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Comments on the review from 12 Aug 2007


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Showing 1-2 of 2 posts in this discussion
Initial post: 26 Aug 2007 09:39:14 BDT
Last edited by the author on 27 Oct 2008 00:50:57 GMT
T. Wei says:
[These comments were originally posted before Amazon introduced the 'comment' feature immediately underneath a review. The post has been edited after product release with updated information.]

There are two technical issues to be aware of.

(1). 24p output from the player doesn't necessarily mean judder free.

According to various sources on the internet, Planet Earth was shot mostly using different HD video cameras and some on film using different framerates: including 25fps but some also at higher framerates. This UK Blu-ray IS "1080/24p", as indicated by my Pioneer BD player. The production is mastered in 25p from various framerates according to bbcresources.com; the PAL DVD is in 50i (equivalent to 25p) and each episode lasts for 48 minutes compared to 50 minutes on Blu-ray. So the Blu-ray is in keeping with a 25p to 24p slowdown.

Having a direct 24fps output from the player to a display (which needs to accept 24fps and displays at a framerate at a multiple of 24) would not necessarily result in a completely judder free picture. It would eliminate 3:2 judder from 24fps to 60i or 60p pull-down only and would not apply to material originally shot in other framerates. It alone still would not completely eliminate the slow strobing motion judder in fast panning shots.

(2). 1080p format doesn't necessarily mean everything is in high definition.

Some of the material wasn't shot in HD and some of the HD shots have various artefacts due to particular limitations during filming and compression, so even the disc format is 1080p it doesn't mean everything is always HD or pristine. The much discussed posterization issue (not certain if it's VC-1 codec related per se or present in the source) also exists in the UK version, in keeping with the fact that it is the same transfer as the US Warner version.

In reply to an earlier post on 13 Nov 2007 18:31:35 GMT
[Deleted by the author on 13 Nov 2007 18:32:47 GMT]
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Initial post:  26 Aug 2007
Latest post:  13 Nov 2007

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