50 Mbit/s? - Blu-ray Forum

Beta-guy · 12-30-2007, 06:01 AM

I've notice on both POTC:AWE and The day after tomorrow that it actually hit 50 Mbit/s how is this possible? I thought the limit of Blu-ray was 48 MBit/s...

sj001 · 12-30-2007, 06:02 AM

Quote:

Originally Posted by Beta-guy

I've notice on both POTC:AWE and The day after tomorrow that it actually hit 50 Mbit/s how is this possible? I thought the limit of Blu-ray was 48 MBit/s...

Yeah, I've noticed this with Nature's Journey... I think the Bitrate meter for the PS3 is not perfectly accurate, as it the limit IS 48Mbps.

Verbal · 12-30-2007, 06:34 AM

Quote:

Originally Posted by sj001

Yeah, I've noticed this with Nature's Journey... I think the Bitrate meter for the PS3 is not perfectly accurate, as it the limit IS 48Mbps.

As I understand it, Blu-ray is capable of video bursts of well above 40mbps (the other 8 are reserved for audio data). That might account for the metering.

Neo65 · 12-30-2007, 01:36 PM

If the audio instantaneous bitrate is lower, a 50Mbps segment is possible. There is a clip (Elephant Dreams from MSFT) where 12 seconds was consistently averaging 50Mbps continuously. The audio was merely 256kbps. That clip plays on a PS3 if you put it on a 8X DVD-R media in BDMV/AVCHD format.

kx11 · 12-30-2007, 04:04 PM

i didn't notice POC:AWE reaching 50mbps or above 35mbps

soniqstylz · 12-30-2007, 04:49 PM

Quote:

Originally Posted by kx11

i didn't notice POC:AWE reaching 50mbps or above 35mbps

I know for a fact in a couple of scenes it runs around 41+.

sj001 · 12-30-2007, 04:51 PM

I actually have quite a few movies that show the video exceeding 40Mbps... I watched Cast Away the other night, and that certainly was over that almost on a regular basis.

buckshot · 12-30-2007, 04:51 PM

https://forum.blu-ray.com/showthread.php?t=3338&page=6

MacHaggis · 12-30-2007, 10:47 PM

I've also seen the video bitrate peak at 50 Mbps on the remastered version of The Fifth Element, and others that I can't recall the names to.

Many times, well over 40 Mbps...

Bogdan

Neo65 · 12-31-2007, 12:33 AM

Quote:

Originally Posted by MacHaggis

I've also seen the video bitrate peak at 50 Mbps on the remastered version of The Fifth Element, and others that I can't recall the names to.

Many times, well over 40 Mbps...

Bogdan

A second doesn't count as there is a buffer so a 1/2 secs of video using up 25Mb (= 50Mbps) is within specs if the last 1/2s is 15Mb (=30Mbps).

12-30-2007, 06:01 AM	#1
Beta-guy Expert Member Member since:Jul 2007 Blu-ray collection:23 Blu-ray reviews:1	50 Mbit/s? I've notice on both POTC:AWE and The day after tomorrow that it actually hit 50 Mbit/s how is this possible? I thought the limit of Blu-ray was 48 MBit/s...

12-30-2007, 01:36 PM	#4
Neo65 Senior Member Member since:Sep 2007	If the audio instantaneous bitrate is lower, a 50Mbps segment is possible. There is a clip (Elephant Dreams from MSFT) where 12 seconds was consistently averaging 50Mbps continuously. The audio was merely 256kbps. That clip plays on a PS3 if you put it on a 8X DVD-R media in BDMV/AVCHD format.

12-30-2007, 04:04 PM	#5
kx11 Special Member Member since:Aug 2007 Blu-ray collection:28	i didn't notice POC:AWE reaching 50mbps or above 35mbps

12-30-2007, 04:51 PM	#7
sj001 Blu-ray Samurai Member since:Aug 2007 Location:Rochester, NY Blu-ray collection:317 DVD collection:17 Trading Score:5	I actually have quite a few movies that show the video exceeding 40Mbps... I watched Cast Away the other night, and that certainly was over that almost on a regular basis.

12-30-2007, 04:51 PM	#8
buckshot Blu-ray Guru Member since:Feb 2007 Location:san die ego Blu-ray reviews:2 Trading Score:9	https://forum.blu-ray.com/showthread.php?t=3338&page=6

12-30-2007, 10:47 PM	#9
MacHaggis Active Member Member since:Aug 2007 Location:Burbank, CA Blu-ray collection:102	I've also seen the video bitrate peak at 50 Mbps on the remastered version of The Fifth Element, and others that I can't recall the names to. Many times, well over 40 Mbps... Bogdan

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