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graysky
24th February 2007, 19:26
I can't explain it but when converting 5 ch. AC3 (DVD) to nero acc, the resulting acc files are noticeably more quiet. I'd like them to remain the same as the orginal.

I have tried switching the "Increase Volume automatically" on and off with no difference. Also, this is true whether I downmix to stereo or keep original channels. I'm using the NDACC-HE-96kbps profile.

Thanks for any help you can provide.
Shandra
25th February 2007, 00:43
Are you feeding the encoder via CLI, or are you using a kind of GUI? More Enviromental Data would be appreciated to be able to comprehend, and maybe answer the question ;)
graysky
25th February 2007, 02:00
Sorry... using MeGUI
graysky
26th February 2007, 21:41
Guess no one else has this problem with MeGUI downsampling 5-channel surround to stereo?
Dr.Khron
27th February 2007, 12:43
So far, I've ony suceeded in adding the multi-channel AC3 files directly to my final MKV files...

None of my attempts to convert a multi-channel AC3 into ANYTHING else has been sucessful. Besides, I figure that the Vorbis isn't going to save much space, so why bother rencoding? AC3 is a lossy format anyway, better to keep it as is.
graysky
27th February 2007, 20:21
Well, both Vorbis and ACC can sound pretty darn good @ 96 kbps so there is a pretty significant space savings from a 448 kbps ac3 file.

I just need to know how to either boost the volume during the conversion, or normalize the final acc or vorbis or something prior to muxing... what are other people doing?
cbarroso
27th February 2007, 22:24
IMHO, if you are not dealing with "that your preferred band concert" or a very good sound such as LOTR, it is worth to reencode the 448 ones to, for instance, -q.3 AAC Nero, what means an audio file with half size.
Shandra
28th February 2007, 20:34
Guess no one else has this problem with MeGUI downsampling 5-channel surround to stereo?

Mh, I just started with MeGUI recently and so far had only 2_0 source material to work with and had no simmiliar experience. With audio adjustment enabled it would afaik make sense in some cases that the resulting file is noticeable more quiet, but as you also tried without the option...

Out of Interest - does it happen with other transcoding (to NeroCLI) utilities as well? Like Foobar or BeLight ??? As the way the source stream is preprocessed/fed to the encoder is different in those apps It is just a question out of curriosity and propaply not a step towards a solution.

On the other hand - on what "decoding-way" to you compare the loudness???