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Nature Library Video Standards
Affordable Digital Stock Footage for the Entire Online Community
VIDEO STANDARDS AND SPECIFICATIONS
As you may or may not be aware, the world has three main television broadcast standards and depending on which country you live in, you're familiar with at least one of them. In no particular order they are SECAM, PAL and NTSC. The problem is that none of the three are compatible. Nature Library shoots and their footage in the NTSC format.
The three charts below give specific technical breakdown for each standard.
NTSC
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The first colour TV broadcast system was implemented in the United States in 1953.
This was based on the NTSC ( N ational T elevision S ystem C ommittee) standard.
NTSC is used by the US, Canada, Japan and others. NTSC runs on 525 lines/frame.
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| SYSTEM (spec) |
NTSC M |
| Lines/Field |
525/60 |
| Horizantal Frequency |
15.734 kHz |
| Vertical Frequency |
60 Hz |
| Colour Subcarrier Frequency |
3.579545 mHz |
| Video Bandwidth |
4.2 mHz |
| Sound Carrier |
4.5 mHz |
PAL
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The PAL (Phase Alternating Line) standard was introduced in the early 1960's and
implemented in most countries except for France.European The PAL standard utilises a wider
channel bandwidth than NTSC which allows for better picture quality. PAL runs on 625 lines/frame.
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| SYSTEM |
PAL B,G,H |
PAL I |
PAL D |
PAL N |
PAL M |
| Line/Field |
625/50 |
625/50 |
625/50 |
625/50 |
525/60 |
| Horizontal Frequency |
15.625 kHz |
15.625 kHz |
15.625 kHz |
15.625 kHz |
15.750 kHz |
| Vertical Frequency |
50 Hz |
50 Hz |
50 Hz |
50 Hz |
60 Hz |
| Colour Sub Carrier Frequency |
4.433618 MHz |
4.433618 MHz |
4.433618 MHz |
3.582056 MHz |
3.575611 MHz |
| Video Bandwidth |
5.0 MHz |
5.5 MHz |
6.0 MHz |
4.2 MHz |
4.2 MHz |
| Sound Carrier |
5.5 MHz |
6.0 MHz |
6.5 MHz |
4.5 MHz |
4.5 MHz |
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SECAM
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SECAM ( S
equential C
ouleur A
vec M
emoire or S
equential C
olour with M emory) was
introduced in the early 1960's and implemented in France. SECAM uses the same bandwidth as
PAL but transmits the color information sequentially. SECAM runs on 625 lines/frame.
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| SYSTEM |
SECAM B,G,H |
SECAM D,K,K1,L |
| Line/Field |
625/50 |
625/50 |
| Horizontal Frequency |
15.625 kHz |
15.625 kHz |
| Vertical Frequency |
50 Hz |
50 Hz |
| Video Bandwidth |
5.0 MHz |
6.0 MHz |
| Sound Carrier |
5.5 MHz |
6.5 MHz |
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Nature Video, Royalty Free Stock Footage
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Come on inside and have a look around. The video clip you see playing above represents a sample of the stock footage Nature Library has available
Our collection of footage grows with time so if you do not see what you are looking for, please do check back from time to time and have another look.
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Free Video Downloads:
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Nature Library is offering a FREE clip every couple of weeks. These stock footage video clips are available for immediate download. Follow this link for your FREE download.
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| New Additions: |
Added Galapagos stock footage from partner videographer Carlo Ferraro.
Added Amazon stock footage from partner videographer Carlo Ferraro.
Stabilizing video clips & why it's a good thing. Learn more..
How to Download QuickTime Movies from your web browser.
Learn more..
Added Antarctica footage with video clips of Orca Whales, Emperor Penguins and icebergs. Have a look. |
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Total Clips in Database: 666
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