muxing mv2 and wav

[Drakng]

Can I muxed m2v and wav into mpg and then authored? Reason is bacause when I did it to mp2 my dvd standalone cannot detect the sound. I don't want to do it to ac3 because without a decoder amp, can the dvd player played the finished dvd? I don't have a decoder amp. I just connect the dvd player directly to my TV.

[macleod]

use mpeg tools in TMPGENC

[Drakng]

I tried but no success. Tmpg said linear PCM wav not supported. What now? One more stupid question. Can a dvd standalone played dvd encoded with mp2 with/without a decoder amp? I asked this because tmpg always encoded to mp2. Someone told me that dvd player only played ac3 and pcm. Is it correct?

[bugster]

If you use Ac3 (2ch stereo or 5.1ch), your DVD player will downmix to stereo PCM if you don't have an external decoder, so Ac3 is the better way to go.

[MOVIEGEEK]

Drakng wrote:"Someone told me that dvd player only played ac3 and pcm. Is it correct?"
NTSC DVD players do not have to play MP2 but most will.MP2 will play in all PAL DVD players.

BTW...PCM(CD-1141kbps) and LPCM(DVD-1536kbps) are not the same.

[Drakng]

Since PCM and LPCM are different, can the dvd created by tmpg with LPCM worked in a standalone without a decoder? My dvd standalone is multicode.

[MOVIEGEEK]

Since PCM and LPCM are different, can the dvd created by tmpg with LPCM worked in a standalone without a decoder? My dvd standalone is multicode.

Yes...LPCM,AC3 and DTS are supported by all DVD players,hearing DTS is another story.

[Drakng]

Yes Bugster.. I believe you are right!! AC3 is the way...but problem is I don't have a ac3 capable sound card (not everyone has one) so how can I hear and checked whether my video and sound synced!! Is there a work around?

[FOO]

WMP should play it
Fer shur WinDVD or PowerDVD will

[macleod]

just so you know, there could be a time that it plays JUST fine on your computer, however, you end up with sync issues with your paticular dvd player. Software players are very forgiving while most dvd players are not.

I suggest you do a test burn on a DVD-/+RW to make absolutely sure. If you are converting avis (divx, xvid) this is more likely to happen.

[Schmendrick]

@ Drakng: Have you checked the sampling frequency of the mp2-files which you multiplexed with the m2v and your standalone was unable to decode it? The sampling frequency has to be 48 kHz and not 44.1 kHz. If you use TMPEnc then from a multiplexed mpg-file you can just reencode the audio track to resample it from 44.1 kHz to 48 kHz to obtain a DVD-compliant audio-stream, then you can autor a DVD-structure an burn it with e.g. Nero and the resulting DVD should be playable in any stanalone DVD-player as lonag as the video-format conforms to the standards.

By the way TMPGEnc is not able to directly reencode a mp2 from a mp2-file, just from multiplexed mpg-files or from a PCM-WAV-file, so you can also decode the mp2-file into a PCM-WAV-file, resample to 48 kHz and then feed it to TMPGEnc for encoding to mp2.

CU

Schmendrick

[Drakng]

Maybe Moviegeek is correct. My Samsung Model M108 may not be able to handle mp2 format. I don't know. Does anyone have this model without problem? The sampling rate is correct, 48Khz. This model can played both system, NTSC and PAL. Is it correct to assume that since my dvd cannot played the disc, then the decoder amp would shows no audio .Assuming that the dvd can played mp2, would the decoder downmixed the audio to PCM automatically. Every time I played a commercial disc, the decoder's window would shows either AC3/DTS or PCM never MP2. I am still learning.

[Cornucopia]

PCM(CD-1141kbps) and LPCM(DVD-1536kbps) are not the same.

Now your going to confuse them more.

With very few exceptions (ADPCM on the PC being one), PCM

DOES = LPCM!

The only difference between the PCM on a CD and PCM on a DVD is sample rate and bit depth (44100Hz,16bit vs. 48000Hz, 16 or 20 or 24bit). That and the understanding that the pcm on a dvd is muxed into the VOB and not raw like the CD.

This topic has been discussed before, and I'm pretty sure it was concluded that the ONLY way to mux an m2v along with a wav was to author into a DVD VOB. Standard MPEG Program streams don't allow it.

Scott

[Drakng]

Thanks Cornocopia,but it does not address my problem!! My problem is I used TMPG to encode the avi to dvd compliant mpg and TMPG encode the sound to mp2. Then I authored it to vob. Now my dvd cannot played!! Will the dvd player downmixed the mp2 to pcm or the decoder amp that do the job? Or simply the dvd player cannot played the mp2 sound.Is the problem lies with the player or the decoder. I have a Marantz surround amp.

[Drakng]

Oh One more thing, maybe MovieGeek can helped me here. I demuxed the sound to wav and then to ac3. Now I load the m2v and ac3 file to TMPG DVD and authored it. Before I actually covert it to vob, I previewed the clip in TMPGDVD itself. There is no sound although I have an AC3 capable soundcard.Is there any kind of settings in TMPGDVD that I must do before I can hear the sound. I am still learning.

[Schmendrick]

Besides having an AC3-capable soundcard you also have to have an AC3-decoder being installed on your system. If you have a software DVD-Player like WinDVD installed then you should be able to play the vob-files at least with this software DVD-Player in the file mode. So if you don't hear sound within TMPGDVD then most likely you do not have an AC3-decoder installed on your system.

A reason why your standalone DVD-player does not play your MP2-DVD might be the fact that to my knowledge many standalone DVD-players sold in the US are not capable to play MP2-sound-tracks as the NTSC-DVD-standard uses either LPCM or AC3 (Dolby) as sound tracks, while the PAL-DVD-standard also uses MPEG-Audio.

CU

Schmendrick

[Drakng]

Yes! Now I can hear the ac3 track by using Windvd. Another problem came out. The motion menu that I created with TMPGDVD is also encoded with ac3 but I still can't hear it only the main movie can be heard!! Is something wrong with TMPGDVD ? Maybe the motion background can only handled motion mpeg without sound!!Can someone throws some light on this.

[MOVIEGEEK]

@Drakng,
It's possible that TMPG DVD Author doesn't support audio with motion menus but DVDLab does.

@Cornucopia,
You wrote"PCM DOES=LPCM!"...following that logic then:
AC3=DTS
MP2=MP3
If a PCM file is a WAV then all WAV's are PCM.

[Cornucopia]

@Cornucopia,
You wrote"PCM DOES=LPCM!"...following that logic then:
AC3=DTS
MP2=MP3
If a PCM file is a WAV then all WAV's are PCM.

MOVIEGEEK, I don't know what logic you're claiming to follow, but I did say there were exceptions.

As a refresher, and for those uninitiated:

PCM stands for "Pulse Code Modulation" a way of digitally coding an analog signal that uses a modulation technique where the change in the modulation mirrors the normal fluctuation of the original analog.
It can be coded either "Linearly" (as in LPCM) or "Non-Linearly" (as in Delta Modulation, Delta-Sigma, Adaptive Modulation, Adaptive-Delta aka ADPCM, etc).
There are, of course, other non-analogous digital coding methods, including most all of the lossy compression types.
PCM is a "RAW" signal file in that it is just the samples, without any usual meta-info or headers.
The main soundfiles in use are container formats that encapsulate the raw PCM, or other method, within a header, metafile info and timing/sync info. These are WAV, AIFF, and SD2. The great majority of info that they hold (but NOT the only type) is Linear PCM.

So I stand by what I wrote earlier, and you know as well as I that
AC3 is only similar to DTS, and
MP2 is related to MP3, just not as complex and efficient.

Scott