2 questions about rendering

Aje wrote on 3/7/2003, 5:01 AM

I´m working with proscanned old dubbel eight movies mostly black and white (kilometers).
There is a lot of clips and FX work - brightness/contrast, crossfades,croops and stills in every project.
I always render to best quality and PAL template

Question 1 :Do I lose quality if I render my projects to avi first and then render the avi file to DVD Mpeg 2.
I have a feeling that the mpeg 2 rendering will go "smother" on a prerendered avi file than
directly from timeline with all that FX stuff ?
I use the rendered avi files for security (DV tape)and mpeg2 for DVD burning so I must always do both anyhow.

In every project (hundreds) I put in music mostly from CD´s - working hard to get the right feeling and timing (Thanks for VV4´s audiopossibilities)
I´m new to AC3 but since I´ve got it now (VV4/DVDA) I understand that I can get more films on DVD than with PCM.

Question 2: I render my mpeg2 files in VV4 with PCM audio and then in DVDA change it to AC3 in the prepare dialog, is this the right way to do ?

Comments

Aje wrote on 3/7/2003, 1:03 PM

A "reply" to my questions just to get in front again.
I´m working hard every day with old movies (from the 1930 and forward)to my relatives.
I get in my opinion great results thanks to VV4 (I´m an old Acid and sound forge lover)
Must be sure that my work in the end is maximized.
Anybody care for an answer?!!
See above !

Chienworks wrote on 3/7/2003, 1:20 PM

I can't help you with the second question, but on the first one i would say go for the .avi inbetween route. Since you're already creating a DV .avi file anyway, there's no sense in rendering all the effects & such again. SonicFoundry's DV codec is very good and near lossless. You'll get far more loss going to MPEG anyway, so what tiny bit of loss there is in rendering to DV first won't make any difference. For that matter, if you're capturing in DV to begin with, then any scenes that have to edits, effects, crossfades, filters, etc. will simply be copied to the new DV file bit for bit with no rendering. Creating your subsequent MPEG renders from the first DV render will be much faster than starting from the original project again.

jetdv wrote on 3/7/2003, 1:53 PM

Question 2: I render my mpeg2 files in VV4 with PCM audio and then in DVDA change it to AC3 in the prepare dialog, is this the right way to do ?

If you truly render it with uncompressed audio, then DVDA should be able to give you a very clean AC3 conversion. However, If you are rendering a standard MPEG2 file with compressed audio, you are better off rendering the AC3 file from Vegas and then telling DVDA to use that AC3 file instead.

Aje wrote on 3/8/2003, 2:12 AM

Thanks for the answers - now I know what to do.
Aje

Aje wrote on 3/8/2003, 12:54 PM

Thanks a lot for your answers!

"you are better off rendering the AC3 file from Vegas and then telling DVDA to use that AC3 file instead."

I have really searched the help files on the "telling DVDA to use the Ac3 file"
and can´t figure it out!
If I render the "pictures" to mpeg2 using template DVD architect video stream
I get e rendered videofile without audio.
I then render the belonging audio file to SF AC3 template stereo (only option)
I get an AC3 file OK
BUT HOW DOES DVDA KNOW WHICH OF THE AC3 FILES THAT BELONGS TO WHICH VIDEOSTREM
if I have say 30 different films in my authoring project.
This is probably basic stuff but I´m stuck.
I would appreciate at least a hint where to read about these things
if you don´t think its worth an answer.
regards
Aje

jetdv wrote on 3/8/2003, 1:48 PM

First, drag the MPG clip to a menu to create the link to the movie. Then, double-click that menu option and the movie will appear on a timeline. On the right-hand side will be two text boxes - one for video and one for audio. Drag the AC3 file to the audio box and you will be set.

JohnnyRoy wrote on 3/8/2003, 10:56 PM

Actually it's even easier than that. Just keep the name for your MPG and AC3 file the same (and why wouldn't you?) and DVD Architect will sense that the MPEG file is a video stream only and look for and load the AC3 file of the same name with it. You don’t have to do anything else.

~jr

Aje wrote on 3/9/2003, 3:47 AM

Yeah -I guessed there was an easy way to do it!
Thanks a lot for both answers.
Aje