Encoder live audio in stereo

Hi sorry for my english,im try to create a radio online, but
don't find what is the best option to transmit single audio in
stereo, Im try with Flash media Encoder but the audio encoder
configuration its more limited and I believe that encoder only in
Mono.
It is possible to encoder audio in stereo with FME ?
What is the best option to encoder live audio for a Web Radio
Online with FMS ?
Thanks in advance.

And how increase the sampling rate and/or the bitrate of the
audio codec?
Sampling at 22050 and a bitrate ceiling of 32kbps are both
quite limiting. Is there any chance of at least increasing the
bitrate to something like 128kbps or more?
Thanks in advance.

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How to encode live audio to a-law?

Hi all,
I would like to know how to configure the processor to encode live audio to a-law datasource. I got something like this when I tried to start processor:
Failed to build a graph for the given custom options.
Failed to realize: com.sun.media.ProcessEngine@765a16
Cannot build a flow graph with the customized options:
Unable to transcode format: LINEAR, 44100.0 Hz, 16-bit, Stereo, LittleEndian
, Signed
to: alaw, 8000.0 Hz, 8-bit, Mono
outputting to: RAW
Error: Unable to realize com.sun.media.ProcessEngine@765a16
Thanks.

I think the format has to be one of those included in the getSupportedFormats().
For example if you have a single track processor,
Format[] formats = processor.getTrackControls()[0].getSupportedFormats()
This should be callled on a confured processor. it returns an array of supported encoding/transcoding or output format for this configured processor. setting any of these should be successfull.
Once format is set, the processor can be realized and started
In your case I guess you have to find the format in the array that best matchs your a-law format then use this format from the array to set to the processor. (dont worry, their will be a few a-law formats)
I think that in your case, transcoding 16-bit to 8-bit was the problem.
Also, capturing at lower than 44100.0hz when transcoding to alaw 8000 could be considered, I mean capturing at 8000.0hz could work too

Encoding live audio

I'm new to Tiger, but have two Panthers, all networked. I want to download audio from analog to my hard drive. My old mac 9 did this transparently, creating AIFF files, but I can't figue out how to do it in OSX 10.3.9 or 4. I've tried iMovie, which works, but out paces my hard drive so I can only get about a minute or so per track. Any suggestions? I don't want to buy Quick Time Pro, unless that's my only option.
MacBook, iMac350, Power PC g4 Dual Mac OS X (10.3.9) and 10.4, latest update

GarageBand.

LIVE audio stereo stream

Hi there,
I'm looking for a way to offer a LIVE audio stereo stream to
the web client using Shockwave plug-in.
I was "banging my head off forums and search engines" (as
flashcomguru nice says) for some weeks
to find a way to stream LIVE audio stereo to Flash Media
Server but I couldn't find one viable direct
solution for this platform.
The client Flash Media Server app uses Microphone.get method
to capture sound from soundboard
which unfortunately is mono. it uses a speech Nellymoser
codec, at which music sounds pretty OK at 44Khz.
Possible solution: I can capture the LIVE line-in stereo
sound using two soundcards and thus beeing able to
create two sepparate mono audio streams one for left, one for
right using the only available Microphone.get method.
It will then maybe need some synchronization server scripts
later.
The trick is: In Director I use two .swf movies (action
script controlled) to connect to server
and play the streams but I couldn't find a way to direct the
streams to a specific channel
(one of the 8 available) from which point I can use the LINGO
Sound Channel PAN property, like this:
sound(1).pan = 100 for right
sound(2).pan = -100 for left
From all that I read I came to the conclusion that you can
use the Sound Channel PAN property only to
.swa imported and prerecorded audio cast members, not to the
live audio stream which is played roughly
in the main sound output channel to which I can't apply the
Sound Channel PAN property.
The key is to route those two streams left and right in
Director.
Any hints?
Thanks for reading,
My deepest respect,
hOver

The microphone code is very similar to what you have posted. I can successfully use the enhanced microphone. When it is enabled, the issue I am having is exhibited.
A simple test I am using:
Use ffmpeg to stream a stereo mp3 file to the media server. I am using the following ffmpeg command line:
ffmpeg -re -i ~/alone.mp3 -vn -acodec copy -ac 2 -f flv rtmp://myserver.com:1935/video/3Daudio/alone
In this case the file is encoded at 44.1 kHz.
The client uses a netstream to play with bufferTime = 0
Without the microphone, the playback is as expected. With a normal microphone, not the enhanced microphone, the playback is as expected but there is little to no echo cancellation.
When the enhanced microphone is enabled, again using similar code to your post, the mp3 playback becomes severely distorted and is unacceptable.
In my opinion, this is an issue with the AEC algorithms of the enhancedMicrophone and stereo playback of a 'live' stream. If I modify the client playback code to bufferTime > 0, the mp3 playback is normal but there is no echo cancellation.
Thanks,
Sam

