Discwelder clarification (5.1 flac to DVD-Audio)

[martyn7772]

Hi there

Im needing a little clarification on burning my 5.1 flac files to Dvd
audio format on a DVD R or DL DVD.

I understand I need to take the Flac 5.1 file

Convert to Wav (done this with DBpoweramp)
Split to mono Wav
Compress/encode with Surcode (to reduce below 9.6mbps)
Import into Discwelder
Burn

I seem to have created a DVD Audio straight from the 6 channel Wav
(post DBPoweramp), importing into Discwelder and Burning

Am I missing something here? I cant see the bit rate or any other info
but I appear to have 6 discrete channels.

Also Unable to burn more than 4.7GB even on DL discs (V2.06 DWelder)

I have an Oppo 980 dvd player for DVDA & SACD playback (if this makes
a difference)

[grill]

As I recall DW 2,06 supported authoring out of spec DVDA from 5,1
24/96 wav files. Some players can cope with it, others not. For DL
DVDA authoring use DW v2.0.25 (for example).

[martyn7772]

Thanks for the reply

So bottom line - Im still burning a hi resolution disc (ie factory dvd
audio quality)?

[grill]

Yes, unlike HD/DVD-Audio Solo DW (at least Chrome II) doesn't
downsample.

[Lokkerman]

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[realafrica]

downsample? What do you mean by this grill? HD Audio Solo does not
simply downsample.

[grill]

See HD-Audio Solo Ultra Help - Using HD-Audio Solo - Downsample Multi-
Channel Track (I quote):

"The DVD-Audio standard specified the mandatory maximum bitrate to
9.6Mbit/Sec, that means, for example, an uncompressed 5.1 surround
audio track at 96kHz/24-bit or 88kHz/24-bit, with bitrate above
9.6Mbit/Sec, is not allowed for DVD-Audio disc. To meet the bitrate
limit, these tracks can be down sampled to a lower resolution.
HD-Audio Solo supports the following downsample resolutions:

5.1 track original resolution
Downsample resolutions supported
96kHz/24-bit 96kHz/16-bit or 48kHz/24-bit
88kHz/24-bit 88kHz/16-bit or 44kHz/24-bit

To set the downsampling parameters:
1. Import the 5.1 track to Project view.
2. If the track exceeds the 9.6Mbit/Sec bitrate, Solo will down the
Output bit depth to 16-bit by default.
3. You can change the Output sampling rate and bit depth to desired
values from the Import->Files tab."

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[realafrica]

OK grill I see what you meant now. But your earlier post was rather
brief and could be read as saying that HD-Audio Solo usually
downsamples in all cases. Your more specific later post makes it more
clear. However, I believe it's also possible in HD-Audio solo to chose
to only downsample the rears and keep the fronts at 24/96 rather than
downsample all channels to 16 bit or 48Khz. HD-Audio Solo is quite
versatile in this respect. As it does not accept MLP it has these
other ways to deal with the problem of going over 9.6Mbit/sec max bit
rate.
I agree it's better, if possible to make MLP and use DiscWelder Chrome
2. However I have been able to author many DVD-A with HD-Audio Solo at
24/96 by using the quad output option. It's OK for me as I don't use
any SubWoofer and am happy to have the LFE spread to the other
channels for my 4 full size speakers with 12" woofers that love to
handle bass.

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[grill]

Yes, you're right. Downsampling does not worsen the value of HD-Audio
Solo as long as one is (as you are) exactly aware of that.

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