Wednesday, April 9, 2014

Is a 18 megapixel video camera good for shooting quality short films?




TWB





Answer
Megapixels are used for measuring digital still image resolution, not video. Video resolution is measured using Horizontal line count and video quality is based on the amount of compression used.

Standard definition video = 480 horizontal lines.
High definition video = 720 or 1080 horizontal lines.

640 x 480 = standard definition video @ 4:3 aspect ratio = 307,200 pixels or about 0.3 megapixel.

1280 x 720 = high definition video @ 16:9 (widescreen) aspect ratio = 921,600 pixels or almost 1 megapixel.

1920 x 1080 = high definition video @ 16:9 (widescreen) aspect ratio = 2,073,600 pixels or about 2 megapixels.

The *QUALITY* of the video depends on the above AND the amount of compression applied to the video when it is captured and stored.

LOTS of compression = lots of discarded video data = lower video quality.
Less compression = less discarded video data and higher video quality.

Even "ultra high definition" video is referred to as "4k video".

Since we don't know which camera you have or what its video capabilities are, we have no way to know what sort of quality you'll get.

Tips:
1) Use LOTS of light when capturing video. Indoors, that means adding LOTS of light.

2) Use a tripod or other steadying device. Don't capture video handheld.

3) Don't expect good quality capture of REALLY LOUD or really low audio. Normal levels will be fine.

4) Get the camcorder close to where the people are speaking. If that is not possible, use an audio recorder (like a Zoom H1, or H2) and synch the audio later or use an external mic connected to the camcorder.

What to look for:

LARGE lens filter diameter (70mm or larger for your project.)
LARGE imaging chip system. 1/3 inch 3CCD or 1/3 inch 3CMOS.
Mic jack (XLR is best if using built-in audio capture)
Mics (wireless would be best - I like Sennheiser G3 with a portable base station - but they are pricey.)

is 3.2 megapixels video camera too bad quality?




Sara





Answer
Megapixels are used for measuring digital still image resolution.

Horizontal line count is used for measuring video resolution.
Standard definition video = 480 horizontal lines.
High definition video = 720 or 1080 horizontal lines.

640 x 480 = standard definition video @ 4:3 aspect ratio = 307,200 pixels or about 0.3 megapixel.

1280 x 720 = high definition video @ 16:9 (widescreen) aspect ratio = 921,600 pixels or almost 1 megapixel.

1920 x 1080 = high definition video @ 16:9 (widescreen) aspect ratio = 2,073,600 pixels or about 2 megapixels.

The *QUALITY* of the video depends on the above AND the amount of compression applied to the video when it is captured and stored.

LOTS of compression = lots of discarded video data = lower video quality.
Less compression = less discarded video data and higher video quality.

We don't know what video camera you are referring to. Technically, the 3.2 megapixel count video might be OK if the video compression is low.




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