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PCM to ???

Delpheas

Delpheas

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I extracted a audio file from a dvd, and it was in PCM format, how can I use it, or convert it to be usable in Womble?
 
PCM is just a WAV file and they are very large. your best bet is to convert it to ac3 using besweet (freeware). unless of course you wish to retain maximum audio quality. im pretty sure womble will handle pcm although you may need to simply change the file extension to .wav
 
yes, pcm wav is great for womble. Since it is uncompressed, about every program can handle it with ease. It is just a tad big.
 
Womble says it is an unrecognized file type...
 
It still says it is a "Unknown Media Type"
 
hmmm, not sure what the problem is then. Womble should accept this.


Do you have any audio editing software? you could try opening it with that and saving as something different. Or also use BeSweet as nOmArch suggested.
 
Since I already tried converting it with Audacity, I'll try that besweet program.
 
is your windows changed to really change file endings? Because actually there cannot be a problem with wav.
 
yeah, I've done many things where I had to change the file extension.

Hmm, it turns out i needed to set dvd decrypter to "raw" instead of "demux"
 
dvd decrypter....
always interesting that this thing is still used. :)
 
depending on how you ripped it from the DVD, it could be a direct stream copy - in LPCM (not WAV...)

you should be able to open it in audacity using the raw import. change the settings to the file specifications (probably: 16bit/big endian/stereo/48000)

this can also be converted to WAV with sox:
sox -B -r48000 -t .raw -c 2 -b 16 -s infile.pcm outfile.wav
 
I have had this rare issue occur before. I believe it all boiled down to header info in the file. Easiest way to fix it (in my case) was to input the lpcm in Sony soundforge and just re-save it under the "microsoft wave format"
 
yes the actual issue is that there is no header information with the lpcm stream - i wouldn't want this "guessed" by an editing program - you would do this with whatever program you are ripping the DVD (extract DVD audio to WAV file).

but when you find yourself with an LPCM stream and want to convert it to WAV, you must provide the header information to the converting program (bits, signed-ness, endian-ness, channels, sample rate, etc.)

i always use sox for that.
 
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