Playstation 3 for 104% 25fps Blu-ray playback petition : Please sign!!! - Blu-ray Forum

richieb1971 · 06-09-2008, 03:35 PM

DVD's are completely different since they were designed for SDTV. A DVD works like this.

On NTSC (USA/Japan etc) players/discs the movie would run at 60hz. Since SDTV (480i) requires interlacing you would have odd frames alternate to the tune of 2.5 frames per second. 2.5x24 = 60

In 480p mode DVD's use 3:2 pulldown. Meaning each odd frame is shown 3 times and each even frame shown twice. 2x12 = 24, 3x12 =36, 36 + 24 = 60.

With PAL regions, the print of movie reel was scanned at 25fps, they just sped up the spool so that 25fps passed each second.

With Blu-ray, all material is produced with 60hz in mind. All HDTV's globally have accounted for this. But if you have a 50hz SDTV, well 24 doesn't fit into 50. So a pseudo algorithm is used somehow causing a side effect of the original footage.

The only way to get round this is to speed up the original 24fps transfer to 25fps like the DVD. Personally I don't see the point in it much since there is only 68 signatures showing how minute the % of people is that use that technology with a PS3.

The OP says 120hz costs £1500. I bought my TV for £750 10 months ago. The Sony KDL40D3000(U) and it does 120hz perfectly with full 24p support. I am sure Sony isn't the cheapest either. You could probably knock another £200 by buying a Samsung with the same features. That puts you right in PS3 pricing territory. Which means, upgrade your TV.

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06-09-2008, 03:35 PM	#15
richieb1971 Blu-ray Samurai Top contributor Member since:Aug 2007 4K collection:89 Blu-ray collection:706 Trading Score:16	DVD's are completely different since they were designed for SDTV. A DVD works like this. On NTSC (USA/Japan etc) players/discs the movie would run at 60hz. Since SDTV (480i) requires interlacing you would have odd frames alternate to the tune of 2.5 frames per second. 2.5x24 = 60 In 480p mode DVD's use 3:2 pulldown. Meaning each odd frame is shown 3 times and each even frame shown twice. 2x12 = 24, 3x12 =36, 36 + 24 = 60. With PAL regions, the print of movie reel was scanned at 25fps, they just sped up the spool so that 25fps passed each second. With Blu-ray, all material is produced with 60hz in mind. All HDTV's globally have accounted for this. But if you have a 50hz SDTV, well 24 doesn't fit into 50. So a pseudo algorithm is used somehow causing a side effect of the original footage. The only way to get round this is to speed up the original 24fps transfer to 25fps like the DVD. Personally I don't see the point in it much since there is only 68 signatures showing how minute the % of people is that use that technology with a PS3. The OP says 120hz costs £1500. I bought my TV for £750 10 months ago. The Sony KDL40D3000(U) and it does 120hz perfectly with full 24p support. I am sure Sony isn't the cheapest either. You could probably knock another £200 by buying a Samsung with the same features. That puts you right in PS3 pricing territory. Which means, upgrade your TV.

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