Audio Stream - Play Speed

How to increase/decrease audio stream (wave file) play speed.

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Several Audio streams playing at once

Hello again Friends,
Sorry to be such a pain, but I know that someone here has the answer to this problem. The original thread is located here.
http://forums.adobe.com/thread/51284?tstart=0
The post is marked answered! The writer refers to two swf files that corrected the problem, but did not include them in the post. They were given to him by Adobe support and contained actionscript to initially stop the sound streams (stopAllSounds), and then restart them with the second swf. I have searched high and low to find the code to restart the sounds (or find an antedote to stopAllSounds). I would appreciate any help here. This is holding up a fairly major project.
Thanks,
Brad (the Pest)

I would say that if you want the song to loop that it may be
better to use a Sound Object and a little code. so if you would be
interested in this route - remove the sound from the timeline.
first - set up the sound by selecting it in the library and
right-click select 'properties...' - then in the properties panel
check the 'export for ActionScript' box and give the sound an
'Indentifier' name - this will allow you to use the sound file
within the document and point to it in code by using the ID name.
next - make a new layer called 'actions' on the main timeline
if you don't have one already - select the first frame and enter
the code below - replace the 'IDname.mp3' with the ID name of your
sound file you've assigned.
see the 'sound.start()' method below - the second parameter
in it refers to the amount of 'loops' that it will run before
stopping - you can set this any way you would like.
more information on the Sound Object class is available
HERE

Synchronization of Multiple Audio Streams

Hi,
I'm trying to synchronize several Audio streams during
playback and recording. Several questions I have and not sure if
actually feasible or how to best address :
1/ When playing back 2 audio streams, how can I ensure the
playback is full synchronized (<20ms difference) when client
receives the 2 streams in playback ? Basically trying to simulate a
mix-down with 2 // streaming. Ultimately wants to achieve this with
about 5 audio streams playing back and can't accept tolerate delay.
I suspect I need to synchronize the start of each stream so that
they all start together, but not been very succesfull so far.
Alternatively is there a way to mix-down 2 streams on server and
send back a 1 mixed-down audio stream ?
2/ More tricky I believe : If I playback 1 audio stream and
start recording a separate audio stream, I'm getting again
desynchronised. Later If I replay the 1 audio and the newly
recorded one, both are not anymore aligned. I suspect (but not sure
that the delay and desynchronization is introduced during the
recording but not sure and reason I asked first question...
If someone knows those answers or could provide some
direction of work.... I would greatly appreciate.
Thanks

When it comes to FMS streams, there really is no way of
accurately syncronizing streams. Since you can't keep data in
buffer when pausing the stream, and you have to rebuffer any time
you seek, it's impossible.
The only way I've been able to sync flv's is using
progressive download. With progressive, you can sync streams, but
the accuracy is limited to the keyframe interval of the flv files.
For example, if you have 2 keyframes per second, you can achieve
sync with 1 second accuracy. with 4 keyframes per second, you can
get the offset down to 500ms. If you make every frame a keyframe
(makes for a huge file), you can get frame accurate sync.
The theory is to build a class that monitors the time and
buffer length properties of your two streams, pausing and/or
seeking when needed to maintain sync.

Dual Audio Streams

Is there a way to have two audio streams playing at the same time on the iPad and/or iPhone? I'm looking for a workaround specifically with Spotify playing music while watching a workout video streaming from iTunes. Thanks!

See page 98 of iPhone iOS4 User Guide
or page 58 of the iPad User Guide

Streaming audio from my IPAD to my Apple TV from Rhapsody application. when Apple TV go into Screen Saver mode, about 5 minutes after that it stops playing the Audio Stream and goes into Sleep mode.

I am Streaming audio from my IPAD to my Apple TV from Rhapsody application. when Apple TV go into Screen Saver mode, about 5 minutes after that it stops playing the Audio Stream and goes into Sleep mode. I am using the Optical Out from the Apple TV to my receiver, the Apple TV is hard Wired to the Network, the IPAD is Wirelessly attached to the network (it continues to play the Audio Stream). When the Apple TV is turned back on it resumes playing once I manual select it for output from the IPAD. All device are on current releases of software. I have no Video hooked up to the Apple TV. How do I correct this?

Intermittent problems are often a result of interference. Interference can be caused by other networks in the neighbourhood or from household electrical items.
You can download and install iStumbler (NetStumbler for windows users) to help you see which channels are used by neighbouring networks so that you can avoid them, but iStumbler will not see household items.
Refer to your router manual for instructions on changing your wifi channel or adjusting your multicast rate.
There are other types of problems that can affect networks, but this is by far the most common, hence worth mentioning first. Networks that have inherent issues can be seen to work differently with different versions of the same software. You might also try moving the Apple TV away from other electrical equipment.

