Bill <no...@none.invalid> wrote:
>I wish the various TV providers would just kill SD already, within the
>delivery network anyway. If someone wants to downsample it in the privacy of
>their own home, that's fine.
I don't agree. Here's why:
TCM is an example of a satellite channel with a pair of feeds: HD and SD.
The vast majority of their programming isn't HD, given that it's movies
in 4:3 aspect ratio. Movies in other aspect ratios are upconverted to HD
so that they can be shown widescreen on 16:9 tvs. The ones that aren't
1.85:1 are letterboxed.
Note that it's easy to tell non-converted 4:3 programming on an HD
channel. There's a minor horizontal spread.
If I'm recording, I record from the SD channel for 4:3 movies, and the
HD channel for widescreen. I'd rather not waste disk space.
TNT, AMC, and a lot of other satellite channels do HD wrong. With
non-upconverted SD programming, they screw with the aspect ratio giving
programming a horizontal stretch, distorting it. If I really want to
watch something, I switch to the SD channel to avoid that crap.
What about satellite channels that retain the HD feed only? They rely on
the cable head end or a converter box to convert the signal to SD, which
then letterboxes their HD programming. Any 4:3 programming in that HD
feed ends up not being displayed correctly top to bottom of the screen,
but in the center of the screen only, surrounded by black bars on
all four sides.
Ideally, information about the aspect ratio should be embedded in the stream,
allowing the tv to display it correctly, but that's not done. Then there
would be no reason for the redundant SD feed.