what is the average file size of a blu ray movie (in gb)?

stripped down to just the movie itself, with only english subtitles but no others, and only english audio?

i recently downloaded a 16.88 gb 1080p movie. it came with multiple audio and subtitles. does this increase the filesize, thus making the film run slower? i am using windows xp.

is there a difference between regular blu ray and 'proper' blu ray?

any help anyone can give me here is much appreciated, cheers.


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all i know is 1hr 30min - 2hr movies are like 1-2gb i may be wrong but thats how much alot of them were


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10-20 gb.

single layer blu-ray disks hold 25 gb (and double layer hold 50 gb), but many disks contain a lot of files for extras, uncompressed audio, extra languages, etc.

i don't know what you mean by ''''''regular blu-ray'''''' and ''''''proper'''''' blu-ray. all blu-ray disks are proper (otherwise it isn't blu-ray). you may mean rental only versions vs retail versions ... the former come without the extras so take up less space.


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the length of movies varies widely, which directly affects the amount of storage space a movie will occupy. combined with the additional variables from which one may choose to encode movies on blu-ray disc (bd) read-only, or bd-rom, specifying a single number wouldn't really amount to much. you would be far better served if you used the total average bit-rate for the bd compliant audio and video codecs that are of interest to you. this would provide you with a much more accurate average bit-rate from which you could derive a more meaningful storage capacity requirement based on a specific or average movie run-time. the resources below should easily help you find the information you want.

for whatever good it may serve, using microsoft excel and cinema squid's latest tab-delimited list¹ of 4296 blu-ray disc movie specs, and neglecting specific codecs as well as the number of channels in the main audio track, i calculated an overall average movie size of 27,160,566,253 bytes and an overall average combined (audio and video) bit-rate of 31.453675 megabits per second (mbps). (to convert bytes to gigabytes use 1,073,741,824 bytes = 1 gb.)

q: “i recently downloaded a 16.88 gb 1080p movie. it came with multiple audio and subtitles. does this increase the filesize, thus making the film run slower?�

a: the file size or the number of audio streams has no bearing on the encoded frame-rate of the movie.
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resources

cinema squid blu-ray movie database
http://www.cinemasquid.com
– ¹[zip] tab-delimited list of blu-ray disc movie specs
http://media.cinemasquid.com/blu-ray/blu-specs.zip

new unofficial blu-ray audio and video specifications thread
http://www.avsforum.com/avs-vb/showthread.php?t=1155731&pp=60

bdinfo - blu-ray disc video and audio analysis tool
http://www.cinemasquid.com/blu-ray/tools/bdinfo

why are the lord of the rings extended blu-rays on multiple discs?
http://answers.yahoo.com/question/index?qid=20110717151301aaeoukz

wiki: blu-ray disc
http://en.wikipedia.org/wiki/blu-ray_disc

publicly available international standards
http://standards.iso.org/ittf/publiclyavailablestandards/index.html


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