Monday, February 1, 2010

Rate My Vaginia What Does “data Rate” Means In Digital Camera Video Recording?

What does "data rate" means in digital camera video recording? - rate my vaginia

My Canon SX100 IS digital camera offers two options for video recording.

1. Normal Mode
2. LP mode

LP mode, you can record video, two times longer than normal.

I took the path and found the following information when I checked the properties of the video files.

Normal: 14884kbps Data Rate
LP mode: Data Rate 7384kbps

Low quality video data rate not higher data rate then?

2 comments:

Hazydave said...

Data Rate (or Bit Rate) is the recording speed ... Basically, the amount of data is used to represent the video. So yes, if you drop half of the amount of information that has something to suffer.

There are points ahead requires a trained eye to notice, to the difference ... Tape recordings of consumers to 25MB / s to lose some of Use Top Pro Go to 50MB / s or 100Mb / s, but much to the average viewer.

However, when they improve a different configuration camcorder / camera with video capabilities have, do you think you will see the difference. Sometimes the lower video modes also to a lower resolution, sometimes not.

Consider the Canon SX100. Your best method of recording video is a 640x480 resolution at 30 progressive frames per second, with a little information on conventional DV camcorders. Save: Motion-JPEG format, which is essentially the same as the DV format, and uses only slightly more than half the data rate (14.8MB / s above 25 Mbit / s) .. You will see more compressionSion artifacts in high-quality video, at least in some things from a DV camcorder. Of course, you have a very good goal, good sensor, etc., etc. A lot of things you can not see a big difference compared to a "real" video camera, but the potential is there.

So, now file for the LP mode ... more than half the speed ... could look like that .. ugly, the same information twice compression. It depends a bit on what to shoot you, but they are at this level most people the difference, not something at the expert level is only about yer away.

Brian D said...

While in some cases, the untrained eye will not be able to reserve the decline in quality. You may really only the video quality when you are deff on a TV high.

Post a Comment