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What audio format for Blu-ray

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Rick Hughes
What audio format for Blu-ray
on Nov 11, 2015 at 2:28:39 pm

What audio format should I render to for Blu-ray disks ?

On several tutorials I have see the advice to use Sony Wave64
Yet on Sony's own site it advise that its better to use AC3 as it does not have to be re-encoded in DVD Architect.

I notice that the Dolby AC3 template states 'AC3 Stereo DVD' but that may not in itself be an issue.
I did a test render using both .... one obvious point is that w64 files are about x10 the size of AC3 files.
AC3 encodes at 192Kbps while w64 uses 536kbps

Although Sony.w64 is used as the audio render in several tutorials, just been advised this is Sony proprietary format and not Blu-ray compliant, so presumably must be re-encoded by DVD architect.
To get compliant PCM would need to use Microsoft .wav templates

Source used within movie studio project is mp3 .. 192Kbps or 265kbps stereo

so would I be better using AC3 ?


Also googling here & on Sony web site see conflicting messages ... i.e on Sony Expert tips
# http://www.sonycreativesoftware.com/authoring_and_burning_blu-ray_discs
It states “You can use either PCM or AC3 audio formats for your Blu-ray disc.”

Yet in the DVD 5 architect manual "AC3 audio is only for DVD"

On Sony Bly-ray settings guide-
https://www.custcenter.com/app/answers/detail/a_id/4875/~/render-settings-f...
states to use AC3 or .wav


all very confusing (to me)


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Jorma Nippala
Re: What audio format for Blu-ray
on Nov 11, 2015 at 8:25:44 pm

If you have DVD Architect Studio 5, it's PCM audio (.wav or .w64).

Towards the end of this thread.
https://forums.creativecow.net/thread/208/879818


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Rick Hughes
Re: What audio format for Blu-ray
on Nov 11, 2015 at 9:58:49 pm

I had come across that post in my searches .. i.e. ac3 only for DVD.
If you look at links I posted, Sony state that you can use ac3
Hence my confusion.

I'll go with Sony w64 then, (uncompressed pcm) and ignore the more than 50x increase in file size :-)


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Jorma Nippala
Re: What audio format for Blu-ray
on Nov 11, 2015 at 10:20:25 pm

SCS forgets to make it clear in some of their documents that there is a difference between DVD A Studio and DVD A Pro.
Note the last but one post in the thread I mentioned in my previous post.
AC-3 Pro is a customizable version of the AC-3 encoder. It is the version that ships with Vegas Pro. AC-3 Studio is non-customizable and ships with (Vegas) Movie Studio Platinum.


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Rick Hughes
Re: What audio format for Blu-ray
on Nov 11, 2015 at 10:36:43 pm

OK ... so Sony .w64 (uncompressed PCM) it is then


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John Rofrano
Re: What audio format for Blu-ray
on Nov 13, 2015 at 12:30:25 am

[Rick Hughes] "OK ... so Sony .w64 (uncompressed PCM) it is then"
If you use that your audio will be recompressed to AC3.

Your choices for DVD compliance are Microsoft PCM (WAV) or Dolby Digital AC3 and NOT Sony Wave64 which is a proprietary format that can't be placed on DVDs.

Since your source is already low quality MP3 why not use the higher quality AC3? You really don't want to recompress MP3 audio too many times.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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Jorma Nippala
Re: What audio format for Blu-ray
on Nov 13, 2015 at 8:28:32 am

John, the OP is asking "what audio format for Blu-ray."
He has (MS Platinum 12 and) DVD Architect Studio. It does not recompress (the *.w64 render) in the OP's case.

From the thread linked above in my post.
https://forums.creativecow.net/thread/208/879818

("Only PCM Stereo audio is available for Blu-ray Disc projects."
Yea, I missed that... I had the project set to DVD. You're correct that DVD Architect Studio only allows PCM audio for Blu-ray.
)


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John Rofrano
Re: What audio format for Blu-ray
on Nov 13, 2015 at 12:09:58 pm

[Jorma Nippala] "He has (MS Platinum 12 and) DVD Architect Studio. It does not recompress (the *.w64 render) in the OP's case."
OK. I didn't realize he was using the Studio version.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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Rick Hughes
Re: What audio format for Blu-ray
on Nov 13, 2015 at 8:40:37 am

John you mention DVD compliance.
This is Blu-ray not DVD.
That is why I understood .w64 would produce Blu-ray compliant uncompressed PCM.


