A mb is a measure of volume data storage. A second is a measure of time. It could be a fraction of an angle but that is unlikely in this context).
An mb and second measure different things and, according to the basic principles of dimensional analysis, conversion from one to the other is not valid. 1 mb will hold a much longer time's worth of low quality audio than it will a high quality video.
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One megabyte can hold one minute of low quality MP3 music that is compressed at 128 kbit/s. On a CD, each megabyte holds about six seconds of music.
About 500 Mb in reasonable quality video.
Kigabyte is a misspelling of gigabyte, and a kigabyte is what some people think a kilobyte is (see question: "What is a kigabyte"). Because you said how many kigabyte are in a migabyte (a misspelling of megabyte), I think the question you are asking is how many kilobytes are in a megabyte. The answer to that is below. 1024 kilobytes = 1 megabyte (1024 kb = 1 mb)
The concept of converting data storage (megabytes) to time (minutes) is not straightforward as it depends on the type of data being measured. If we assume an average data transfer rate of 1 megabyte per second, then 25 megabytes would take approximately 25 seconds to transfer. However, if we consider streaming video content, which typically uses around 5 megabytes per minute, then 25 megabytes would equate to about 5 minutes of video playback.
Depends - 2054 megabytes of what? - 1 minute of MP3 music in a fairly high quality takes about 1 MB, but the amount of MB/minute can really vary a lot. A minute of a DVD-quality movie takes up much more space than that.