MPEG encoded by TMPG, no sound

[King_Diamond]

Hello everyone,

I have encoded an avi file with TMPG to mpeg format using system video and audio (LPCM).

The problem is that when I play the mpeg with windows media player or with real one player, there is no sound. When I open the same file within TMPG, the sound is ok.

I had done this about a year ago and I recall that it played fine with the above players. I need it to be used with the above players and would like to keep the same format if possible. Does anyone know what the problem might be?

Regards.

[MrTroy]

What audio does your source file have? PCM, MPA, AC3, ...?

[King_Diamond]

The source file is avi (video + audio). If you would like further info, please ask.

[MrTroy]

Try opening the file in a player like VideoLan (www.videolan.org) and click Stream Information. This should give you information about the audio stream.

If it's ac3, that's most likely the problem. TMPGEnc doesn't handle ac3 streams correctly.

[setarip_old]

Hi!

Try making the audio MPEG-compliant MPEG1LayerII instead of LPCM...

[King_Diamond]

MrTroy,
The audio is not ac3 as I did the audio stream myself. It's PCM.

setarip_old,
That's what I was going to try but I never used MPEG1LayerII. What is the difference between this and LPCM, qualitywise?

[King_Diamond]

I encoded it with MPEG1LayerII and it works with windows media player.

I tried playing the LPCM encoded file with windows media classic and it works. So is the problem with windows media player? Perhaps a missing codec?

[setarip_old]

No, different players have different abilities/requirements/limitations. Windows Media Player probably "insists" on having MPEG-compliant audio for playback as part of an MPEG file.

Glad to hear my suggestion now allows you to play the file in Windows Media Player ;>}

[King_Diamond]

I'm glad too, thanks for your suggestion but I am concerned about the audio quality in case I would need to do a DVD compliant disc. Would it be possible keeping a good quality audio, encoded to ac3 for example? If I'm not mistaken, MPEG1LayerII max bit rate is 384K while LPCM is 1536K.

[setarip_old]

You are now asking an entirely different question. If your (new) concern is now about creating a DVD, by all means retain the PCM (.WAV) format, as this has nothing to do with why one or another of your PC's software players isn't producing audio output of a particular format. All DVD players will playback (L)PCM and .AC3 audio and virtually all will also playback .MP2 audio...

[King_Diamond]

My present concern is that of an mpeg played by media player. I am also concerned with dvd compliant as I don't know what the boss will ask in the near future for the same file!!

Anyway, thanks for your help.

[setarip_old]

thanks for your help.My pleasure ;>}

(You can simply save separate .MP2 and .WAV audiostreams and then multiplex them with the videostream as needed...)