Originally posted by DeafRaz
if it s bird how it disappeared?
The video resolution is poor. Even in hi-res, the object was pixelated. As the object (bird) moved away from the camera and appeared to get smaller
(from the point of view of the camera), video compression algorithms would have eventually tried to plaster "sky" over the small dark pixel of
"bird"...
...especially considering the camera and bird were both moving. The video compression (the act of making the file size smaller) works by interlacing
the frames. For example...If frame number "12" is very similar to Frame number "11", then the compression algorithm borrows as much from that
previous frame as possible, so frame number 12 can be stored with much fewer bytes, as long as the playback software knows to look to frame 11 for
additional information.
Considering that's how video compression works, it is easy to see how a low-res (highly compressed) video could lose details from the actual scene.
Those details are lost to compression. As the bird flew off, it became just a tiny detail in later frames, and was ignored, replaced with pixels of
sky from previous frames.
edit on 1/5/2013 by Soylent Green Is People because: (no reason given)