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September 26th, 2009, 11:20 PM
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#1 |
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New Boot
Join Date: Sep 2008
Location: Fountain Valley, CA
Posts: 6
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Ideal Recording format for SD production
Is there a optimal recording format when your production will be SD ntsc.
I am using the EX1 and have almost every software conversion utility available. |
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September 26th, 2009, 11:26 PM
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#2 |
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Inner Circle
Join Date: Nov 2006
Location: Tallahassee, FL
Posts: 4,100
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Probably 1080/30p. Most resolution, easy conversion to 480/60i.
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DVX100, PMW-EX1, Canon 550D, FigRig, Dell Octocore, Avid MC4/5, MB Looks, RedCineX, Matrox MX02 mini, GTech RAID, Edirol R-4, Senn. G2 Evo, Countryman, Moles and Lowels. |
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September 27th, 2009, 12:37 AM
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#3 |
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Trustee
Join Date: Sep 2004
Location: Chislehurst, London
Posts: 1,724
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The BBC recommends shooting at 720P - less pixels to throw out in the downsizing process.
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Eyes are a deaf man’s ears. Ears are a blind man’s eyes |
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September 27th, 2009, 02:23 AM
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#4 |
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Inner Circle
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
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720P60 would be the way to go. Converting 1080i to SD often leads to problems with the field order and 1080 has too much resolution which lead to excessive aliasing. 720 is better with less aliasing due to the lower resolution. If you shoot 60P when converting to 60i then individual frames get turned into fields so you get smooth motion but without the problems you get shooting 1080 60i.
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Alister Chapman, Film-Maker/Stormchaser http://www.xdcam-user.com/alisters-blog/ My XDCAM site and blog. http://www.hurricane-rig.com |
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September 27th, 2009, 10:09 AM
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#5 |
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Trustee
Join Date: Sep 2004
Location: Chislehurst, London
Posts: 1,724
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Sorry, I should have added 720P 60 or 50fps (NTSC & PAL regions)
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Eyes are a deaf man’s ears. Ears are a blind man’s eyes |
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September 27th, 2009, 10:24 AM
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#6 |
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Major Player
Join Date: Nov 2006
Location: Hobe Sound, Florida
Posts: 213
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Agree 720 60p. We have many clients that require SD, but want a HD archive. I would prefer to archive in 1080, but our tests demonstrate 720 60P is the way to go for now.
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September 27th, 2009, 01:04 PM
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#7 |
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Major Player
Join Date: Sep 2004
Location: York, North Yorkshire, England.
Posts: 472
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So if you are say shooting weddings and down converting to SD dvds would you choose 720 instead of 1080
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Ian Thomas. Thomas Video Productions |
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September 27th, 2009, 01:46 PM
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#8 | |
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Inner Circle
Join Date: Jan 2006
Posts: 2,699
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Quote:
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September 27th, 2009, 04:13 PM
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#9 |
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Regular Crew
Join Date: Sep 2006
Location: Las Vegas, NV
Posts: 126
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My best workflow for SD down-coversion off of EX camera
I saw the BBC recommendation to shoot 720P60 for downconvert and I am REALLY happy with the result.
In fact, yesterday I shot a sports video that needs to be 720x480 60i, and the cleanest, easiest workflow for me is: - Shoot 720p60, protecting for 4:3 - Play back SD-SDI out of camera with the edge crop downconversion - Capture the SDI with my AJA LHe doing a realtime conversion to DV50 codec (I don't have harddrives fast enough for uncompressed SDI video). This is hands down the best looking SD video I have seen come off my camera. The drawback is of course you are back to real-time capture and you have to have a SDI-capable card to injest into your computer. And this workflow is only if you are shooting with the EX but you know you will only ever need an SD version of your video (which in this day does still apply sometimes). |
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September 27th, 2009, 06:44 PM
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#10 |
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Major Player
Join Date: Feb 2006
Location: bendigo, australia
Posts: 204
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Nearly all my work is for SD output and I have been shooting in 1080 25P (50fps), editing and rendering to a Full HD avi file then downconverting using MainConcept Reference.
I have noticed the aliasing in a short film I just completed where there were several close ups of text messages from a mobile phone. The text produced some aliasing over the several seconds it was on the screen. I think I will try shooting in 720p for those projects I know will only be used on std DVD's and now am wondering if I should start shooting interlaced as well? Ive always gone with progressive but as alot of my work ends up on std DVD, should I just shoot in interlaced and continue that down the work flow? Cheers Jamie |
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September 28th, 2009, 06:42 AM
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#11 | ||
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Trustee
Join Date: Sep 2004
Location: Chislehurst, London
Posts: 1,724
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Quote:
Quote:
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Eyes are a deaf man’s ears. Ears are a blind man’s eyes |
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September 28th, 2009, 07:16 AM
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#12 | |
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Major Player
Join Date: Feb 2006
Location: bendigo, australia
Posts: 204
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Quote:
I shoot in 25 progressive FPS (Im in PAL land) and if I lived in NTSC land I would assume if I wanted to shoot progressive I would shoot in 30 or 24fps. When I read 60 or 50 as a reference to what format someone is shooting, I am assuming interlaced. Or are we referring to shutter speed? I am guilty of 'skimming' through threads a bit so maybe I missed something! cheers Jamie |
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September 28th, 2009, 07:31 AM
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#13 | |
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Major Player
Join Date: Feb 2006
Location: bendigo, australia
Posts: 204
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Its the terminology thing that gets me. I shoot in 25 Progressive with a shutter speed of 50. I hadnt used the 720 50p format option and hadnt noticed it! I will give it a go now as the work flow mentioned sounds good for what I do. Im clearly a little slow on the uptake! Cheers Jamie |
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September 28th, 2009, 08:15 AM
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#14 | |
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Trustee
Join Date: Sep 2004
Location: Chislehurst, London
Posts: 1,724
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No problem Jamie, it can all be a bit daunting.
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When shooting in 720 25P with the shutter turned OFF, then you exposures will be 1/25 sec on each frame. If shooting 720 50P then your shutter speed will be 1/50 sec per frame. If shooting in 720 25P then I would recommend that you turn the shutter ON (front switch on the EX3) and set your shutter speed to 1/50 sec (double the frame rate). You will still be shooting in 25fps. This should eliminate any slight blurring through camera movement. Perhaps the best way is to take your camera out in the garden and shoot 1 minute of footage (data) using each of the settings and then compare. I did this and wrote the files to DVD, then looked at them on my TV set, at least it gave me a good idea of how the movie quality was going to look like.
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Eyes are a deaf man’s ears. Ears are a blind man’s eyes |
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September 28th, 2009, 05:56 PM
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#15 | |
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Major Player
Join Date: Feb 2006
Location: bendigo, australia
Posts: 204
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The whole shutter off/on thing is a strange thing to me. I just leave it on and leave it at 1/50 usually. I dont really understand why I need the option of turning it off! Cheers Jamie |
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