Rendering and Re-rendering

jkb242 wrote on 11/5/2005, 9:52 AM

I am surre that others have encountered this same issue but I am asking here for input to see if prehaps I have overlooked something.

I have serveral clips on a time line containing various audio and/or video segments that cannot all be rendered at one time from begining to end on the time line. I am having to build several pieces separately, render them, then bring them back to the time line to combine with other similarily constructed pieces where eventually all the individual rendered pieces will be brought back to the time line and re-rendered to form a finished product.. Is the re-rendering process effecting oerall output quality? If so, is there a way around this or a way to perserve origially quality of the raw video?

The end result of this effort is one MPEG 2 file that I can use to prepare a single DVD NTSC.

Is there a better intermediate format I should use for each segment that would perserve quality or is the re-rendering process of each MPEG 2 segment really an issue I need to be concerned with regarding the preservation of quality?

Comments and suggestions please....

Comments

jrazz wrote on 11/5/2005, 10:04 AM

1. Why can't you render them all as one piece seeing that is what you are going to do anyway?
2. Render out to Avi as intermediate files- they will take up a lot of space but they will preserve quality.

j razz

TheHappyFriar wrote on 11/5/2005, 6:55 PM

I do something simular. I render completed parts to AVI. I use the "render to new track" option.

it's also quite a time saver when making your mpeg-2 files.

Paul_Holmes wrote on 11/5/2005, 8:42 PM

See this thread:

Rendering Format

If you have done any color correction you should render to the Sony YUV codec which is 4:2:2 colorspace.

There are other threads on colorspace of different codecs. I received an education on this a month or so ago and always use the Sony YUV so I don't lose anything going from the final render to MPEG.