HD 1080 or 720

[M2]

Hi,


Programs transmitted on HD channels on Freeview and Freesat/Freesat from
Sky are 1080 or upscaled from 720 to 1080?

As all the HD programs on iPlayer are only in 720 ...

[Nigel Roles]

Post by M2
Hi,
Programs transmitted on HD channels on Freeview and Freesat/Freesat
from Sky are 1080 or upscaled from 720 to 1080?
As all the HD programs on iPlayer are only in 720 ...

BBC (1) HD is typically 1080i50. The content is typically captured in
1080, and downscaled for iPlayer. Other broadcasters contributing to
Free/You/View/Sat may differ. Anything >= 576 is considered HD.

[Rog]

----- Original Message -----
From: "Nigel Roles" <***@9fs.org>
To: <***@lists.infradead.org>
Sent: Friday, March 01, 2013 4:09 PM
Subject: Re: HD 1080 or 720

Post by M2
Hi,
Programs transmitted on HD channels on Freeview and Freesat/Freesat
from Sky are 1080 or upscaled from 720 to 1080?
As all the HD programs on iPlayer are only in 720 ...

I'm pretty sure I get 1080 from iPlayeer...
Ripper Street for example.

File sizes are about 1.15 GB per hour.

Rog

[Shevek]

Post by Rog
I'm pretty sure I get 1080 from iPlayeer...
Ripper Street for example.
File sizes are about 1.15 GB per hour.

All Ripper Street have been 1280x720 from iPlayer

File size is not an indication of pixel dimensions, it is the bit-rate
which determines file size

[Christopher Woods (CM)]

Post by Shevek

Post by Rog
I'm pretty sure I get 1080 from iPlayeer...
Ripper Street for example.
File sizes are about 1.15 GB per hour.

All Ripper Street have been 1280x720 from iPlayer
File size is not an indication of pixel dimensions, it is the bit-rate
which determines file size

Agreed. All HD content available on the main iPlayer service is 1280x720p25.

HOWEVER, the HD programme material available if you have a Sky+HD box
... is 1920x1080i25 (I think, you get combing artifacts when you hit
pause but this might also be because the Sky+HD boxes max out at 1080i
on HDMI).

So, either BBC provides a feed exclusively to Sky's on-demand platform
just for us lucky Sky customers, or there is another unadvertised
version feed only available for specific devices or proxied through
specific gateways. When I realised I Wiresharked some traffic as I
downloaded a file, it was coming from a CDN. More investigation required.