Does m2t print to tape re-compress? Why?

johnmeyer wrote on 6/19/2006, 10:07 AM
I wanted to preserve a few segments of a long HDV session in native HDV so I can render to some future format some day. With DV, I can simply cut and then print to tape, and the original cut footage is sent to tape without further alteration.

However, when I do this same thing with HDV, it appears as though the entire length of my project is being re-rendered.

Why??

I realize that HDV used MPEG-2 and long GOP compression. I therefore fully understand the need to re-compress the section around the cut in order to create a new GOP around the cut. But, it further seems to me that such an operation should involve no more than 15-30 frames on either side of the cut.

Why is the entire tape being re-rendered??

[Edit]

Wow, Vegas is even worse than I thought. If you simply put an m2t file on the timeline, and then try to print it to HDV, it insists on re-rendering a file that has had nothing done to it! Stupid. I'm wasting a lot of time here, and I don't like that.

Comments

epirb wrote on 6/19/2006, 10:27 AM
Something to do with smart rendering. I know you probably dont want to to this but... That is why I like Cineforms new 3.03 codec, I often have sections that i want from a take. Now with the CFDI you can split clips, render out those sections and it does it faster than real time. Works great for me as regions and then name the clips the region names.

>I wish you could do the same (split -rerender)for the m2t's just for the sake of the smaller files.<

You could try the above with CFDI's then render the CFDI to m2t. i dont know if all that would be even longer though,lota steps, guess it depends on the size of the clip section.
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Jayster wrote on 6/19/2006, 11:11 AM
The HD Link program in Cineform's HD Connect has a "print to tape" feature. I've never used it, so I don't know if it takes m2t's as input for this or only CFDIs. But it might be worth looking into.
epirb wrote on 6/19/2006, 11:27 AM
it only uses m2t files on your computer, full file no options..