Flash Media Encoder Live Problem

FME locks up good ! FME freezes . FME Stops sending streaming audio .
// I hope this is posted in the correct forum.
I'm using Adobe Flash Media Encoder Live 3.0.1.5963 .
Windows XP Pro SP 3
Pentium 4 3.06 ghz 'dual core' cpu
1.5 GB rambus 800 mhz
MP3
44,100
192kbps
stereo
When streaming audio, FME locks up good and stops sending audio, usually after 8 minutes.
I have to force down my machine with the reset button.
I even tried with no video. Same problem.

Update:
The same problem exists in Flash Media Encoder version
1.0.1.460.

Can't get Encoded Digital Audio to work with HDMI again

I like to connect my 15" Retina Macbook to my Pioneer VSX-1121-K receiver using a high speed HDMI cable (high speed for 3D). My sound settings for a long time have been very reliable; in Audio Midi Setup I had the HDMI output set to 48 kHz + "Encoded Digital Audio" and had no major issues. My encoded Dolby Digital and DTS 5.1 signals were being passed through to the Pioneer receiver just fine.
So then I got Mavericks recently and everything seemed fine for a couple of days; when suddenly, Audio Midi Setup decided it never wants to allow the "Encoded Digital Audio" format to work.
I select VSX-1121 under System Preferences/Sound, but only get the standard blah PCM over the HDMI. Here's the weird part I don't understand: when I go to Audio Midi Setup and change the format from "2ch-24bit Integer" to "Encoded Digital Audio", it automatically switches the sound to Built-In Output and doesn't budge when I tell it to use the HDMI output.
I tried changing the sound effects & alerts to the Pioneer and back to Built-In Output, but that didn't affect anything. I've tried restarting, disconnecting the HDMI and plugging it back in, turning the receiver off/on, turning HDMI Control off/on, tried a different HDMI cable and receiver input -- all no dice.
It won't let me select 96 kHz for the HDMI either. What up with that? I was fooling around with FLACs in 192 and 96 kHz about a month ago with no problems whatsoever, and playing 5.1 DVDs without any of this weirdness. If it's somehow Mavericks' fault I want a big fat patch on this.
Other details: receiver's connected to a Panasonic VT30 that I use as a second screen with the Macbook for movies and stuff. Also have a current model AppleTV connected. I assume they're both not affecting anything.
Any solutions or insights would be appreciated.

I had a similar problem. Took me a while to figure out, but the problem was in the HDMI settings in the receiver, NOT the software.
My setup:
Macbook Air > Mini Display Port to HDMI converter into Onkyo Receiver > HDMI Out of Onkyo into Panasonic TV.
Symptoms:
I was getting stereo fine, but not 5.1 (options grayed out etc). You were on the right track; I unplugged the TV which opened up all the multi channel options for HDMI. Turns out the HDMI out settings in the receiver were set to pass Audio to the TV. So the Audio Device Settings on my Mac viewed the TV as the destination device. But as the TV only supports stereo, that's all I could select through Audio Device Settings and VLC etc.
Solution:
On the receiver I went to Setup > Hardware Settings > HDMI and switched the audio off for HDMI Out. Now the Mac sees the receiver as the final destination and I can select HDMI (Encoded Output) etc. from VLC. That sends proper Dolby Digital 5.1 etc. nicely.
Note:
I can select all the multi channel options for HDMI in Audio Devices Settings (as supported by my Onkyo Receiver), but I just left mine at 2ch-24 bit. Seems as long as you select Encoded Output in VLC it will send 5.1 perfectly and no issues with regular stereo playback for music.

