To Speed up rendering?

Maverick wrote on 11/9/2003, 6:27 AM

Before I attempt this perhaps someone could let me know whether I am just barking up the wrong tree here.

I have just rendered a project to mpeg-2 for DVD burning whivch took around 15 hours to do.

I now have to make a VHS tape, too so will PTT to DV first. If I delete all the video events in the project and replace with the mpeg-2 file just burnt would that help speed up the PTT process? Has anyone triied this yet?

Cheers

Comments

farss wrote on 11/9/2003, 6:48 AM

No. Stop.

Firstly you are going to take quite a quality hit as going back from mpeg-2 to DV is to be avoided. Secondly it's going to take about as long me thinks.

What i would have done is render the whole thing out to DV as an AVI file first. From this you can just load it into VV and then PTT with no redering involved. To go from that avi to mpeg-2 will be pretty quick becuase all that is happening is the encoding, the fx rendering is already done. There's no quality loss going this way as far as I know.

Chienworks wrote on 11/9/2003, 9:01 AM

Rendering to DV first then using this DV output as the source for rendering to other formats is almost always a very good way to go.

There is, however, a class of situations in which there could be a quality loss. If the original material is uncompressed or stills or some sort of HD format, then it will be encoded 4:4:4 or possibly 4:2:2. Rendering to DV will convert it to 4:1:1 and some color resolution will be lost. Of course, this is as good as DV gets and using SONY's encoder DV is very good. But, you won't get the original 4:4:4 or 4:2:2 back by using the DV render to make additional MPEG or other renders.

Maverick wrote on 11/9/2003, 10:05 AM

Thanks.

Too late for this project as I have already rendered to mpeg-2. But I'll bare it in mind fo future.

Cheers