Encoding Dolby Digital 5.1 (AC3) sound in MP4 files using AC3 pass-through

Looking for an application that will encode Dolby Digital 5.1 (AC3) sound in an .mp4 container using AC3 pass-through for playing videos with surround sound on ATV.
Handbrake is out of the question because I run Tiger. The Tiger version cannot do AC3 pass-through.
Visual Hub is no longer available.
Any other options?

You may need Apple's MPEG2 QT plugin as well for MPEGStreamclip.
Also, consider if running windows in parallels/Boot Camp etc that there's a windows version, and possibly a linux version.
VisualHub code was released open source - Google FilRedux and PunyVid (iSquint derivative). Not tried either though.

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ATV3 - I need to enable dolby digital for optical surround sound (netflix and home movies), but when I do this it stops audio coming through TV speakers

I have a cinema sound receiver connected to Apple TV via optical cable. When I have dolby digital set to Auto it doesn't come through as dolby digital when watching movies on netflix and iTunes (home movies).
If I set Dolby Digital to ON it works as expected, but the sound stops working through normal TV speakers (via HDMI). This is the same for netflix and home movies.
I tried 16 bit setting, but it made no difference.
Any advice on how I can get this working - meaning Dolby Digital always on for when I turn my surround sound on and sound through speakers for normal operation?
Obviously I can change the setting when needed, its just a pain.
Thanks in advance.

Hello everyone,
here is the friendly and signed driver installation method to enable Dolby Digital Plus in your Encore internal speakers only. This is not an official driver, there is no control panel for Dolby Digital Plus or various sound effects, but tested and has much better and richer surround sound quality as before with factory driver. I guess, this driver tweak can work with any Bay Trail tablet also.
How can you upgrade Encore sound drivers:
1. Download signed driver package and extract.
2. Open Device Manager.
3. Upgrade your Sound, Video and game controllers
- Intel SST Audio Device
- Realtek I2S Audio Codec
one by one with "Have a disk" method.
4. Double click enabledolby.reg file and add to your registry.
5. Restart, and enjoy better sound quality.
Thanks.
UPDATE: Official Toshiba Dolby Digital leaked, official driver attached: ToshibaDolby.zip
- Encore with WimBoot -
Attachments:
EncoreDolby.zip ‏310 KB
ToshibaDolby.zip ‏1310 KB

Newbie question: Why is "learn sound model" greyed out when trying to remove background sounds in a file using the Spectral Frequency display?

I am trying to remove background sounds in a file using the Spectral Frequency display. The first edit on a new file, this process works fine:
1. use brush to cover sound
2. right click, learn sound model
3. effects/noise-reduction-restoration/Sound Remover
The next time I try to remove another sound in the file, "learn sound model" is greyed out. I have to close the file and reopen to be able to make another edit. What on earth is going on? Can it only learn one sound model or something?
I'm a newbie, so thanks in advance for your advice!

My daughter has had her Razr for about 9 months now. About two weeks ago she picked up her phone in the morning on her way to school when she noticed two cracks, both starting at the camera lens. One goes completely to the bottom and the other goes sharply to the side. She has never dropped it and me and my husband went over it with a fine tooth comb. We looked under a magnifying glass and could no find any reason for the glass to crack. Not one ding, scratch or bang. Our daughter really takes good care of her stuff, but we still wanted to make sure before we sent it in for repairs. Well we did and we got a reply from Motorola with a picture of the cracks saying this was customer abuse and that it is not covered under warranty. Even though they did not find any physical damage to back it up. Well I e-mailed them back and told them I did a little research and found pages of people having the same problems. Well I did not hear from them until I received a notice from Fed Ex that they were sending the phone back. NOT FIXED!!! I went to look up why and guess what there is no case open any more for the phone. It has been wiped clean. I put in the RMA # it comes back not found, I put in the ID #, the SN# and all comes back not found. Yet a day earlier all the info was there. I know there is a lot more people like me and all of you, but they just don't want to be bothered so they pay to have it fix, just to have it do it again. Unless they have found the problem and only fixing it on a customer pay only set up. I am furious and will not be recommending this phone to anyone. And to think I was considering this phone for my next up grade! NOT!!!!

