I am a bit confused with certain software bitrate measurements. For example:
If a convert a video with Hybrid with say 1536 kbit/s Mediainfo tells me the bitrate is 1536 kb/s.
If a convert a video with Handbrake with say 1536 kbps Mediainfo tells me the bitrate is 1536 kb/s.
The difference being that Hybrid seems to use kilobit while Handbrake seems to use kilobytes and MediaInfo is saying 1536 kb/s
for both while they seem to use different measurement.
What I am most interested in is kbps. Also I was wondering if there were any free offline data size measurement tools.
Can someone please explain what is going on here? Thanks.
Try StreamFab Downloader and download from Netflix, Amazon, Youtube! Or Try DVDFab and copy Blu-rays! or rip iTunes movies!
+ Reply to Thread
Results 1 to 9 of 9
Thread
-
Last edited by 60fpshacksrock; 1st Apr 2021 at 10:27.
-
Unfortunately, the usage of kb/s varies. It may men kilo bytes per second or kilo bits per second. You just need keep track of which each package uses. Personally, I use B for Byte and b for bit. But that's not universal.
And the "kilo" may mean 1000 or 1024 (aka kibi). https://en.wikipedia.org/wiki/Binary_prefix Again, you just have to keep track of which the program uses. -
Video bit rates are usually messured in kilo (= 1000) bit per second.
(note that unlike streams, file size is usually measured with kilo (= 1024))
kb is usually kilo (=1000) bit (used for data rates)
where as
KB is usually kilo (= 1024) byte (used for file sizes)
-> What makes you thing Handbrake uses kilo bytes/s instead of the usual kilo bit/s ?
Cu Selurusers currently on my ignore list: deadrats, Stears555 -
Everything said here already Selur just leaves out the option kB which should then be 1000Bytes (data rate again, not used for file Size).
In Mediainfo's advanced output for example (-f on the commandline or Debug->Advanced+Debug->0 in GUI), we can access different representations of the values. I use this method to be sure to always retrieve the same representation programatically.
Bit rate : 4608000
Bit rate : 4 608 kb/s -
okay,..
to sum it up:
kbps stands for kilo (=1000) bit per second
kBps stands for kilo (=1000) byte per second
Kbps stands for kilo (=1024) bit per second
KBps stands for kilo (=1024) byte per second
Cu Selurusers currently on my ignore list: deadrats, Stears555 -
-
It used to be worse, but things seem to have standardized.
Rules of thumb:
BIG "B" = Bytes
little "b" = bits
If dealing with data rates, kilo/mega/etc almost always has meant base1000 (aka 10^3), unless otherwise specified.
If dealing with storage space, kilo/mega/etc almost always meant base1024 (aka 2^10), unless otherwise specified, though this was not always true*. (Quoted numbers will be smaller than if per the other kilo.)
It would be really nice if everyone got on board with SI standard: kilo (1st) vs kibi (2nd).
Once you know the difference, and why/how it came about (*non-science types doing marketing for science folks - they cheated on that storage space thing, surprise surprise), it is fairly straightforwards to use a simple calculator (drill down to basic bits and then build back up again in proper format) if you aren't sure or if you don't have a custom converting calc.
referring to the orginal post: Hybrid & Handbrake & MediaInfo are all referring to the same "kilobits per second", even if the abbreviations are different. (base1000)
ScottLast edited by Cornucopia; 1st Apr 2021 at 13:11.
Similar Threads
-
VSDC video editing software questions
By fred17 in forum Newbie / General discussionsReplies: 12Last Post: 14th Mar 2020, 21:56 -
Questions regarding TBC, audio/video sync drift and software Read more: ht
By Firewing in forum Newbie / General discussionsReplies: 4Last Post: 1st Nov 2019, 14:49 -
720p video recording at same bitrate as 1080p video.
By ShadowWizard in forum Camcorders (DV/HDV/AVCHD/HD)Replies: 8Last Post: 18th Jun 2017, 20:35 -
A few questions about DVD burning software
By rrtbusa in forum Authoring (DVD)Replies: 1Last Post: 14th May 2017, 09:01 -
General questions about video screen capture pay software
By jimdagys in forum Video Streaming DownloadingReplies: 1Last Post: 25th Dec 2016, 00:45