leeroywrx

iTrader: (10)

which is the best setting to set my sky hd to?i have a 1080p tv and am unsure which will give me the best picture

tanyatriangles

iTrader: (2)

I thought all transmissions were on 780?

Kieran_Burns

iTrader: (1)

Sky HD is 1080i by default and I find it stonking on our 1080p TV.

Just watch Nat Geo HD and call me a liar

Power Junkie

iTrader: (1)

720P would be better,

NotoriousREV

Try it on both and decide. 720p *might* be sharper on your TV but it depends how good your TV and/or eyes are. I can't tell the difference on mine.

Cupramax

Sky HD is 720p, your HD box upscales it to 1080i...

logiclee

Sports are broadcast in 720P, other channels in 1080i.

The correct answer is to see what looks the best. Just depends how good your TV deinterlacer and scaler is compared to the one in the Sky box.

I have mine set to 1080i before I feed it through a high end Reon scaler that scales to 1080P and then to the TV.

Cheers
Lee

tath

if you're unsure which one gives you the best picture then surely it doesn't matter?

discovery does look amazing, the random pond/tree/river shot that is sometimes on is ace

Going 4 400bhp

iTrader: (2)

Virgin is 1080p when you watch HD films on it?

Cupramax

Statement or question?

CraigCH

The last I was told was that sky originate everything they make themselves in 1080i or 1080PsF. If they buy in other material (particularly from the states) it may have been originated in 720P so may be broadcast in that format or upscaled to 1080i. If you have a 1080 tv set your box to 1080 so the tv has less to do, just de-interlace. I would of thought there was an auto mode so it outputs the format of the transmission?
Craig.

wwp8

when i went to sony centre for training i was told, for sky use 720p for fast moving images ie sport, and action movies etc
and then use 1080i for other things ie, docs. news etc

Diesel

I doubt it mate! Don't think there is anything that can send that bandwidth yet - hence the 'compromise' 720p being invented. 1080p would be the daddy (on non fast moving action) but no pipes are big enough...

Adding to this mix, is that it also depends on how the programme has been post produced. I have an SD prog going out on CH4 tonight and for this I duplicated the fields for the final tape. The fields are merged to delete interlacing and it gives a slightly more filmic 'steppy' look. 720 P would be best for that - esp for the banging 'The Enemy' track Complex subject...

D

CraigCH

Ok Just confirmed it SKY originate programs in 1080 25i and 1080 25PsF they transmit it in those two formats unles it was originated in 720 50P then it may be transmitted in that format. The guy in the sony shop was sort of right in that fast moving images need the fastest screen refresh rates. Which at the moment are 1080 25i or 720 50P (1080 50P is on the horizon) 50 new pictures or half pictures in interlace are shown every second giving good motion. Low rates like 24P film (from your blue ray) and 25Psf will give the steppy filmic look like diesel acheived in his edit by duplicating fields. Set your Sky boxes to output 1080i because chances are that is what they are receiving 90% of the time.
Craig.

ian_sadler

Correct

Diesel

NOOOOOO!!!!!! They are pushed so hard and struggle with 1080i as is - everything takes an age!!!! >thinks of the overtime and then gets the cheque book out Avid Symphony Nitris <

D

CraigCH

Theoretically We could shoot 1080 50P very soon. I can get it out of the camera head on two BNC's (Dual link) and the new HDCAM SR Machines can record it. With the upgrade the Vision Mixer can handle dual link as well. the broadcasters will love it as it can be compressed further than 25i, so they can squeeze more channels in. Although realistically I'm with you it won't be mainstream for a few years (I hope or the cheque book will never close!)
Craig.

Diesel

Craig - sounds lovely but aren't SR VTR's £70k each? That's a lot for old fashioned linear recording on rust. Out of interest do how do they split the sig down the pipes? 25i x 2? D

CraigCH

Yes £70K for top spec but the base SR machine is down to £35K so hopefully the 1080 50P capable ones will follow suit in time. Yes the dual link basically interlaces the frames into two fields and sends all the field 1's down one cable and all the field 2's down the other. There is lots of new kit coming out now that can put the full 3Gigs down one BNC so Dual link might just be passed over in favour of 3Gigs on one cable but it doesn't travel very far! You can get a 3 gigs capture card for you PC for about a grand.
Craig.

Diesel

As you say that doesn't travel very far so a doubling up on fibre optic 'triax' for OB's sounds a right pain. Still good for cabled in jobs like sport though. Interesting but please dont mention render times!!! D