Sound Blaster able to encode Dolby Digital 5.1 and abo

Hi there.
I recently buy a new motherboard without dolby digital encoding onboard (the older, nForce2 (asus a7n8x deluxe had that capability, the new one, doesnt, it is an asus a8n-sli premium)
I use the coaxial digital out to connect my computer to the home theatre with only one cable (that rules), also, enabling "cloning" allow me to listen using at least 4 speakers, instead of the two front ones.
Someone told me to buying a "cheap" sound blaster will do the trick.
My options are (from cheap to expensi've):
CREATIVE AUDIGY SE SB0570 OEM
CREATIVE AUDIGY SE SB0570 BOX
CREATIVE AUDIGY2 VALUE
CREATIVE S.BLASTER X-FI PLATINUM
CREATIVE S.BLASTER X-FI XTREME
For me, the best option is the SB0570 BOX. The Audigy2 VALUE have 2.5 times the price of it.
What do you recommend?
Thanks in advance!
Fa

Analog to Digital Conversion is exactly that: It translates the Analog input signal of eg. a microphone into a PCM digital signal, with 24-bit precision. That is essentially the Line-IN and the Microphone input. (Although for the microphone they tend to have lower precision but amplify the signal).
There is a sticky at the top of this forum which you should read to understand the difference between the various digital formats.
To make it clear: The Sound Blasters have an SPDIF output which can send digital signals. However it does not have a Dolby Digital compression engine, so it will either send uncompressed PCM signals if it has processed them before. If you have a source that is already in Dolby Digital then you can redirect it through the SPDIF output and get full surround sound. This ONLY happens on DVDs, because they come precompressed.
Everything that gets processed on the soundcard is outputted as PCM digital: For 6-channel audio there are 3 connections which end up on 3 DACs (Digital to Analog Converter) where the digital signal is then made into analog for the speakers to be able to play it. The SPDIF connection simply bypasses the DACs (the DACs of the receiver are used) but takes only connection, that of the front speakers.
Dolby Digital AC-3 is a compression mechanism, which compresses sound (much like mp3), so that it can fit in only one connection, where uncompressed only a stereo signal would pass. (In doing so, it also lowers quality!)
So: If you want to use a 7. speaker system with a Sound Blaster you have to go analog, which also means 3 cables (because they have 3 wires for the channels + ground). And I don't think Dolby or DTS supports more than 5. channels for the time being, so not even with Dolby Encoding onboard could you do it with one cable.

How to encode Dolby Digital (AC3) 24 bit

I noticed that all my dolby digital setings in Compressor are in 16 bit. Is there a way to have them set on 24 bit. In A.Pack, you could encode the audio in 24 bit.

I could be misunderstanding something, but I've been reading Apple's whitepaper to make sure of the details.
"48 bit" is unclear, because it could mean 12x4 or 16x3. Both combinations are impossible with ProRes 422.

No sound in mp4 files in cs5

Hi,
I download videos from my youtube channel to rework them in cs5. For the download I use dvdsoft youtube downloader which gives u the option to download original mp4 file and/or render it in different formats such as avi and wmv. Now, when I download those mp4 videos I do have sound in my windows media player after installing those codecs DVDVideoSoft.com: FAQ and Support - K-Lite Codec Mega Pack . But when I test the sound in my after effects with the key , then I get no sound whatsoever. I assume now that those codecs are not loaded into after effects and wonder if there is any solution to it? Can I for example just inport codecs to after effects?
Thanks
Chris

Get rid of the K-Lite codec pack. You will find hundreds if not thousands of post where this product is causing problems.

No sound recording avi files using Camileo S20

Hi all
I got the s20 on thursday and it has been a nightmare. Before the sound went i couldn't get the video files to work in Movie Edit Pro or sony vegas.
It didn't even work in the Arcsoft software that came with it.
I have tried it on three differant computers and it keeps showing up with no audio.
I have tried all the codecs you can think of and none of them worked. Now i cant hear any sound even when i play it back on the S20.
I dont really now what to do. I have two other hd camcorders and they work fine on my computer.
I have had to re-format my computer as the codecs had messed it up. If i had my way i would send it back and be done with it but i have to wait until tomorrow before i can contact this number which i have been given.
What i want to know is:
Is there any way i can get the avi files to work in sony vegas and movie edit pro 15 plus?
Any help or advise would be welcome.
thanks
regards
Chrisc74

>Is there any way i can get the avi files to work in sony vegas and movie edit pro 15
As far as I know the S20 creates the h264 encoded videos.
This means that you need the H264 codex in order to get video and sound on your notebook.
I cannot say anything about the sony vegas or movie edit pro software because I dont use it.
But I edited my videos using the common widows movie maker and everything was ok.

Remove sound from mp4 file?

I want to remove all the sound from a video that is in mp4 format. How do I do this?

How to read each "word" in the input file?Well, you'll need to "tokenize" the file as your reading it in. Look at the API docs for java.io.StreamTokenizer and see if that's appropriate for your application. If not, you can simple read the data in character by character and have some logic that decides what is a word...

Sound for MP4 Files

How do I get Premiere Elements to reconize MP4 sound?

