1080i/p or 720 p for standard def tv commercial

R

ryaninoz

Well-known member
I am producing a series of commercials and shooting on the 300. The delivery specs for broadcast are (PAL ) 576i am I better of shooting 1080 or 720/50p?

It seems like it is always a better idea to shoot as high res as you can but I seem to recall reading that 720/50p down converts better 1 frame per field or something. Any advice greatly appreciated.

Thanks
 
I just did some football coverage at Celtic FC for italian TV and used DVC Pro 50 at 576i 50i on my HPX301/371.

I have some BBC SD camera settings if you need them and the results were very good and certainly up to digi beta standard.
 
SCENE NAME :BBC-SD
00005000: 1 ; VFR : OFF
00005001: 25 ; FRAME RATE: 25 FRAME
00005002: 021C0708 ; (SYNCHRO SCAN):
00005003: 12 ; DETAIL LEVEL: 4
00005004: 8 ; V DETAIL LEVEL: 0
00005005: 13 ; DETAIL CORING : 5
00005006: 8 ; CHROMA LEVEL: 0
00005007: 8 ; CHROMA PHASE: 0
00005008: 8 ; COLOR TEMP Ach: 0
00005009: 8 ; COLOR TEMP Bch: 0
0000500A: 128 ; MASTER PED: 0
0000500B: 16 ; A.IRIS LEVEL: 0
0000500C: 2 ; DRS EFFECT: 3
0000500D: 2 ; GAMMA : SD NORM
0000500E: 2 ; KNEE: LOW
0000500F: 1 ; MATRIX: NORM2
00005010: 0 ; SKIN TONE DTL : ON
00005011: 0 ; V DETAIL FREQ : THIN
 
Thanks for the scene file I will definitely add it to my settings however I would like to shoot in one of the HD formats - for re framing - smoothcam etc - also the client wants HD versions for online content. Do you know if there is any advantage in 720/50p over 1080 when down converting to sd or am I just better off shooting the highest res possible?
 
I think you are best shooting 720p 50p from what I have been told rather than 1080, that scene file may be no good for that though as it is for SD although you could try it and see what happens.

I usually deliver 720p for on-line so that is the format I tend to use if I need optimum storage space and vari cam etc.

As for codecs AVC Intra 100 is the best so stick with it.

I rarely shoot SD but was very impressed with the pictures we got this week on DVC Pro 50 so that BBC-SD file is a good starting point for DV/DVC Pro and DVC Pro 50 if you ever need to use it.
 
GaryNattrass said:
I think you are best shooting 720p 50p from what I have been told rather than 1080, that scene file may be no good for that though as it is for SD although you could try it and see what happens.

I usually deliver 720p for on-line so that is the format I tend to use if I need optimum storage space and vari cam etc.

As for codecs AVC Intra 100 is the best so stick with it.

I rarely shoot SD but was very impressed with the pictures we got this week on DVC Pro 50 so that BBC-SD file is a good starting point for DV/DVC Pro and DVC Pro 50 if you ever need to use it.
Click to expand...

gary-

will these settings also work on the hpx170 or the dvx100-an sd camera?

thanks in advance.

be well

rob
smalltalk productions
 
There's no AVC-Intra on a 170, but there's DVCPRO 100 in both 1080 and 720, and DVCPRO 50. There's no HD on a DVX at all. Only SD DV.
 
When you downconvert HD to SD you get artifacts (jaggies/throb, buzzing) so I would shoot DVC Pro 50i.

DVC Pro 50 is a great 4:2:2 codec and if you are delivering i to tape then shoot i.

I do see your advantage to resize within a 720x576 frame if you shoot larger size frames and use After Effects as an editor - Avid chucks the extra pixels away as does FCP (?) so nothing gained.

Cheers

BD
 
If you need a 720x576 end image (i,e this is your project type) but have a source of 1920 x 1080 pixels to play with, using a resolution independent editor, you can zoom in to a 720x576 portion of the 1920 x 1080 frame and not lose any quality. If you do this on a non resolution independent editor then the second you start to zoom in you lose quality. The spare pixels are effectively gone the second you bring the big frame into the little frame project. Hope that makes sense. BD
 
David Jimerson said:
No, you don't. You might if it's a poor conversion, but as a general matter, you don't.
Click to expand...

We'll have to disagree on that. In fact its actually specified by the BBC that you cant use in VTR deck scalers or software based scalers. A good proprietary hardware scaler will of course give excellent results. BD
 
Everything I shoot is HD. It's pretty much all delivered as SD. There are no problems. There's certainly no throbbing or buzzing.
 
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