Question about deinterlacing

[seven_deuce offsuit]

I heard that deinterlacing video may cause quality loss. And I was just wondering if I were to render a project in Vegas, if I wanted to save resolution quality, that I don't use a deinterlace method.

[rkr1958]

If you plan on keeping the same resolution then I'd keep the video interlaced unless you plan on doing temporal (i.e., over time) based noise filtering to clean up the video before encoding. Even then, I'd personally (re)interlace after filtering and then encode.

By the way, deinterlacing video (i.e., converting frames to fields) will not cause quality or resolution loss as long as you keep both fields and either encode using the proper settings or (re)interlace before encoding.