1cooper1
It is my understanding that your thread questions revolving around the same basic issue are now all being directed to
http://forums.adobe.com/thread/1301319?tstart=0
Have you gone through the questions there and responded yet?
I suspect that the thread we are in now will be closed by one of the moderators and traffic directed to the thread whose link I have provided.
It is going throught the Q&A that we rule in or out factors contributing to your issue.
Thanks.
ATR

Clueless how to mate the AC3 sound file given me with my video project

Hi gang. This morning I started researching how to do this, but haven't figured it out yet.
My DSLR projct has ben edited on Premiere Pro CS5. I created the project in stereo and once I picture locked, outputted an OMF file to the sound mixer.
He just delievered to me an AC3 file. I've no idea what to do next.
I'd like to mate the AC3 with my video, of course. Do I do that in Premiere Pro? Do I export an uncompressed AVI video file and somehow mate the two together somewhere else?
Clueless here.
(of note: This Friday I am having a screening of three of my short films, including this one. The screener will be on DVD and has to be an auto play DVD, something you can pop into the player, no menus, it just plays and goes from video to video. I created a couple test DVD's in Encore and it worked.)
Heres all the specs for the export:
Name: Dolby Digital Professional 5.1
Description: Dolby Digital 5.1 audio at 448 kbps
File Extension: ac3
Estimated file size: 192.26 MB/hour of source
Segmentation on cluster disabled
Audio Encoder
                Format: AC3
                Sample Rate: 48.000kHz
                Channels: 6
                Bits Per Sample: 16
                Target System: DVD Video
                Data Rate: 448 kbps
                Compression Preset: Film Standard
                Audio Coding Mode: 3/2 (L, C, R, Ls, Rs)
                BitStream Mode: Complete Main
                Center Mix Level: -3dB
                Surround Mix Level: -3dB
                Dolby Surround Mode: None
                LFE Exists: Yes
                Dialog Normalization: -27 dbFS
                Copyright Exists: Yes
                Original Content: Yes
                Audio Production Information Exists: No
                RF Overmodulation Protection: Off
                Channel Bandwidth Lowpass Filter: On
                DC Highpass Filter: On
                LFE Channel Lowpass Filter: On
                3dB Attenuation: Off
                phase 90: On
                Deemphasis: Off

Export out a video file. Bring that and the .ac3 file into Encore for DVD authoring.

Audigy4 Pro - Dolby Digital Li

In my effort to further simplify connections in my home theater, I would like to be able to have surround sound gaming (EAX) pass through my optical connection to my reciever as Dolby Digital just like DVDs and WMV/Xvid/etc... I know that none of the current SoundBlasters do this out of the box, but are there any hardware or software modifications that can be done to the card/driver for me do this? It seems that such a capable card should be able to convert EAX to DD. I love the card, but I'm going to wind up switching to another line in a few weeks if I can't find a solution. I just do not want to run six cables from my PC to my receiver and then have to switch my receiver from DVD to 6-Channel input every time I start a game or listen to music or watch a movie.
If I'm just beating a dead horse, does anyone know when or if Creative will unveil a sound card with the ability to encode Dolby Digital in real time? I haven't had a computer without a Creative sound card in it in over a decade, so if something is coming soon, I can hold out for a little while...

you must think that dolby digital is not a no loss codec
analog 5. is no loss!!! thats the point i think
from that point analog is better than li've ac3(but thats just for we germans call they beamte:-)))
but i apreciate? a li've ac3 encoder too because its more easy to use than the three to 4 audio cables
my english is bad sorry

Disappointing - Apple TV Lacks Dolby digital

It is disappointing that apple tv lacks dolby digital sound. What is the point of watching a home theater movie in High Def without DD 5.1 They need to resolve this issue to be successful IMHO. Any other thoughts?

Supposedly the hardware of the Apple TV is capable of Dolby Digital and 5.1 (or even 7.1) surround sound. That is it will pass through such signals to the optical out.
The real problem is that QuickTime (and remember the Apple TV is running Mac OS X and QuickTime) has very poor to no support for such 'high end' audio standards.
Yes you can pass a 5.1 encoded audio file in WAV format (or possibly AIFF format) to the Apple TV and it will then pass it unaltered to the optical out, which is connected to your AV Receiver and you will get surround sound. But WAV and AIFF are audio only standards, you cannot use them for movies.
The nearest you can currently get for video in QuickTime is to have 6 AAC channels in a H.264 file. However very few AV Receivers support this sort of audio.
Basically QuickTime is the problem, and until it has much better support for Dolby Digital etc. there is absolutely no point improving the movie files on the iTunes Store since QuickTime (and hence Apple TV) will not be able to play them. Even the QuickTime MPEG2 component is no better.
Interestingly, Front Row 2.0 in Leopard now has the ability to play VIDEO_TS folders (via the Apple DVD Player framework). This means you can in Front Row play surround sound and even subtitles for 'movies' stored in VIDEO_TS folders on your hard disk (that have been ripped from DVD). This works because Front Row is using DVD Player and not using QuickTime.
Note: QuickTime even QuickTime 7.2 in Leopard has for all intents no support for subtitles either.
All the above makes a Mac mini running Front Row a much better solution than an Apple TV (although much more expensive).
Apple really need to fix surround sound and subtitle support in QuickTime urgently, even Windows Media Player does a better job!!
I did read an article recently decrying Apple (and others) for leading to demise of 'audiophile' quality. That is the proliferation of MP3 and other compressed formats over CD quality sound (I personally use Apple Lossless which is CD quality). Likewise currently Apple TV and iTunes force the downgrading from movies with digital surround sound to merely old fashioned stereo.

