150
- Newsgroups: comp.compression,rec.video,rec.video.satellite,rec.video.production
- Path: sparky!uunet!think.com!unixland!fybush
- From: fybush@unixland.natick.ma.us (Scott Fybush)
- Subject: Re: Compression artifacts in NBC Olympic coverage
- Message-ID: <1992Jul27.162002.21503@unixland.natick.ma.us>
- Organization: Unixland Public Access Unix (508) 655-3848
- References: <MONTA.92Jul26181344@image.mit.edu>
- Date: Mon, 27 Jul 1992 16:20:02 GMT
- Lines: 28
-
- monta@image.mit.edu (Peter Monta) writes:
-
- >While I was watching the US-Angola basketball game and the coverage
- >of the early gymnastics compulsories, I thought I saw several image
- >artifacts. Finally I taped a segment of the gymnastics and waited for
- >a particularly bad example, then went through it frame by frame.
-
- >Where in the chain from Barcelona does this occur? Is satellite
- >bandwidth so scarce that NBC must resort to compressed NTSC? How
- >might NBC be convinced to stop doing this, or at least use a better
- >coder? Finally, if you have a tape of the afternoon coverage, take
- >a look and try to confirm that I'm not off my rocker. For comparison,
- >NBC comes to me through WBZ, channel 4 in Boston, through the MIT cable
- >television system.
-
- So I'm not crazy after all! I work at WBZ, albeit on the radio side,
- not TV, and as I was sitting in the newsroom watching some of the
- swimming coverage this morning, I thought I saw some odd artifacts
- during fast motion. This can't be anything much past NBC's end, as
- I was watching the NBC Ku-band satellite signal over the house cable
- system, so the only thing between me and the satellite signal was an
- RF modulator, a few hundred feet of coax, and a TV tuner.
-
- I don't know any of the TV engineers very well, but I'll try to find
- one to ask tomorrow. I'll post what I find out.
-
- Scott Fybush -- fybush@unixland.natick.ma.us
- Not the opinions of Group W or of WBZ/WBZ-TV
-