Final Cut

menszerman · 01-05-2006, 12:30 PM

I am using interviews with Katrina survivors to make an audio and still photograph presentation using Final Cut. I will export it as a Quick Time movie. I want people to be able to play it on various computers. I may post it on a web site. I want to be able to use it as part of an exhibit that would use flat screen TV's to present the images and speakers for the audio. My question is after I Photoshop the images what format should I use to put them in Final Cut? When I play the exported movie will the size of the displayed image depend on the way it was saved in Final Cut? Will compression, as with JPEG's, be a problem? I shot the images with a Canon 20 D in raw.

ebackhus · 01-05-2006, 01:26 PM

What aspect are you using? NTSC is 525x480, PAL is 725x480 (and please correct me if I am wrong, anyone.)

Things like JPEG compression doesn't really show up if you keep at 80% or higher when compressing and is even less noticable on a TV set. I'd recommend using the RAW images while composing the film in order to avoid unneccessary compression of the stills.

DavidThX · 01-21-2006, 04:03 AM

Well since you asked, your slightly off.
It's actually 640x480(out of 525 lines).
The horizontal lines for NTSC is actually 525 lines,
of which 480 contain picture information.

The best way to explain it is this way:

The size of a video image is measured in pixels for digital video or horizontal scan lines for analog video. Standard-definition television (SDTV) is specified as 640×480i60 for NTSC and 720×576i50 for PAL or SÉCAM resolution. New high-definition televisions (HDTV) are capable of resolutions up to 1920×1080p60, i.e. 1920 pixels per scan line by 1080 scan lines, progressive, at 60 frames per second.

There can be some additional confusion in the horizontal-resolution specification. When refering to fixed-pixel displays or the resolutions of digital-television formats, the term "pixel" is correct. When refering to an analog television's horizontal resolution, the term "TV Line" (TVL) is more appropriate. This specification is the number of vertical lines the television can resolve per picture height. If the set is driven by a signal of closely spaced alternating black and white vertical lines, we count the number of visually resolvable lines to determine the set's horizontal resolution.

Don't confuse these vertical lines with the horizontal scanning lines of a television. The number of horizontal lines is fixed at 480 in NTSC video, and can by 720 or 1080 in HDTV. (NTSC is actually 525 lines, of which 480 contain picture information. The other 45 lines are not displayed on the screen, and contain synchronization pulses, and information such as Closed Caption data.) The 480 lines you see are called active scan lines.

01-05-2006, 12:30 PM	#1 (permalink)
menszerman Registered User Join Date: Jan 2006 Posts: 1 OS: os10	Final Cut I am using interviews with Katrina survivors to make an audio and still photograph presentation using Final Cut. I will export it as a Quick Time movie. I want people to be able to play it on various computers. I may post it on a web site. I want to be able to use it as part of an exhibit that would use flat screen TV's to present the images and speakers for the audio. My question is after I Photoshop the images what format should I use to put them in Final Cut? When I play the exported movie will the size of the displayed image depend on the way it was saved in Final Cut? Will compression, as with JPEG's, be a problem? I shot the images with a Canon 20 D in raw.

01-05-2006, 01:26 PM	#2 (permalink)
ebackhus Manager, Design Join Date: Apr 2005 Location: SATX Posts: 14,146 OS: WinXP Pro SP3/Windows 7 RTM My System Blog Entries: 28	What aspect are you using? NTSC is 525x480, PAL is 725x480 (and please correct me if I am wrong, anyone.) Things like JPEG compression doesn't really show up if you keep at 80% or higher when compressing and is even less noticable on a TV set. I'd recommend using the RAW images while composing the film in order to avoid unneccessary compression of the stills. __________________ ----------------------------- There are no dumb questions, unless a customer is asking them. Help in the fight against cancer and other serious illnesses.

01-21-2006, 04:03 AM	#3 (permalink)
DavidThX Registered User Join Date: Dec 2005 Location: 94404 Posts: 8 OS: XP	Well since you asked, your slightly off. It's actually 640x480(out of 525 lines). The horizontal lines for NTSC is actually 525 lines, of which 480 contain picture information. The best way to explain it is this way: The size of a video image is measured in pixels for digital video or horizontal scan lines for analog video. Standard-definition television (SDTV) is specified as 640×480i60 for NTSC and 720×576i50 for PAL or SÉCAM resolution. New high-definition televisions (HDTV) are capable of resolutions up to 1920×1080p60, i.e. 1920 pixels per scan line by 1080 scan lines, progressive, at 60 frames per second. There can be some additional confusion in the horizontal-resolution specification. When refering to fixed-pixel displays or the resolutions of digital-television formats, the term "pixel" is correct. When refering to an analog television's horizontal resolution, the term "TV Line" (TVL) is more appropriate. This specification is the number of vertical lines the television can resolve per picture height. If the set is driven by a signal of closely spaced alternating black and white vertical lines, we count the number of visually resolvable lines to determine the set's horizontal resolution. Don't confuse these vertical lines with the horizontal scanning lines of a television. The number of horizontal lines is fixed at 480 in NTSC video, and can by 720 or 1080 in HDTV. (NTSC is actually 525 lines, of which 480 contain picture information. The other 45 lines are not displayed on the screen, and contain synchronization pulses, and information such as Closed Caption data.) The 480 lines you see are called active scan lines.