Weird Dolby Digital Errors in Some Progr

I read the FAQ on Dolby Digital Exporting and all of that jazz. I have my X-Fi Fatality dumping directly into a receiver via optical cable that decodes Dolby Digital.
However it's weird, in Media Player Classic, VLC, and the like, I'm getting weird errors as Dolby Digital isn't working completely in MPC, and in VLC it kinda goes on and off in little bli
ps.
(As in the sound is just blips and the receiver is showing dolby digital and then not about twice a second.)
However if I play a video with AC3 audio in Nero Showtime (lol) it works just fine and AC3 is working at 00%.
So my question is what am I doing wrong in VLC and MPC and other programs that is making Dolby Digital not work?
Any tricks or tips?
Thanks

VLC is designed to play everything by itself, including your dolby digital data. This can often be very useful, because you don't have to download codecs. Other times, it can be a problem such as when you want to pass the data through without processing. VLC probably has an option to do that, but I haven't used the software enough to know where it is.
In MPC, play your video/audio and check the listing in Play>Filters. Write down (or take a screen shot of) that list and submit it here. It shows the path the audio (and video) takes, and will show if you have a codec which is interfering.

HD TV Show... can't get Dolby Digital 5.1 to Work

I just bought an episode of Chuck (from NBC). In the description of the show it says that it has Dolby Digital 5.1 Surround Sound. I have my macbook-pro hooked up to my surround sound system using a mini-toslink -> optical connector. When playing the episode the Stereo track plays just fine... but if I switch to Surround.... I get no sound.
Any ideas?

I bought LOST season 5 season pass.
I only found out about this 'non-feature' after trying for ages to get it to work and searching for a solution.
When I first complained I got told by support that it was probably a hardware issue and to call the support line. I did, got the same answer, and was then asked to part with more money for continued support, which I declined. I asked point blank whether DD5.1 really only plays back on Apple TV - which was denied.
After continuing to pursue it I finally got an email from 'tier 2' support admitting that 5.1 does only plays back on an Apple TV: here's the text:
+This is+ name removed +from iTunes Store Customer Support and your request+
+has been escalated to me today. I understand that you have been+
+unable to use Dolby surround sound on your computer for your iTunes+
+Store purchases.+
+Dolby 5.1 surround sound is currently only available for the Apple+
+TV. Apple recognizes that no one is better qualified to provide+
+feedback about the content provided on the iTunes Store than the+
+people who use it.+
I got back to them to say I'd like a (small!) partial refund - to cover the costs of my phone bills and disappointment. They've gone silent.
I've now reported it to Trading Standards in the UK as it is misselling. Curiously - since i complained the 'About HD' section - where it used to say +on your Apple TV or Computer+ has been changed.

Dolby Digital In

OK; this may not even be a problem specific to the Vista drivers - but this is the problem I am having in Vista RC:
I have my Audigy2 ZS drivers installed and working, as well as I can tell. If I have the SPDIF settings in the Audio Console set to do the Dolby Digital 5. decode, then Media Center understands and uses all 5 channels. Aside from some occassional stuttering - it sounds great.
BUT - I also have my XBox 360 running its optical out into the optical input of the Audigy breakout box. With the above setting, there doesn't seem to be any sound coming from the center channel. However, if I switcht he above setting to SPDIF passthrough, it sounds perfect. But then I get no sound in Windows or Media Center.
Does anyone know a setting that might get everything working properly together? And if not, does anyone know of any command line settings that I could drop into a batch file to automatically switch back and forth between the SPDIF passthrough and the DD5. decode settings?

Did you look at this thread?
http://discussions.apple.com/thread.jspa?threadID=1383644&tstart=0

Encoding Dolby Digital 5.1 (AC3) sound in MP4 files using AC3 pass-through

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