Rerendering material into subclips- resolution loss?

musman wrote on 10/26/2003, 8:42 PM
I'm dividing material I've already rendered into subclips and rendering them again as small subclips. Why? Because I need to use DVFilmmkaer and for some reason it can only handle small bits of my movie- 1 minute only. Once done I reconnect these bits and render again to make the full movie.
What I'm wondering is if I will lose quality of resolution from all this rerendering. Any thoughts? Thanks ahead of time.

Comments

BillyBoy wrote on 10/26/2003, 9:10 PM
Depends what format you render to. If you use either AVI or MPEG2 and the appropriate DV templates the loss is minor if any.
musman wrote on 10/27/2003, 1:19 AM
All rendered to avi. When this is done and reassembled I'll render to mpeg. So i shouldn't really worry too much, huh?
ps- Thanks for your color correcvtion tips and that site. Very helpful and I think I'm learning a lot.
Sid_Phillips wrote on 10/27/2003, 2:08 PM
musman:

As long as you render the AVI clips as "uncompressed" you should be OK. I don't understand why DVFilm Makeer won't read clips longer than 60 secs, you might want to contact DV Film and let them tech it for you.
musman wrote on 10/27/2003, 3:19 PM
I was just rendering under the template NTSC DV at Best quality. Are you saying I should use the "Default Template (uncompressed)" instead?
As far as DVfilmmaker goes, I've been emailing them back and forth about the problem and they want me to install and use some debug program. Haven't done that yet, but I can make things work this way.
Am I losing quality each time I render under the NTSC DV template?
Thanks!
jetdv wrote on 10/27/2003, 3:41 PM
If you render a section of a DV-AVI file to a new DV-AVI file and NO effects have been applied, the section will simply be COPIED with NO loss of quality.
Sid_Phillips wrote on 10/27/2003, 3:46 PM
musman:

Yep, what JetDV said is correct, as far as I know. It shouldn't comperess or re-compress anything.
musman wrote on 10/27/2003, 4:02 PM
Love this fourm. Thank you all very much. Just as a side note, I find when I render in after effects with cinelook my movie goes from 2.44 gig to around 20 gig. Then when I rerender it in vegas, it goes back to around 2.44 gig.
Does this make sense?
musman wrote on 10/27/2003, 4:35 PM
Forgot to mention, I think the reason DVFilmmaker is having problems is b/c the material has lots of speed changes. This is the charile chaplin silent film I've posted about many times and has undersampleing and velosity envelopes all over the place.
DVFilmmaker seems to work okay on longer pieces that don't have all that speed stuff added.