what mpeg2 rendering fomat should i choose when i render a project and take it to DVD-A?

I rendered it in Vegas 4 to be a mpeg-II (mainconcepts) that is all. Is there some setting that I need to know about?

just found it in the manual.
u have to render the project as 'DVD achitect ntsc video stream' and render the wave seperately as pcm wave or ac-3. pdf page 16-18
i have another question. is it better to do it this way rather than rerendering again in DVD-A? i mean quality wise. is it a script i can render the video and audio using one command?
thanks guys

I think it's much wiser to render in Vegas, because when it's done, you have the actual MPEG2 and AC3 files which you can use at a later time -- maybe you want to change the chapter points or something in the DVD. When you render with DVDA, you don't get those files to use again if you need to modify the DVDA project -- you have to render all over again.

I think that MPEGs used in motion backgrounds/thumbnails will be re-rendered. I'm not sure how smart DVDA is about it. Like if you have a huge MPEG file, and you are using a portion of it for the menu background, it may be wise to render the section you need for the BG separately -- but I'm not sure about this.

-Jeremy

-Jeremy

let say i have an one hour project, if i render dvd achitect ntsc mpeg-2 and pcm wave file seperately, will the audio part in sync? the manual said i need to render the pcm wave as 16 bit 48000 or 96000, do i have to dither?
thanks

i just did a test.
i rendered an avi video file as 'mpeg2 dvd architect ntsc' format, audio as pcm wave uncompressed 16bit 48000khz stereo. start a project in DVD-A, prepare dvd, the only alert message i get this time is 'the audio will be recompressed'
according to the manual, all the render formats are right, how come i still get this message?

any idea?

I usually use the TMPEG encoder to convert projects to MPEG2. Does DVDa reencode all movie files again?

DVDA wants to put AC3 audio on the DVD, so if you hand it a PCM file, it will compress that into AC3 and then multiplex that with the video stream. I don't recall offhand if there's a way to change this behavior or not. I prefer AC3 because the audio takes up less space on the DVD which allows me more total play time.

Just render directly from Vegas as an AC3 file.

If you encode from TPMBEnc as an MPEG-2 Program Stream (with no audio), DVDA shoulnd't have to recompress. I seem to recall trying this sometime back with a short clip and it worked fine.

Use the "File | Optimize DVD" menu to show you what video and audio you have, the format that it will be on the DVD, and whether or not DVDA wants to recompress it. You can change the audio between PCM and AC-3 using the dropdown list at the bottom of this window.

this time i rendered the audio as ac-3 dvd stereo, the alert message doenst show in DVD-A prepare file. but when i preview the video, the audio output level is very low, is there any setting i should change? i also render a small section as 16bit 48000 and the level is fine. but again if i import this pcm wave in DVD-A, the 'audio file will be recompressed' message shows again.
same audio file export 16bit 48000 level is close to 0db, AC-3 stereo file level is -20db on showing on my outboard mixer.
any idea?

i found a workaround! under dolby digital AC-3 template > preprocessing > dynamic range compression, i set both line mode profile and RF mode profile to 'none', render AC-3 again, now the output level is the same as preview. looks like the file has been compressed there.
btw, what is line mode and RF mode? what do they do?
thanks