HELP! No audio after encoding to MPG2 with TMPGENC

[skipple]

I have tried to encode A Beautiful Mind and SHallow Hal and neither one of them will give me audio after I finish encoding them. I have followed the tutorials line by line. Someone please help!

[banjazzer]

I don't know which tutorial you followed, but it is always wise to extract the audio as an uncompressed wav first. With most DivX this is no problem. With ac3 audio, it is a little more complicated. If you do this you will always have sound, presumimg there is sound in the original. 8)

[skipple]

I have tried to make the Uncompressed wav using virtualdub. Every time i try i get an error message when i go to save that says "AVIOutputWAV: Access Denied" is there another program i can use or am i just doing something wrong?

[skipple]

I just now tried to run a FIX program on it to check the .avi for errors, and it said that the file is write protected...could that be why i cant extract the audio?

[banjazzer]

Whether the file is write-protected or not makes no difference. When you open the avi in Virtualdub, check out File>File information. What does it say in the audio stream section?

[skipple]

it says

Samp Rate: 48000Hz
Channels: 2(Stereo)
Samp Prec: 0-bit
Compression: Fraunhofer IIS MPEG Layer-3 Codec
Preload Skew: 96 Samples
#of Frames: 167777

[banjazzer]

Well, that looks in order. Audio>Full processing mode and File>save wav should do the trick. It may be that you have errors in the avi, but that would not explain neither avi working properly. Maybe you should try another copy of Virtualdub?

[skipple]

I dont know what is wrong. I have tried the 4 or 5 versions on their website. Any other suggestions?

[banjazzer]

I cannot see any reason why you are not getting a wav produced. Just to confirm, when you do the File>save wav thing in vdub, are you getting no file whatsoever produced? You do have to put in the wav extension, but I'm sure you know that. Also, I never asked, but there is definitely audio in the original DivX that you can hear?

You could use Graphedit to extract the audio, although if you are not familiar with it, it can look a little complicated. This site gives some examples of how to use it: http://nickyguides.digital-digest.com/audio-extract.htm And you can get it from the downlaod section at: www.doom9.net

Basically, you start up Graphedit and press <CTRL>+R, then browse to your avi. This will bring up a series of boxes. Delete all boxes except the avi box, the avi splitter and the mpeg-layer 3 decoder.

Press <CTRL>+F to open the filters box. Expand the Direct Show filters section and insert the wav dest and the file writer filters. The latter will ask for a name and destination for the wav. Now join up the 5 boxes and *play the graph* by hitting the green triangle. This should produce your wav.

[skipple]

yes, there is audio in the original DIVX file. I tried with and without adding the .wav when saving. I will try that other program you recommended, thanks for all your help!

[skipple]

No, I am getting no sound what so ever produced when i use vdub. I tried a different program called AVI2WAV and it extracted the .wav in perfect quality, only problem is that it is at 48000Hz and not 44100Hz, I thought it might work anyways so I used it in TMPGENC and it created the .MPG but STILL NO SOUND! I dont know what is going wrong. is there any way i can convert that 48000Hz file into a 44100Hz file?

[banjazzer]

TMPGEnc should still accept the 48000 wav, and convert it internally to the reqired 44100, although it is probably not the best way. Download the tiny program ssrc from the Doom9 site and run it in a DOS window. Usage is:

ssrc --rate 44100 input.wav output.wav

Incidentally, what template are you using in TMPGEnc, (and again an obvious question, but we are running out of options), are you definitely inputting the wav to TMPGEnc, as well as the avi?

[Ostaf]

I've got a similar problem, except it doesn't tell me the audio codec. It says audio codec 05, unknown codec or some such nonsense, but plays fine in WMP. I THINK it has to do with files encoded with DivX audio as I believe it plays with the MP3 codec through WMP, but doesn't seem to have a codec of it's own installed, at least as near as I can find. It's certainly not listed under my codec selections list.
I read another post about WMP downloading codecs but not installing them. This allowed it to play files with those codecs while preventing them from being used by other programs. Figuring out how to manually install these codecs might solve the problem.

[banjazzer]

Most audio problems like you describe turn out to be ac3 audio, and there is a guide on this site on how to extract the audio as wav.

[Ostaf]

Thanks for the heads up. I'll give it a try, although it does play in WMP and everything I've read says ac3 won't.

[skipple]

Yes I am most definatly inputting the .wav when I use TMPGENC. I am using the SVCD NTSC Film template

[banjazzer]

Let us know how you get on with Graphedit - although if that doesn't work, I have no ideas left. 8)

[spidey]

You'll want to use NanDub to strip out the Audio to a "wav" however rename the extension from wav to ac3. Then use Headac3he to convert it to an actaul wav or Mp2 file.

Search for ac3 to wav and you'll find a longer description. This was just a synopsis.

As above, also make sure you have selected under audio, CONVERSION, and set it for 44100 x 16 bit x stereo.

[spidey]

You need to use Nandub over Vdub due to it's support for ac3.

See doom9.org's download area for the tools.

[skipple]

I FOUND OUT WHAT IT WAS GUYS! I tried it on my '98 machine instead of 2000 and it ran fine. i dont know why that would make a difference but i guess it did. thank you for all of your time and help!

[Ostaf]

try re-installing the codec on your 2000 machine. Fixed my problem.