Sound stream stopped working after being multiplexed

[moviebuff2]

Hello everyone:

I have a video stream (.m2v) and an MP3 audio strream (44.1Hz, 320kBits/s). Using TMPGEnc, I multiplexed these 2 streams into an MPEG file.

The streams played perfectly in my Philips DVD player DVP642, separately, but in the multiplexed file, only the video played, the audio did not.

But the same MPG file plays fine, both video and sound, in my computer.

Would someone please tell me why the MP3 audio stream would play perfectly alone in the Philips DVP642, but not in the multiplexed MPEG file? Was the MP3 audio stream changed into something else in the multiplex process, causing the Philips DVP642 unable to recognize it?

Thanks

[redwudz]

Normally a MP3 stream wouldn't be valid with a MPEG video, though some players might accept it. A computer probably wouldn't care. You could convert it to a AC3 audio with ffmpeggui and then it would probably work with most any player.

[Midzuki]

The chipset of your standalone was designed to not playback
mp3 audio and mpeg video at the same time ---
even though mpeg_video + mpeg-1_audio~layer-3 <==> 100% MPEG~compliant.

++++++++++++++++

[freebird73717]

Just taking a stab at this but 44.1khz is not complaint for dvd. Dvd needs 48khz MPEG-1 layer 2, DolbyDigital (AC3), or PCM Audio.

Perhaps your dvd player will play mp3s fine but won't accept mp3 as the audio for a dvd because it is out of the dvd specs.

Try resampling the audio to 48khz and see if that helps.

[Midzuki]

OK, the DVD-Forum specs require audio to be sampled @ 48kHz,
however the (S)VCD standards require 44.1kHz audio, and the
standalone of the OP is able to playback (S)VCDs.
The apparent conclusion is, DVP642 is mp3-crippled only because
the engineers who created it wanted so.

++++++

[moviebuff2]

Thank you for your help.

I used TMPGEnc to change the audio file from 44.1 to 48, then multiplexed the new audio stream to my m2v video. It works.

[Midzuki]

We're glad that you have found a solution to your problem.
But I serious doubt that most "pro"s will want to learn
something useful from this thread.

=================

[freebird73717]

OK, the DVD-Forum specs require audio to be sampled @ 48kHz,
however the (S)VCD standards require 44.1kHz audio, and the
standalone of the OP is able to playback (S)VCDs.
The apparent conclusion is, DVP642 is mp3-crippled only because
the engineers who created it wanted so.

++++++

While I do not consider myself a pro I personally did learn from this. That was a very logical train of thought. I frankly didn't think to attack it that way.