C# Webbrowser using VLCplugin to play online audio stream

Hello all,
I have been trying to get the VLC to play a audio stream from a URL address.
I created a forms application and added a webbroswer from the toolbox. I can navigate no problem but if I goto a link like
http://audio.wgbh.org/otherWaysToListen/wcai.m3u
I get a popup dialog that asked do I want to open this file. If i accept VLC opens and it plays no issue.
However, what I want is it to play without the popup and in my application not with the VLC installed on my computer.
I have seem many things about VLC selecting files but I have not been able to find a reference for pulling a stream with my C# form when browsing with the webbrowser item on my form.
Any help would be thankful.

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:
# How to block downloads in .NET WebBrowser control?
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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.mp3 compressed audio stream dose not play in AIR

Hi All,
We are trying to load stream audio file with mp3 compression in the AIR app using the follwoing code using FLash CS4 -
var snd:Sound = new Sound();
snd.load(new URLRequest(""http://67.159.30.133""));
snd.play();
This works fine when we publish for flashPlayer 9/10. When we try to publish it using AIR the sound dose not play.
We have tested with another approach, where we are loading sound with .flv compression. Here we are using NetConnection and NetStream method to play the sound. With .flv compression it works well in both flash player version as well AIR versions. On the other side when we try to use NetConnection and NetStream method to play .mp3 compressed audio stream it dose not pl when we publish in AIR or flashplayer.
If anyone having any info to play .mp3 compressed format in AIR file will be very much appreciable.
Regards,
Kaushik
[email protected]

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site:forums.adobe.com xdcam
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I recently restored my itunes library and many songs imported from CD are now marked mpeg audio stream. I can't play them. Why did this happen?

I recently restored my itunes library and many songs imported from CD are now marked mpeg audio stream. I can't play them. Other imports are just fine. Why did this happen?

If there is a cure you may find the folks over here have more information for you. Repost your question here:
https://discussions.apple.com/community/itunes/itunes_for_mac?view=discussions

Variable video/audio play speed?

Is there a way to change the speed of audio/video playing in VideoPlayer or any other such control?
Let's say to play voice recordings of slow speaking persons faster to save time.
Some mp3 players (e.g. COWON S9) can keep the pitch to avoid funny voice. It would be nice to have the feature as well.
Thanks!

there's no such control in flash though such a feature might be developed in flash using the bytearray class.

Audio stream won't play in Premiere, but does in FCP?

I got some footage to edit from a director who shot the project on the Sony XDCam3. He then converted the footage to MOV's in a software that Sony provides so he could give it to me to edit. He wants the project edited in Premiere Pro 5.5 because that's what he's got on his machine and if he wants to, he'd like to make changes later on. So, the problem is the footage imports fine. The video stream is there and plays, but the audio stream just seems empty. It's there, but no audio. I then tested the same clip in FCP and it works perfectly. Plays fine, video and audio. I'm not sure what the issue is. I'm attaching a screen shot of the specs on the clips if that might help get to the bottom of what my issue is. Thanks so much for any help on this!

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site:forums.adobe.com xdcam
to read other xdcam discussions... one may help

VoIP Phone Call from mobile to PC - Streaming the audio and playing it back

In short:
How can I stream the audio captured from a mobile to PC and play it back.
In brief:
I am trying to develope an application to chat(voice) between a J2ME program and a Java program which is running in a PC.
Currently I am able to send and receive the text message by using SIP protocol after establishing session by using SIP protocol.
As a next step, I want to capture the audio and play back in PC and Mobile.
Now, I am able to capture audio from the microphone of the mobile.
Player p =Manager.createPlayer("capture://audio?rate=8000&bits=8&Channels=1");
                p.realize();
                // get the RecordControl over this Player
                RecordControl rc = (RecordControl)p.getControl("RecordControl");
                // create an OutputStream which the RecordControl will use
                // to write write the recorded data.
                ByteArrayOutputStream output = new ByteArrayOutputStream();
                rc.setRecordStream(output);
                // start the recording
                rc.startRecord();
                p.start();How can I stream it to PC and play it back? Also, I need to send audio captured from PC to mobile and have to play it back.
Pl. do reply.

now I am able to play the stream (with some delay),
while(inputStream.read(buf)!=-1) {
                    try {
                        ByteArrayInputStream recordedInputStream = new ByteArrayInputStream(buf);
                        play2 = Manager.createPlayer(recordedInputStream, "audio/x-wav");
                        System.out.println("Playback player created...");
                        play2.prefetch();
                        System.out.println("Playback player prefetched...");
                        play2.realize();
                        System.out.println("Playback player realized...");
                        play2.start();
                        System.out.println("Playback player started...");
                    } catch (MediaException ex) {
                        ex.printStackTrace();
                    } catch(Exception e) {
                        e.printStackTrace();
                    }But, the problem is , I have to play the audio, as well as capture the audio to create the duplex communication.
Is it possible to do the audio capture and playback simultaneously? If it is not possible, pl suggest an idea to achieve this.
null

How can I get certain devices to play one of the audio streams I uploaded?

I uploaded my Music On Hold Audio Source. I restarted Media services. Then I went to one of my devices and select the audio stream needed for User Hold MOH Audio Source and Network Hold MOH Audio Source. I hear dead air.

