Need to re-encode VOB files Dolby Trailers from Cinenow.com

[VideoMann]

I downloaded the various "Dolby Movie Trailers" from Cinenow.com . They are VOB files. I used VOBEdit to demux the files to AC3-audio and the M2V-video. I then opened an older DVD authored project and tried to add the "dolby movie trailer" as the first playing clip.

Since I'm using ReelDVD it gives me the error that all files must be captured with the same parameters. In this case all my files have audio in AC3 at 192bps but the trailer has audio in the range of 448bps.

How do I re-encode the audio to 192 ?

This is what I tried:
Attempt-1 ) Attempted to use Softencode to re-encode the AC3: when the 448bps trailer is imported there is nothing but noise

Attempt-2 ) I tried ReeldDVD to open a new project with just the trailer. Since there are no other clips it accepts the trailer.m2v and the trailer.ac3 and it plays fine. I then told it to re-encode the clip (video and audio-at-192 into a TS_Video hopefully giving me a VOB but with sound at 192. It did that and it plays fine.

Summary

trailer.m2v + trailer.ac3(448)--->ReelDVD -- produce VOB w/ ac3 audio at 192 ----> trailer.VOB produced and plays fine

trailer.VOB ---> VOBedit --- produce m2v and ac3 files by demuxing --->
newtrailer.m2v and newtrailer.ac3(192)

ReelDVD Old Project with other clips having audio ac3 at 192 will not accept the newtrailer.ac3(192)

Now since ReelDVD only accepts Elementary Streams the VOB created must be de-muxed again to get a trailer.m2v and the trailer.ac3 hopefully at 192. I used VOBedit again. I then opened the "old project" and tried again to add the trailer.m2v and the trailer.ac3 but ReelDVD still tells me it cannot accept the audio because the parameters don't match with the other clips.

How can I make those movie trailers audio compatible with my other clips?


Thanks

[VideoMann]

Help! anybody outhere?

Thanks

[VideoMann]

Shame on you guys! Over 100 views and nobody can post a clue of help or support.

I'll post the answer myself for those that really care but don't know either.

1. Demux the VOB movie trailer using TMPGenc.
a) Open TMPG---> pop-up menu -->hit cancel
b) File --> MPEG Tools ---> select De-Multiplex Tab
c) Find your VOB trailer file with the browse button
d) Double click on the Stream listed (don't hit the Run button)
e) You now got 2 files trailer.m2v = trailer video and trailer.ac3= audio portion. These are known as Elementary Streams.

2. You now want to change the trailer.ac3 from a rate of 448Kbps to 192Kbps.
For this you need a program that can encode AC3. Unfortunately they are very expensive ($1000 or more). Fortunately there is a discontinued product called Soft Encode floating around in the net. Don't ask me for it. Do your search. As an alternative look at AC3Machine

All you have to do is Open Soft Encode and change the audio.ac3 trailer to whatever Kbps you want. There is a guide doom9.com for this





here is the link:
http://www.doom9.org/transcode_ac3.htm

GO TO DOOM9 FOR THE FULL GUIDE

3. Now you have the trailer.m2v and the audio portion trailer.ac3(192Kbps). You can use a DVD authoring program that accepts Elementary Streams (xxx.m2v and xxx.ac3) like ReelDVD or other. If your program does not accept Elementary streams you need to re-combine the parts (video & audio) into one file. You can use TMPEG again or some other program (there are many).

Why use AC3 at all and why go from 448Kbps to 192Kbps?

Because AC3 produces smaller audio files, whic allowss you to encode your video at higher resolutions or fit a longer video clip in a DVD.

By the way those Cinenow.com clips look great once you get them working and burn them.

Cheers!

[BJ_M]

just a note - 448bps means to me those files are 5:1 and 192 is 2ch DD

REELDVD doesnt support 5:1 I do believe ..

[VideoMann]

BJ-M:

Yes, ReelDVD supports 448Kbps. Just all the files must be 448Kbps or all the files must be 224 or 192.

[BJ_M]

BJ-M:

Yes, ReelDVD supports 448Kbps. Just all the files must be 448Kbps or all the files must be 224 or 192.

does it support 5:1 (6 channels though) ? on the sonic web site site it says it doesnt - only 2 ch dolby digital