DVD (SD) Vs. Blu-Ray (HD) Runtimes & Video Formats
By Paul Rudoff on Jan. 1, 1999 at 10:04 PM in Miscellaneous
The following was written by Amazon user Interzone_Records on January 22, 2011 in regards to a review that was posted for the Angelina Jolie film "Salt". I found the information so informative, that I thought it best to archive a copy here.
I rented the standard disc [of the Angelina Jolie film "Salt"] from Netflix. It contains all three versions, but the times are nowhere near what Senor Zoidbergo mentions in his review. This is probably due to the difference in the encoding speed of Blu-Ray, which runs at 24 frames per second, and NTSC format, which runs at 29.97 frames per second. The difference between the PAL and NTSC versions of films is 4%. So the speed difference between the US NTSC standard DVD format and the Blu-Ray is probably closer to 5%.
On the standard[-definition] U.S. [DVD], the actual times are:
Theatrical Version: 1:39:56
Unrated Extended Cut: 1:40:58
Unrated Director's Cut: 1:43:59
Senor Zoidbergo lists the following times for the three versions on the Blu-Ray disc
Theatrical: 1:35:54
Extended: 1:36:56
Director's Cut: 1:39:48
This is a difference of about 4 minutes on each version. Some time ago, I asked the owner of the Masters of Cinema label, in England (the UK equivalent of a Criterion specialty label), about the difference between NTSC and PAL and Blu-Ray. Here is his reply:
"The encoding format of HD material on Blu-ray has nothing to do with either PAL or NTSC. The 'problem' of these two competing DVD formats (NTSC and PAL) evaporates with Blu-ray, where the HD material is in 1080p resolution at 24 frames per second, not the standard definition 480p (NTSC 29.97fps) or 576p (PAL 25fps) resolution of "old TV".
In this respect, because of the increased resolution of 1080p HD Blu-rays *and* the fact that the material is now running at 24 frames per second (the exact same speed as film projected in a cinema) - Blu-ray is a stunning global format in which to view films as they should be seen.
Confusingly, a Blu-ray can also hold standard definition PAL or NTSC format encodes as well, but this will look exactly the same as it would on a DVD disc. It will remain standard definition. Thankfully, Blu-rays are being used to hold HD 1080p material, rather than as repositories for huge amounts of standard definition DVD footage."
I rented the standard disc [of the Angelina Jolie film "Salt"] from Netflix. It contains all three versions, but the times are nowhere near what Senor Zoidbergo mentions in his review. This is probably due to the difference in the encoding speed of Blu-Ray, which runs at 24 frames per second, and NTSC format, which runs at 29.97 frames per second. The difference between the PAL and NTSC versions of films is 4%. So the speed difference between the US NTSC standard DVD format and the Blu-Ray is probably closer to 5%.
On the standard[-definition] U.S. [DVD], the actual times are:
Theatrical Version: 1:39:56
Unrated Extended Cut: 1:40:58
Unrated Director's Cut: 1:43:59
Senor Zoidbergo lists the following times for the three versions on the Blu-Ray disc
Theatrical: 1:35:54
Extended: 1:36:56
Director's Cut: 1:39:48
This is a difference of about 4 minutes on each version. Some time ago, I asked the owner of the Masters of Cinema label, in England (the UK equivalent of a Criterion specialty label), about the difference between NTSC and PAL and Blu-Ray. Here is his reply:
"The encoding format of HD material on Blu-ray has nothing to do with either PAL or NTSC. The 'problem' of these two competing DVD formats (NTSC and PAL) evaporates with Blu-ray, where the HD material is in 1080p resolution at 24 frames per second, not the standard definition 480p (NTSC 29.97fps) or 576p (PAL 25fps) resolution of "old TV".
In this respect, because of the increased resolution of 1080p HD Blu-rays *and* the fact that the material is now running at 24 frames per second (the exact same speed as film projected in a cinema) - Blu-ray is a stunning global format in which to view films as they should be seen.
Confusingly, a Blu-ray can also hold standard definition PAL or NTSC format encodes as well, but this will look exactly the same as it would on a DVD disc. It will remain standard definition. Thankfully, Blu-rays are being used to hold HD 1080p material, rather than as repositories for huge amounts of standard definition DVD footage."
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