HVR-Z1U HD vs. HVX200

[Gary Adcock]

[toke lahti] “Even if hdv’s interframe compression is a bit more efficient, it also produces “movement error””

Toke – this is not correct, all HDV uses intra-frame compression- where the compression is computed across more than one frame from as little as 6 to as many as 15 frames – this is where the “movement error” you speak of. DVCPROHD uses inter frame compression – or every frame is compressed individually without regard to the adjacent frame.

Gary Adcock
Studio37
HD and Film Consultation
Chicago, IL USA

[Graeme Nattress]

Intra = inside, Inter = between. Intercity railways go between cities.

Intra frame compression = only inside that frame, like DVCproHD

Inter Frame compression = occurs on groups of frames.

Although all Interframe compression also uses intra frame compression as well, as both the image and the motion vectors are DCT compressed in MPEG2.

Now which hang down, stalegtites or stalegmites? Stalegtites hang down as a pair of tights on the washing line hang down.

On a graph, which way is X and Y. X is across, as “x is a cross”, and Y is up as the “three wise men looked up” – say “wise “as “yzzz”.

Ok enough…..

Graeme

– http://www.nattress.com – Film Effects and Standards Conversion for FCP

[Gary Adcock]

[gary adcock] “Toke – this is not correct”

Actually Toke you were correct — I miss spoke and got them backwards –HDV does use Inter-frame compression — DVCPROHD uses intra-frame.

Gary Adcock
Studio37
HD and Film Consultation
Chicago, IL USA

[Graeme Nattress]

Too much “new year’s cheer”?

Graeme

– http://www.nattress.com – Film Effects and Standards Conversion for FCP

[Kyle S]

An ignorant sales rep, none of us have ever seen one of those before. Manufactoring a deck is just a couple of steps different from putting the tape drive in the camera. Cannon has never made a deck before becase they had no reason to. I am sure Cannon will recify whatever problems they must in a reasonable time frame.

Kyle