dv to minidvd- plays back fine on player but with no sound

[stretch]

Hi all,
I find this web site to be very informative. I have been able to use this site to get a rather good understanding of all the material. However, one problem I have that I see no mention to here is the following:
I bought a dawoo 3000 dvg-3000n This player plays everything including minidvds they actually show up labeled as such but only in folder mode.
Any how the question that baffles me is that when I play the authored minidvd on my pc I can hear the sound but when played on the daowoo there is no sound. Could this be caused buy the original audio source from camcoder not being ac3 or 5.1? Do I have to convert the audio stream to ac3 then author minidvd? I am using minidvd to keep as much of the original dv source quality as possible I realize that xsvcd is good but for the short clips that I am archiving I feel that minidvd is better.
Any Ideas?
TIA
Stretch

[Baldrick]

Are you using wav/pcm audio or mpeg layer2 audio?

[stretch]

I took the orginal avi encoded it through TMPGEnc two ways: first: with sound in mpg2 file which I assume is the wav/pcm audio way
second: with separate video audio resulting in m2v video file and mp2 audio file, which I assume is the mpeg layer2 audio way.
The first way plays in dvd player with sound by just burning mpg file onto disc
I took the second way ran it through ulead authoring software to create AUDIO_TS and VIDEO_TS folders with vobs and such. Then through Nero to create minidvd. This way plays video but no audio.

Hummmmm?

[Thorn]

An mp2 file is an audio file compressed with mpeg layer 2 sound. You'll note the size of the file is relatively small. TMPGenc also compresses the sound before muxing so it is not PCM.

PCM/Wav sound will take about 10MB/minute, so you can recognize it by the size. The NTSC standard for DVD players (I assume you're doing NTSC?) does not have to accept mpeg sound for DVD-spec movies, and they often only accept it for VCD and SVCD.

You can split the sound from the source file before encoding, or you can demux the sound after encoding and convert back to wav. There are also utilities to convert the sound to AC3 sound (similar in size to mpeg audio, but more supported by DVD players). PCM and AC3 are the only audio formats that DVD players are required to support for DVDs.

[stretch]

Thorn,
The answer is cearly what I have been looking for. I will try and repost results.
If I understand right I will need to either strip the sound from the video during capture using the sound file later on in the authoring along with the dvd encoded video.
Or demux the mp2 into ac3 or pcm to use with the mv2 file in authoring
Thanks for the reply

[Thorn]

Don't worry about doing anything with the audio until you're done capturing. However, if you're capturing with a capture card you should be able to set the audio sampling frequency to 48KHz so you don't have to resample it later.

If you're capturing to an AVI, the sound is already PCM it just needs to be pulled out (virtualdub and other programs can do this). If you're capturing to mpeg, you'd demux the audio and then convert to whichever format you need.

[stretch]

Here is an update on my MiniDVD problem with the daewoo 3000n. It does work and may I add that this player plays anything you throw at it upto at least 7500kbit/sec.
My sound issue under miniDVD was solved by recording the sound in ac3 only! PCM sound does not work. The miniDVD plays only under folder naviagation mode though

[wulf109]

There are DVD players that will autoplay minDVD,Sampo 612 and Cyberhome 402 do it.