Use some logic please?
kbps = kilobit(s) per second
1 kilobit = 1000 bits
1 byte = 8 bits
1 megabyte = 1024 kilobytes
1 kilobyte = 1024 bytes
1 hour = 60 minutes
1 minute = 60 seconds
Say you want to encode a 25 minutes video at 175 MB,
175 megabytes in 25 minutes…
179200 kilobytes in 1500 seconds…
119.467 kilobytes for every seconds… (aka KB/s)
955.733 kilobits per second… for video, audio, overheads, etc.
Say the audio is about 128 kbps
Then the video = 955.733 – 128 – extras = 827.733 – extras = about 800 kbps.
Why someone need help calculating it, is beyond me.