I am also unsure of whether DVD architect will allow .ac3 ... manual says no, but Sony expert tips say yes.

Is there a way to create Blu-ray disc image (avoid wasting blanks)
Can then try alternative codec and see if they are re-encoded or not.


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Jorma Nippala
Re: What audio format for Blu-ray
on Nov 13, 2015 at 8:49:54 am

Use (in your DVD A Studio 5) Make Blu-ray Disc > Prepare. The Review Message List > Optimize... will advise you of the recompressions. 10-second test projects are enough to tell you what happens.
It will recompress my *.ac3 file from MSP 12.
And get a BD-RE to avoid wasting blanks in testing.


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Rick Hughes
Re: What audio format for Blu-ray
on Nov 13, 2015 at 10:33:51 am

Thanks ... didn't know of that option.

Assume BD-RE the same as a DVD-rw. I'll go but a pack.


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John Rofrano
Re: What audio format for Blu-ray
on Nov 13, 2015 at 12:17:32 pm

[Rick Hughes] "This is Blu-ray not DVD."
There is no difference. Both Blu-ray and DVD use either AC3 or PCM audio.
[Rick Hughes] "That is why I understood .w64 would produce Blu-ray compliant uncompressed PCM."
Apparently it does. DVD Architect takes the PCM audio from the w64 wrapper and writes it directly to the disc. I didn't realize it would do this but I just tried it and it worked.
[Rick Hughes] "Is there a way to create Blu-ray disc image (avoid wasting blanks)"
Yes, DVD Architect comes with an image writer as one of the options.
[Rick Hughes] "Can then try alternative codec and see if they are re-encoded or not."
As Jorma pointed out... no need to write anything. Just go to the Optimize Disc... menu option and it will show you exactly what will and will not be recompressed.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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Rick Hughes
Re: What audio format for Blu-ray
on Nov 13, 2015 at 12:25:45 pm

To confirm I have ..

Movie Studio 12 Platinum
DVD Architect Studio 5


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Jorma Nippala
Re: What audio format for Blu-ray
on Nov 13, 2015 at 12:34:54 pm

Rick,
this "confusion" comes from the fact that the Studio versions don't have the "professional" ac-3 pro encoder that the Pro versions have.
That's why DVD A Studio has limited audio options for BD.


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Rick Hughes
Re: What audio format for Blu-ray
on Nov 13, 2015 at 1:30:45 pm

Thanks ... ver 5 has not been upgraded for some time

Maybe I'll look at 'pro' ver when they offer next upgrade, or would there be no point as Movie Studio only has the non "professional"! ac3 encoder.


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John Rofrano
Re: What audio format for Blu-ray
on Nov 14, 2015 at 2:21:56 pm

[Rick Hughes] "Maybe I'll look at 'pro' ver when they offer next upgrade, or would there be no point as Movie Studio only has the non "professional"! ac3 encoder."
The Movie Studio and DVD Architect Studio versions only have the basic AC3 encoder. You need to get Vegas Pro or DVD Architect Pro version to get the Pro AC3 encoder (if that was your question).

~jr

http://www.johnrofrano.com
http://www.vasst.com



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Jorma Nippala
Re: What audio format for Blu-ray
on Nov 14, 2015 at 3:01:34 pm

John,
I seem to remember that Vegas Pro can only create an ac3 Pro file when DVD A Pro is on your machine.
I've always had both installed and no problems with ac3 Pro files.
Movie Studio Platinum does not show the ac3 Pro option even if you have DVD A Pro.


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Rick Hughes
Re: What audio format for Blu-ray
on Nov 14, 2015 at 3:37:27 pm

That knocks that idea on the head then.
Maybe AC3 professional will make an appearance ion Movie Studio in future version - can't justify cost of Vegas Pro.


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John Rofrano
Re: What audio format for Blu-ray
on Nov 14, 2015 at 6:12:08 pm

[Jorma Nippala] "I seem to remember that Vegas Pro can only create an ac3 Pro file when DVD A Pro is on your machine."
That is correct. The Dolby Digital AC3 Pro encoder is shipped as part of DVD Architect Pro and does not come with Vegas Pro at all. I've always had both installed but now that you mention it, I do remember that computers where I only installed Vegas Pro installed did not have the AC3 Pro encoder.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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