Rendering back and fourth until finally done

[necromancer]

If i choose to use After effects and Sony Vegas for a project I use to render to lagarith codec to AE and then when i was doing my effects/ect to transfer back to sony vegas for the footage i'd render to lagarith again and reopened footage in Sony Vegas until i sent the final product to Zarxgui/AMV Tool... am i loosing quality doing that way at all?

[Scintilla]

Short answer: No, because Lagarith is a loss-less codec.



Long answer: There may be a slight loss of fidelity if you use Lagarith in YUY2, YV12, or any other YUV mode, as I believe that Vegas and After Effects work in the RGB colorspace internally. I'm not sure that it would be visible just from two or three conversions, but personally I wouldn't take the chance, considering how cheap hard drive space is these days. More here.

[necromancer]

Gotcha, I do have two 4tb to work with... so for the long answer you'd suggest to convert the YV12 to RGB then?

[necromancer]

Disregard I think ill leave color conversion alone and stick with Yv12

[Scintilla]

Gotcha, I do have two 4tb to work with... so for the long answer you'd suggest to convert the YV12 to RGB then?

For the long answer I suggest using Lagarith in RGB mode for every intermediate file you render out of Vegas/AE that you'll need to take back in. Only once it comes to the final, full-timeline export would I go to YV12.

That, not sticking with YV12, is how you minimize the colorspace conversions in a situation like this.