Blu-ray/DVD -- Timing mismatch? - Blu-ray Forum

Acid · 09-27-2006, 05:07 AM

If you've got two separate TVs, a DVD player and a Blu-ray player, and DVD/Blu-ray versions of the same title, is it possible to have both setups running side-by-side in sync for comparison purposes?

I've been told that you simply can't do this because one of the formats is "slower" than the other (i've also seen a demo whereby the comparison between the two formats isn't running in sync).

Anyone know?

Blue · 09-27-2006, 02:13 PM

Yes and No.
You are quite correct DVD and Blu Ray won't sync if the source is a movie from film. All modern movies are 24 fps, TV and hence DVD are either 25 fps (50 interlaced) mainly PAL or 30 fps (60 fps) actually marginally less 29.95 or thereabouts and is NTSC.
With PAL they normally speed up the film to 25 fps. So a 100 min film in the cinema will be 96min on DVD.
NTSC they drop repeat frames (simplified explanation for those ready to jump at me) in every so often to equal 30 fps, again this not exact.
Blu Ray will play a 24 fps movie at 24 fps
Blu Ray and DVD will Sync perfectly if the original is video matching the native DVD standard. DVD players will do funny things to convert between PAL and NTSC.

Welcome, you will enjoy it here. This is a unique place in cyberspace, there are a lot of very smart people here and everyone gets on very well together - most of the time. Feel free to ask anything, within the relms of this forum, or add your views.

09-27-2006, 05:07 AM	#1
Acid New Member Member since:Sep 2006	Blu-ray/DVD -- Timing mismatch? If you've got two separate TVs, a DVD player and a Blu-ray player, and DVD/Blu-ray versions of the same title, is it possible to have both setups running side-by-side in sync for comparison purposes? I've been told that you simply can't do this because one of the formats is "slower" than the other (i've also seen a demo whereby the comparison between the two formats isn't running in sync). Anyone know?

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09-27-2006, 02:13 PM	#2
Blue Super Moderator Top contributor Member since:Jan 2005 Location:Melbourne Australia Blu-ray collection:206	Yes and No. You are quite correct DVD and Blu Ray won't sync if the source is a movie from film. All modern movies are 24 fps, TV and hence DVD are either 25 fps (50 interlaced) mainly PAL or 30 fps (60 fps) actually marginally less 29.95 or thereabouts and is NTSC. With PAL they normally speed up the film to 25 fps. So a 100 min film in the cinema will be 96min on DVD. NTSC they drop repeat frames (simplified explanation for those ready to jump at me) in every so often to equal 30 fps, again this not exact. Blu Ray will play a 24 fps movie at 24 fps Blu Ray and DVD will Sync perfectly if the original is video matching the native DVD standard. DVD players will do funny things to convert between PAL and NTSC. Welcome, you will enjoy it here. This is a unique place in cyberspace, there are a lot of very smart people here and everyone gets on very well together - most of the time. Feel free to ask anything, within the relms of this forum, or add your views.

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