Creating Alternate Audio Streams

Hi guys,
I've worked with DVD Studio Pro before and I'm currently working on this project where I'm supposed to make a DVD that will play the film in either standard or dolby 5.1 audio. I've been trying to figure out how to make it use alternate video streams without just making two sets of the film in its entirety and I just can't understand the manual at all with all the talk about stories and whatnot. Can anybody tell me in simpler terms how I can create a dvd menu that will allow the viewer to choose to play the film in either normal stereo audio or dolby 5.1 audio?

Create both audio streams. Drop them into tracks 1 and 2. Now you have 1 video track with 2 audio tracks the user will be able to choose from while the video is playing. When you create a menu button, the button Inspector allows you to not only set a buttons target but will also allow you to set which stream to play.

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Hi
Please refer to this thread :
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Creating an audio-only stream from a live stream

I am using Flash Media Live Encoder (3.2) to send multiple bitrate streams to an instance of Adobe Media Server 5. In addition to the video streams, I am trying to generate an audio-only stream.
I am using the default 'livepkgr' application. The input stream contains H.264 video + AAC audio.
The stream name that I set in FMLE is set to this:
livestream%i?adbe-live-event=liveevent&adbe-audio-stream-name=livestream1_audio_only&adbe- audio-stream-src=livestream1
I created a variant playlist to include the audio-only stream. It looks like this:
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/hls-live/livepkgr/_definst_/liveevent/livestream1.m3u8
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/hls-live/livepkgr/_definst_/liveevent/livestream1_audio_only.m3u8
However, when I retrieve the audio-only playlist it contains a list of .ts files. If it was working correctly I would expect there to be a list of .aac files. Here's an extract from the playlist (livestream1_audio_only.m3u8):
#EXTM3U
#EXT-X-MEDIA-SEQUENCE:1927
#EXT-X-ALLOW-CACHE:NO
#EXT-X-VERSION:2
#EXT-X-TARGETDURATION:8
#EXTINF:8,
../../../../hls-live/streams/livepkgr/events/_definst_/liveevent/livestream1_audio_onlyNum1927.ts
#EXTINF:8,
../../../../hls-live/streams/livepkgr/events/_definst_/liveevent/livestream1_audio_onlyNum1928.ts
#EXTINF:8,
../../../../hls-live/streams/livepkgr/events/_definst_/liveevent/livestream1_audio_onlyNum1929.ts
#EXTINF:8,
../../../../hls-live/streams/livepkgr/events/_definst_/liveevent/livestream1_audio_onlyNum1930.ts
Any ideas why it doesn't seem to be working?
Thanks

Hi
No !
You first have to back-engineer the DVD to something the Mac can use eg StreamingDV
(I use Roxio Toast™ to do this) then convert this via QuickTime to .aiff 16-bit 44.1 kHz
then burn this onto a CD via eg iTunes.
An Analog copy from a DVD-player to the Mac Line-in and into an audiuo editor as Audacity (free on internet) then use this for the CD is easier and about as good as. (I can't differ)
Yours Bengt W

Can quicktime play an video track with multiple alternate audio tracks?

Hi,
If I have a video track with multiple alternate audio tracks (say different languages), can a user select the audio track of his choice and play in Quick time?
Thanks,
Apurva

Does quick time/ safari have this capability?
QT (i.e., the QT structure embeded in current Mac OS/device IOS versions) has the ability to switch between alternative audio tracks assuming the file is properly encoded and the compression format is supported. QT 7, QT X, iTunes, and similar app player GUIs can switch between such tracks during playback but the QT plug-in cannot. In a similar manner, devices like TV can switch between such tracks but an iPhone cannot just as an iPhone can select "Chapters" but the QT browser plug-in cannot but an iPhone file programmed with both chapters and alternate audio tracks can be played back through a TV device and access both chapters and alternative audio tracks.
What I want to use is one video track with alternate audio tracks in a set level manifest and play this using HTTP Live streaming. I'm using the manifest mentioned here :
http://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-8.7
Since I do not use playlists, I am not familiar with the approach in your example. If I want alternate audio and/or video tracks, I create standalone video files with these features built in. Nor do I use RTSP if that is what you mean by "live streaming" of content. If I want to "stream" the content, I use "Fast Start" files programmed to open in the QT player app which supports these features or create reference or QT Media Link files that do the same thing.
As you mentioned, Safari on my iPhone is playing the default/first alternate audio track mentioned but not giving an option to switch tracks.
Neither Safari nor the Video app GUIs on your iPhone have a built in switching option. The only way to switch to alternate audio tracks is to do so with QT 7 Pro or possibly iTunes before loading or streaming the video file. (Am still speaking about a standalone file here and not a programmed playlist/RTSP switch.)
However Quick time on my Mac machine only plays the audio with the the video stream and not the alternate audio track.
The QT player app GUI only switches between tracks that are stored as part of the standalone file. Basically, QT files may contain up to 99 individual data tracks. In alternative audio videos, multiple audio tracks are added to the file by an editor like QT 7 Pro but only one track is designated as "active." All other tracks are designated as "inactive." The QT player GUI allows the viewer to select which audio track he or she wants to hear and then turns off the current audio track and turns on the selected audio track. Otherwise all active tracks would play simultaneously.
Is there a way to switch tracks on my iPhone on Safari?
As previously noted, the default track can be manually changed by QT 7 Pro or, I believe, iTunes (used to have this capability) before actually loading or streaming content.
Does quicktime have this capability?
As far as I know, only with regard to stand alone files programmed with multiple alternate tracks. I am not a HTML, HTML5, or Java programmer so I assume there may be web alternatives here but they would be beyond the scope of my expertise.
Do you know any free player that can do this?
Again, I don't use either playlists or RTSP so I've never had a need to look for/use alternative players that might meet your needs. I simply find it easier to build files that work correctly in current player app/device GUIs already having these capabilities.
Or the very last option, can I build a player to do this? If yes can you suggest where/how I start?
Once again, I assume this might be possible but not part of my experience since, for my part, easier work flows are available.

