How to combine audio and video in DVD Architect?

ewporter wrote on 7/5/2003, 4:03 PM
· I rendered a selection of video segments in Vegas 4.0's DVD NTSC video option with no changing of that option's settings. The rendered MPEG-2 files play both video and audio in Window's media player. The total of the files length was listed as 4.48GB by Window's explorer, which should be small enough to fit on a 4.7GB DVD+R. When I loaded the clips into DVD Architect, and used the program's prepare DVD, feature a window came up and said that the project was 5,207.3MB (129.0% or 3.950GB media). When I clicked the optimized window each of the files were listed as being about 11% bigger than in Window's Explorer, and each was listed as having AC-3 audio, which I did not select.
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· (1) What was the reference to my media being 3.950GB, when my DVD+R is a 4.7 GB media?
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· (2) Why were the files about 11% bigger in DVD architect than in Window's Explorer.
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· (3) the total media I imported was about 100 minutes, I thought 2 hours would fit on a 4.7GB DVD. What is the problem?
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· (4) If I want to prevent the problem of having space taken up by both the audio that is encoded as part of MPEG-2 and as separate audio files created by DVD architect, do I have to have vegas render the audio and video separately?
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· (5) If so, what is the simpliest way of rendering both the audio and the video of a clip? And how do I assure that when I import a video clip the corresponding audio will come with it?
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· (6) Also if a pull an hour AVI file into Vegas it takes about 20 minutes to build and audio peeks file. This is really annoying. Is there anyway to hear the sound without building such a file.

Comments

swampler wrote on 7/5/2003, 4:44 PM
(1) You have to select what media you are using. It defaults to 3.95GB media for some reasons.

(3) Perhaps your bitrate is too high?

(6) I think you can cancel the peak building. Look in the preferences, you may be able to change it to build only for what's visible.
ewporter wrote on 7/5/2003, 6:24 PM
Swampler, Thank you. I will check out all your suggestions. Ewporter
CrazyRussian wrote on 7/7/2003, 12:22 PM
1) Default media size in DVDA is 3.95 GB, change it in Preferences
2) I think DVDA needs Video AND audio File, I dont think encoding as program stream (both video and audio in 1 file) will work for DVDA, that's why it takes your video out of mpg file you rendered, and then it renders AC3 audio out of that file, which explains why the total size of your project is bigger. And AC3 is also default render audio format in DVDA
3) The problem is that DVDA renders your audio again, see above. In one project I was able to put close to 4 hours of video on on DVD, and it still has pretty good quality video.
4) the simples way is to render in Vegas using DVDA templates. Render your video using DVDA NTSC DVD template, change bitrate though to accomodate your project. Then render AC3, name both of this files the same name (extentions gonna be different though), and once you import that video into DVDA it will pickup corresponding AC3 files for it.
5) See above, but if for some weird reason your audio will not get picked up automaticaly, you always can add/chage it later. I never got out of sync problem
6) you can always cancel it, and your audio will play ok, all it is just representation of that audio on the timeline, if building peaks was not done, you will not see audio waveform, it will say something "no peaks available" but your audio will play
Mandy wrote on 7/14/2003, 2:38 AM
"The problem is that DVDA renders your audio again"

Why should we create an ac3 file if DVDA renders it again?

wouldnt it be better to bring in 24 bit pcm and do 1 render

Im trying to understand this?
CrazyRussian wrote on 7/14/2003, 9:01 PM
When you create your DVD project, audio format is set to AC-3 by default. So, if it is anyting different, it will re-encode. Just do your editing in Vegas, output your video as Program stream (program stream means video with audio), but under "Audio" tab uncheck "Include Audio". This will produce still Program Stream (the one DVDA requires) with silent audio stream. Then output your audio in AC-3 format. Bring them both into DVDA and you have Video with AC3 audio. I would assume that if when rendering video one wont uncheck "Include Audio", DVDA will try re-encode. If you render your video and audio to the same file name (file extentions will be different though), then once video is brough into DVDA, it will automaticaly grab corresponding AC-3 audio file.
Hope this helps
CR
daves2 wrote on 7/14/2003, 9:59 PM
ewporter...2c on this:
- I think I got a reply from sofo on a similar topic a while back - if dvda gets your prog. stream w/ audio & then re-renders it, it will only include the re-rendered audio + your video onto the dvd (replacing the audio w/ the rendered one)...I thought it might be leaving the incoming audio format in the stream & adding the ac3 to the dvd, thus wasting a lot of space. I know you didn't ask about that but I thought I would throw it out there.
- There is a similar topic on the merits of rendering ac3 in vegas vs. dvda. However, the other topic doesn't have the comments you would want yet...I think I posted w/ a title of chapter markers avi vs. mpeg which is now OT to the tail end of the thred (you can search for posts created by my ID - this post is within the past several weeks)...although the double post is unintentional you may see comments in one not the other