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1080p burn of 1080i video
Philly Bill [Avatar]
Member Location: Philadelphia, PA Joined: Dec 28, 2010 20:26 Messages: 57 Offline
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I'm about to burn an AVCHD disc of video that was shot at 1080i. At the Disc Preferences section, I'm offered 1080p as well as all of the lesser modes. Space isn't an issue (I don't think) because the video is only 14 minutes and there are few transitions, titles, etc. and a simple disc menu.

Is there any advantage to burning at 1080p video that is natively 1080i? HP Pavilion Elite 410f. AMD Phenom II 1045T (six core), ATI Radeon HD 5570 Graphics Card w/1GB, 8GB memory, terabyte HD, generic multi optical, LG BD burner, both Lightscribe, Windows 7 Home Premium 64 bit. Formerly used Ulead/Corel VideoStudio.
Dafydd B [Avatar]
Senior Contributor Joined: Aug 26, 2006 08:20 Messages: 11973 Offline
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Hi,

Ok, here we have a question that is dependent upon content and the visual preference of the editor as well as the alterations caused by the render process and the change thereof. The question has to be asked and answered:
What visual change have you noticed when you did a test for both selected formats?

I would presume you did carry out a test to see and check which you prefer.

I'm going to presume you haven't looked up or are uncertain of the differences between "interlaced" and "progressive" recorded footage - forgive me if you have already looked this info up.

I would suggest you stick with the original "fields per second" and not convert it to progressive "frames per second" in this instance.

Dafydd

This message was edited 1 time. Last update was at Jan 21. 2011 11:45

Philly Bill [Avatar]
Member Location: Philadelphia, PA Joined: Dec 28, 2010 20:26 Messages: 57 Offline
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In a way, I am flying blind. I don't have a hi-def TV or blu-ray player and my computer monitor isn't the higest def it could be. I'm making a disc for a friend of her run in a marathon. The video has a lot of action (not sure if 8 minute miles classifies as "fast" action). So no, I did not make tests of both 1080i and 1080p because I have no way to view them at this time. I'm not even sure if my friend has a blu-ray player but I'm providing both standard DVD and AVCHD for future-insurance.

I do know the difference between progressive and interlaced.

Any help would be appreciated.

Bill

This message was edited 1 time. Last update was at Jan 21. 2011 12:37

HP Pavilion Elite 410f. AMD Phenom II 1045T (six core), ATI Radeon HD 5570 Graphics Card w/1GB, 8GB memory, terabyte HD, generic multi optical, LG BD burner, both Lightscribe, Windows 7 Home Premium 64 bit. Formerly used Ulead/Corel VideoStudio.
Dafydd B [Avatar]
Senior Contributor Joined: Aug 26, 2006 08:20 Messages: 11973 Offline
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Ok Bill,

I don't shoot footage in interlaced - but that's another story.

I would suggest you stick with the interlaced format throughout. I believe in retaining the original as best as possible.

If your camera has the capability to record in progressive - chose that next time.

Dafydd
pjc3
Senior Member Location: Australia Joined: May 29, 2010 19:33 Messages: 247 Offline
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Remember the 1080p preset is 24fps. If you shot in 29.97 then you are likely to see juddering with the frame rare conversion. I would also stick with interlaced if were you. Panasonic SD9, Panasonic TM700, Panasonic SD600, GoPro HD Hero.
Philly Bill [Avatar]
Member Location: Philadelphia, PA Joined: Dec 28, 2010 20:26 Messages: 57 Offline
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My Panny SD9 is capable of 1080p but only at 24fps. I'm wondering if the progressive mode would more than compensate for the slower fps in moderate action video. Any thoughts? Again, I'm a little limited in my viewing abilities at this time.

So the question is: for shooting moderate action, would 1080p 24fps be better than 1080i 30fps? Thanks.

This message was edited 1 time. Last update was at Jan 22. 2011 21:50

HP Pavilion Elite 410f. AMD Phenom II 1045T (six core), ATI Radeon HD 5570 Graphics Card w/1GB, 8GB memory, terabyte HD, generic multi optical, LG BD burner, both Lightscribe, Windows 7 Home Premium 64 bit. Formerly used Ulead/Corel VideoStudio.
James Dotson
Senior Contributor Location: Tennessee Joined: Aug 24, 2009 20:40 Messages: 3066 Offline
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I have not compared the two, but I would think so. 24fps should be fine if that is what you shoot in and produce to. The problem arises when you start converting. That said, I have even produced 1080i to 720p for fast action and got better results. Like already mentioned, you probably just need to try some samples and see what works for you. What works for me may not work for you. It's just a good starting point. __________________________________
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