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- .mv4
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- 2-pass encoding (turbo 1st pass)
- Native anamorphic resolution
- AC3 Dolby Pro Logic II mixdown
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Message was edited by: bazokajoe_2k
Message was edited by: bazokajoe_2k

I tried to follow what you are saying but not enough information here. I can only tell you that using HB on .m2t files or mpeg2 files user must uncheck Chapters in HB preferences to be able to use Chapters forward and back with the Apple remote and ATV.
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Can I use the new Apple TV without a display for audio streaming only?

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AC

How to extract data from Buffer and create a RTP stream

Hi
I'm working on a project where I need to interrupt a media stream (video and audio) and extract the data. Send the data with a custom protocol. On the recieveing side I would like to reconstruct the stream using only the data chunks.
I'm currently looking at [DataSourceReader.java|http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/DataSourceReader.java] and more specifically at a method like printDataInfo(Buffer buffer) to extract the data.
Is it possible to create a RTP stream, only having access to the byte array "data" in Buffer ?
Thanks in advance.

camelstrike wrote:
Hi
I'm working on a project where I need to interrupt a media stream (video and audio) and extract the data. Send the data with a custom protocol. On the recieveing side I would like to reconstruct the stream using only the data chunks.
I'm currently looking at [DataSourceReader.java|http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/DataSourceReader.java] and more specifically at a method like printDataInfo(Buffer buffer) to extract the data.
There are a couple of different ways to get the data. Reading it from inside a DataSink is perfectly fine...
Is it possible to create a RTP stream, only having access to the byte array "data" in Buffer ?Yes and no.
[http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/CustomPayload.html]
You need to know the format of the media in addition to the actual media data...

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http://audio.wgbh.org/otherWaysToListen/wcai.m3u
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Hi Badidea,
>> However, what I want is it to play without the popup and in my application not with the VLC installed on my computer.
Do you want to open the url without the popup? If so, I think you could block downloads from the webbrowser control, the link below shows the details:
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http://stackoverflow.com/questions/483262/how-to-block-downloads-in-net-webbrowser-control
But with this way, I am afraid that you could not open the audio. If you want to open the audio without the popup, I think you could automatically download the file, more information you could turn to the link below:
# Suppressing the Save/Open Dialog box in a WebBrowser control
http://stackoverflow.com/questions/3538874/suppressing-the-save-open-dialog-box-in-a-webbrowser-control
But if you want to open the audio in your application without the VLC, I am afraid that you could not achieve that. As you know, the audio needs the special player from the URL, I think it is restricted if you want to open the audio without the player.
Sorry for the inconvenient.
Best Regards,
Edward
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Error Encountered while copying Audio Stream on CAPTIVATE 3

Using Captivate 3 on Windows 2000
I don't have access to Captivate 4 or a newer version of
windows while in the office.. I do have admin rights to my machine.
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and when i "end" the recording it thinks and thinks and then gives
me this error.
Please advise on what I can do to fix.

I just attempted this fix..
Close Captivate 4 if it is open.
Download the file kept at
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Go to your Captivate 4 install folder (ex: C:\Program
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rename it as nsaudio.dll
Start Captivate 4
On Cap 3 to try.. and it didn't work either! Don't know if
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Hi,
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But on my Windows 7 desktop at the office, there do not seem to be any alternate data streams on downloaded files. DIR /R shows no Zone.Identifier ADS for downloaded files, and "This file came from another computer and might be blocked" is not displayed
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Nonetheless, downloaded files are preserving zone information. If I download an HTML file from our Intranet, and then open the downloaded file in IE, it shows as being in the Intranet zone. If I then copy that file to a FAT partition and back
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Any ideas what is happening here? How is the zone information being stored, if it is not in an ADS any more?

