hvx and 1080

[Barry Green]

Yes it will be real progressive, and it will be handled the same way as 24p and 25p are handled on the DVX and SDX and SPX cameras. You’ll get genuine 1080/24p carried within a 1080/60i stream, or 1080/25p carried within a 1080/50i data stream.

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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a)

[Jean-yves Le moine]

so are you agree with the fact that the pal camera for europe wil be better than the US camera because the 1080p25 wil be really 1440X1080 on P2 contrary to 1080p24 who will be really 1280×1080 ?

jean-yves le moine

temps r

[Barry Green]

I agree that the PAL version will be better for European and other PAL users.

I don’t think it’s overall “better” because:

a) I don’t know for sure that 50i DVCPRO-HD is actually 1440×1080; I haven’t been able to get any confirmation on that.

b) 24p is better for American/ATSC broadcasts, and film transfers, than 25p is. 25p is ideal for European uses, not ideal for American/NTSC/ATSC uses. Obviously the 50i version would be better for European users.

c) even if the European version turns out to be 1440 instead of 1280, you’ll have fewer overall frames (which would be where the tradeoff comes in; more pixels in fewer frames vs. more frames with fewer pixels.) It’s not “better”, it’s different.

There was much hullabaloo over whether the Z1 was “better” in 50i mode than in 60i, since the data rate was constant but there were fewer frames, meaning potentially less compression per frame. However, everyone I have heard of who’s tested it has come back saying “naw, no difference.” Reason is, the 50i camera uses a GOP of 12 frames, vs. 15 on the 60i camera — which makes the 60i camera get more efficient compression over the course of a GOP. So it netted out about the same.

I expect DVCPRO-HD to perform similarly — 50i or 60i will likely be a tossup. However, I do look forward to testing it and comparing it in real-world circumstances to see if there is any noticeable difference!

—————–
Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a)

[Toke]

[Barry Green] “c) even if the European version turns out to be 1440 instead of 1280, you’ll have fewer overall frames (which would be where the tradeoff comes in; more pixels in fewer frames vs. more frames with fewer pixels.) It’s not “better”, it’s different.”

So we’ll have 24p with 1280 pixels per row and 25p with 1440.
Now which one has more frames _and_ pixels?
And, yes, more compression with same constant datarate…