Batman Begins bitrate limited? - High-Def Digest Forums
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Old 02-15-2009, 12:00 AM
CXK CXK is offline
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Default Batman Begins bitrate limited?

I had this on HD-DVD, but i recently bought it on Blu-ray. I noticed even though its a TrueHD track it tops out at 1.5-2.0mbps when most movies show around 3-4mbps at any given point. Is this not a lossless track? It seems to sound fine, in some points it doesnt sound as good as I hoped. I cant really compare it to HD-DVD since i had the add on for xbox and wasnt hearing uncompressed anyway.
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Old 02-15-2009, 09:08 AM
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In a lossless track the bitrate has nothing to do with how good it sounds...it's not the same as with lossy compression where the lower the bitrate the worse it's likely to sound.
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Old 02-15-2009, 04:33 PM
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Originally Posted by CXK View Post
I had this on HD-DVD, but i recently bought it on Blu-ray. I noticed even though its a TrueHD track it tops out at 1.5-2.0mbps when most movies show around 3-4mbps at any given point. Is this not a lossless track? It seems to sound fine, in some points it doesnt sound as good as I hoped. I cant really compare it to HD-DVD since i had the add on for xbox and wasnt hearing uncompressed anyway.
CXK, you are not hearing things. Warner only uses DTHD 16-bit instead of the 24-bit. Even though Batman Begins and Dark Knight sounded good, they both could of sounded better with an 24-bit audio encode.
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Old 02-15-2009, 06:10 PM
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Originally Posted by bases1616 View Post
CXK, you are not hearing things. Warner only uses DTHD 16-bit instead of the 24-bit. Even though Batman Begins and Dark Knight sounded good, they both could of sounded better with an 24-bit audio encode.
I sincerely doubt that. In a 24 bit movie soundtrack you're not going to find more than 16 bits of real detail anyway. The extra 8 bits are generally just random noise which is difficult to compress and is inaudible anyway. As long as it's done right there should be no loss in quality.
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Old 02-15-2009, 08:09 PM
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I will be importing Terminator Salvation from UK when it comes out on Blu-ray, because Sony has the publishing rights for that region. Sony will most likely encode it in 24 bit TrueHD track instead of Warner's lame 16 bit track.
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Old 02-15-2009, 08:53 PM
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I will be importing Terminator Salvation from UK when it comes out on Blu-ray, because Sony has the publishing rights for that region. Sony will most likely encode it in 24 bit TrueHD track instead of Warner's lame 16 bit track.
Me too, sound makes a big difference and if you have paid a lot for home theatre speakers getting limited by some poor encoding is just crap.
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Old 02-16-2009, 01:29 AM
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Um... Can anybody make a list of equipment that can even resolve 24/48 audio? Or even 18 bit for that matter?
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Old 02-16-2009, 09:38 AM
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I sincerely doubt that. In a 24 bit movie soundtrack you're not going to find more than 16 bits of real detail anyway. The extra 8 bits are generally just random noise which is difficult to compress and is inaudible anyway. As long as it's done right there should be no loss in quality.
If you don't believe me listen to the DTHD tracks that have 24-bit and the DTS-HD MA that all have 24-bit and then come talk to me. Some good examples Transformers(DTHD 24-bit), Kung Fu Panda(DTHD 24-bit), The Incredible Hulk(DTS-HD MA 24-bit), Wanted(DTS-HD MA 24-bit), and Hellboy II(DTS-HD MA 24-bit) are just a few. All these movies sound great. Can you imagine if Batman Begins and Dark Knight both had DTS-HD MA 24-bit audio tracks. It would sound insane.

Warner has been very stingy on the audio packages and has not used the full potential of HD audio. They have even left lossless audio off some of there major hit movies like Speed Racer and Journey to the Center of the Earth.
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Old 02-16-2009, 12:09 PM
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If you want a good comparison on the same disc try Spider-man 3. PCM at 16 bit & Dolby TrueHD at 24 bit.

The 24 bit clearly sounds better with what I have in my system & is noted as such on the review on this site.
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Old 02-16-2009, 12:41 PM
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Quote:
Originally Posted by bases1616 View Post
CXK, you are not hearing things. Warner only uses DTHD 16-bit instead of the 24-bit. Even though Batman Begins and Dark Knight sounded good, they both could of sounded better with an 24-bit audio encode.
That is not always true. If the movie was originally mastered with a 16bit track a 24bit track would most likely just add additional noise. In essence, in some cases, a 16bit track may be preferred to a 24bit track. There has been huge discussions on this at AVS amongst the audio experts.

I am not sure if this movie was mastered with a 24bit track or not, but I do know that TDK was mastered with a 24 bit track and Warner chose to use downconverted masters on the film (16bit). I have no idea why Warner did this.
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