Internally I can hear the audio I selected. But when I call in to test from an external devise I hear nothing when I place the call on hold and/or hit the transfer key. If I set everything back to default I hear the MOH internal and external, works fine.
Thanks
Jami

All my audio Podcasts play at half speed in the new iOS 5 Music app. Where to find the speed change control that was there in iOS 4.x?

In iOS 4.x there was a button that changed from 1X to 2X to 1/2X and changed the play speed of the podcast. I can not find it in the new Music app in iOS5, but it seems to be set to 1/2X at the moment. How can I change this?

have the same problem, mine is now playing all at half speed, but only with podcasts! I normally play podcasts at 2x speed but the speed button has disappeared in iOS5, so - this is abviously a bug or the soft reads the old setting from somewhere - and there is no way resetting it - so I hope apple will fix this soon, I really play podcasts every day. and the iPhone is not loud enough and it's batteries aren't cool by design. so..
just to support your problem, maybe there's a free player somewhere until apple fixes that bug? (yes, it is a bug - read this problem in several other forums)

Audio pitch / playback speed issue, MacBook Pro 10.4.10

I experienced a very strange audio pitch and speed issue that affected a recording I was making in Ableton Live 6.0.3.
Setup is MacBook Pro 2.16GHz, Mackie Onyx Satellite FW interface for audio, recording straight to internal HD.
I made two multitrack recordings (3-4 tracks each) which played back fine initially within Live. I then rendered the audio to AIFF in order to burn data and audio CDs.
Testing the playback in iTunes, the audio was strangely pitched lower than what we originally recorded. Checking other tracks from my iTunes library, they were playing back FASTER or higher-pitched than normal, and so did audio streamed from MySpace that I was familiar with.
CDs burnt from these AIFFs exhibited the same "lower pitch" / slower playback.
Reopening the Live Set, they were now also playing back lower pitched than what we had heard just minutes beforehand during the recording / mixing.
After I let the computer sleep for a few hours, I came back and checked -- system and internet audio was now playing back at normal speed, but the Live Set was still lower-pitched - the individual WAV files in the set were all pitched lower.
The Live recording prefs were stock standard - set to record 24 bit WAV at 44.1Khz. Since the issue seemed to affect non-Live audio as well, I'm guessing it was something more at the CoreAudio level?
I managed to salvage the session by taking the exported AIFFs into Tracktion 3 and using the pitch change function in the Clip Properties pane. One track was 1.5x off, the other was 1.125x off.
I'm at a complete loss as to why this would happen. It's a first (and hopefully only) occurrence. Has anyone had this happen to them? Could this be some sort of intermittent hardware (clock) glitch? Something to do with 6.0.3 and OS 10.4.10?
I do need to take this MacBook Pro in for servicing - it experienced the "bulging battery" issue and has a partially dead keyboard (the keys near the upper right) - but even with those issues I've not had audio issues like this.

In any case, if my Mac had problems, I'd send it in for service....!!!
About your problem, I don't think that it depends on hardware.
I'd check Live configuration and the SR of the audio files: you know, Live has so many features to modify speed and a lot of other parameters that bacomes easy to forget something.
Try recording something with Garage Band so you will be sure if there is a real problem.
cheers
rob

Audio Streaming with NetStream on LCDS or FDS

Hi. I can't make audio streaming working on FDS neither on
LCDS. I want to record audio on server.
When trying to :
quote:
new NetStream(this.netConnection);
i get
quote:
01:19:48,140 INFO [STDOUT] [Flex]
Thread[RTMP-Worker-2,5,jboss]: Closing due to unhandled exception
in reader thread: java.lang.IndexOutOfBoundsException: Index: 0,
Size: 0
at java.util.ArrayList.RangeCheck(Unknown Source)
at java.util.ArrayList.get(Unknown Source)
at
flex.messaging.io.tcchunk.TCCommand.getArg(TCCommand.java:260)
at
flex.messaging.endpoints.rtmp.AbstractRTMPServer.dispatchMessage(AbstractRTMPServer.java: 821)
at
flex.messaging.endpoints.rtmp.NIORTMPConnection$RTMPReader.run(NIORTMPConnection.java:424 )
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPo olExecutor.java:665)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolEx ecutor.java:690)
at java.lang.Thread.run(Unknown Source)
The same code works fine on RED5.
What's wrong?
RTMP channel definition is :
quote:
<channel-definition id="my-rtmp"
class="mx.messaging.channels.RTMPChannel">
<endpoint uri="rtmp://{server.name}:2040"
class="flex.messaging.endpoints.RTMPEndpoint"/>
<properties>
<idle-timeout-minutes>20</idle-timeout-minutes>
<client-to-server-maxbps>100K</client-to-server-maxbps>
<server-to-client-maxbps>100K</server-to-client-maxbps>
</properties>
</channel-definition>

There are seeral apps that play music over wifi or 3G
Pandora, I(heart)music, Bing100, all free,

Audio Stream - Play Speed

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