HMM I have the same problem. My researches suggest that the Zone.Identifier ADS is still being used for the internet zone, but not the Intranet zone. I too can get an intranet location out of IE, but not by querying Zone.Identifier eg using Powershell. This
issue is present in XP as well as Win 7. It appears to extend to trusted zone ids.
One hypothesis is that this is being stored in hidden form to prevent zone ids that decrease security being applied by malware.
I had thought that maybe the intranet zone id was only present during download - but your experiment suggests otherwise.

JMF and audio streams

Hi all,
I am writing an application that reads an audio stream and performs some analysis on the audio samples (e.g. detection of dtmf tones). I'd like to be able to write some code that works both on streams from files and from RTP connections (in order to easily write test classes). I made a little test program that reads a wav file with javasound and does some audio analysis.
public static void main(String[] args)
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2) Is there a way to get a stream from a DataSource and determine at runtime if the stream is in a particular format I'm expecting, WITHOUT bothering if it is coming form RTP, audio file or something else?
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Sorry but.. I don't know which is the appropriate subclass: I can't find it. I guess you missed "instanceof" in Java 101, eh?
Moreover I'd like to find a class that is not something like "RTPStream" or "AudioFileInputStream" but something representing just the audio stream itself.There are ways you can get access to the raw data as it flows through the system, but as far as I know, there's no way of gaining random access to the audio stream itself...
Note that a solution could be to use javasound AudioInputStream class and a simple java rtp library. I could implement my Audio analysis methods in order to work on "abstract streams" (given a particular audio format), then write a test class that work with audio files and a real application that gets input streams from RTP connections.
I just want to know whether JMF allows me do do that or not?It'd be relatively simple to use JMF to receive an RTP stream and "export" it to JavaSound... you'd just need to write a custom DataSink.

How to merge multiple live audio streams into a single stream in FMS?

I need to merge multiple live audio streams into a single stream so that i can pass this stream as input to VOIP through a softphone.
For this i tried the following approach:
Created a new stream (str1) on FMS onAppStart and recorded the live streams (sent throgh microphone) in that new stream.
Below is the code :
application.onAppStart = function()
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application.myStream.record();
application.onPublish = function (client,stream)
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Any pointers regarding this are welcome.
Thanks

well i tried this once for one of my scripts and the final conclusion is its not possible to combine two streams into 1.....how would you time/encode the two voices......there is no know solution to this in flash. If you continue on despite me and find a solution please post it so we can explain to rest of world.

Multiple audio streams for 1 video track

Hi I have a few different sountracks I want to use with one video asset.
I want to avoid duplicating the video track and putting a version of the audio in it.
If I have an Audio tab in my menus with music and lyrics, one with instrumental only and a dolby 5.1 surrond
how do i target the buttons to choose different audio as i click on the 5.1 let's say, it will choose to play stream #3 5.1 surrond.
Been looking in the manual but could't find anything.
Any help is appreciated
thanx
jm

Sorry about the links -:(
Anyway follow these steps and it should work (one approach, not difficult to do, I just wrote the steps in small bites )
Press F3 Key so we are looking at the same layout in DVD SP
1.) Make a menu with two buttons, label them Audio A and Audio B
2.) Make a Track (the "TRACK")
3.) Place your video on the video portion of the TRACK
4.) Place your Audio A on A1 track and Audio B on the A2 track
5.) Drop a chapter marker at the end of the TRACK (one should be at the begininng of the track by default)
6.) Click Add Story from the top Bar for the TRACK
7.) Name that story Story A, add the first Chapter Marker to the Story
8.) In inspector for Story A deselect/remove check marks for all audio except for 1 (uncheck 2-7)
9.) Duplicate Story A as Story B
10.) In inspector for Story B deselect/remove check marks for all audio except for 2 (uncheck 1, 3-7)
11.) Set Button 1 from menu to Story A, Button 2 story B
Note that this method will not allow toggling between the audio. A quick way to permit toggling is to do as above, but have both Audios (1 & 2) checked in steps 8 & 10
Create a script called PRESTORYA and set it as a prescript for Story B, with the following:
Set System Stream AU(Audio Stream 1)
Create a script called PRESTORYB and set it as a prescript for Story B, with the following:
Set System Stream AU(Audio Stream 2)
FWIW the links worked just now (downloads a zip file directly to HD, take a look in activity window in Safari, maybe there for you?)

Audio streaming from URL

Hi friends,
Currently imdoing a project in online radio streaming.I have some problems in my coding.Will anyone help me to find out?or will anyone send me the codings,if u have?Below this program its showing error message as " COULD NOT CREATE AUDIO STREAM FROM INPUT STREAM".and how to use this continuous stream option.
public static void main(String args[])throws IOException
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just visit
http://javasolution.blogspot.com/2007/04/simple-application-for-voice.html

Creating Alternate Audio Streams

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