Steps to Publish Live Audio for HTTP Streaming

I wanted to confirm some steps in order to stream Live Audio from FMS to a mobile device using HTTP Streaming and HTML 5 audio/video tags. I have a system setup like below:
Lets say my application which recieves the live audio is called CLASSROOM.
Lets say my application instance is called "TEST"
So I have application code like:
In "onAppStart()"
this.broadcast_live_stream = Stream.get("f4f:livestream");
this.broadcast_live_stream.liveEvent = "TEST";
this.broadcast_live_stream.record("record");
To play the incoming audio:
application.broadcast_live_stream.play(streamName); // name of the stream sending audio to the server
Thus, I have a folder:
Flash Media Server 4.5\applications\CLASSROOM\streams\TEST\livestream
which contains a bootstrap, control, meta, f4f, and f4x files.
Since I specified the Event name as "TEST", I also created the folder:
Flash Media Server 4.5\applications\livepkgr\events\_definst_\TEST
Which contains event.xml:
<Event>
<EventID>TEST</EventID>
- <Recording>
<FragmentDuration>4000</FragmentDuration>
<SegmentDuration>400000</SegmentDuration>
<DiskManagementDuration>3</DiskManagementDuration>
</Recording>
</Event>
and manifest.xml:
<manifest xmlns="http://ns.adobe.com/f4m/1.0">
<media streamId="livestream" bitrate="100" />
</manifest>
Should I then be able to create a video tag and hear the live audio:
<video id='slide1' controls='controls'><source src='http://fms-dns/hls-live/livepkgr/_definst_/Test/livestream.m3u8'></video>
I am not sure what other steps are needed, or a good way to test. I don't understand how the Live Media Encoder would be needed in this situation.

So I implemented the above change, using code from the livepkgr.
My custom application is called Unity3, and the instance is Test, and I am trying to publish to an event called "Test".
I now have:
applications\Unity3\streams\Test\livestream
Which contains segment files, which update when I send audio in my application.
I have:
C:\Program Files\Adobe\Flash Media Server 4.5\applications\Unity3\events\Test\Test
Which contains my event.xml (EventId Test), manifest.xml (StreamId livestream). I also have a ".stream" file in this folder. The contents of which are:
<?xml version="1.0" encoding="UTF-8"?>
<stream xmlns="http://ns.adobe.com/liveevent/1.0">
<type>
f4f
</type>
<name>
livestream
</name>
<path>
C:\Program Files\Adobe\Flash Media Server 4.5\applications\Unity3\streams\Test\livestream
</path>
</stream>
So everything there seems to be good. I try to use:
<video id='live' controls='controls'><source src='http://[fms-dns]/hls-live/Unity3/Test/Test/livestream.m3u8'></video>
or
<audio id='live' controls='controls'><source src='http://[fms-dns]/hls-live/Unity3/Test/Test/livestream.m3u8'></audio>
I don't hear audio, the controls don't seem to respond as though they recognize a source. Are there certain browsers which can be confirmed work? Any other mistakes stand out?
Thanks.

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()
application.myStream=Stream.get("foo");
application.myStream.record();
application.onPublish = function (client,stream)
      var streamName = stream.name;
      application.myStream.play(streamName,-2,-1};
The problem is that the Stream.play plays only 1 live stream at a time.As soon as a the 2nd live stream is sent to FMS then Stream.play stops playing the previous live stream.So,only the latest live stream is getting recorded.Whereas i need to record all the live streams in the new stream simultaneously.
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.

I can't select "audio output stereo" on a track in the arrange window

When I create a new song, in the Arrange window I can
choose "audio output stereo" for a given track, and
access the mixer's output from there. Fab.
When I open a song that I oringally created using Logic 5,
"audio output stereo" does not appear.
Is this something about the file format?
(a) is there something simple to do to enable that for
older songs, or (b) is there a way to convert older song files to LE7?
thanks,
fred, san rafael.
[email protected]

Sorry, je suis un idiot.
FYI. I went into the Environment window and found "Output 1-2"
to be un-checked. Checking it now makes "audio output stero" an available option in that song.
Thanks for listening.
fred

Capturing mono VHS footage, how do I convert audio to stereo?

I am creating dvd's from some old VHS tapes, and the audio track is mono, I want to know how to convert audio to stereo? Do I start with the audio settings on Mono or stereo, and then what is the next step to get mono audio converted to stereo?
As always thanks in advance for reading and replying to my post.
Sebastian

SebastianMacLuver wrote:
I am creating dvd's from some old VHS tapes, and the audio track is mono, I want to know how to convert audio to stereo? Do I start with the audio settings on Mono or stereo, and then what is the next step to get mono audio converted to stereo?
Are you wanting to add a second channel of audio along side the mono track?
Or, are you wanting to double the mon track into a faux-stereo track?
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But if your VHS audio is not split into two separate channels of sound, then there is no way to get true stereo.
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This isn't true stereo but will create more of an aural landscape that might satisfy your request.

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I have a first generation Mac Pro, and I've just recently upgraded to Lion. I used to play a fair bit of DVDs on the computer, but recently I've slacked off doing that. Today I popped in a DVD to play and then opened DVD Player up. Everything worked fine as it was supposed to. I've got the DVD player set to send digital audio out so I can get surround sound through my receiver. When I quit DVD player I don't get sound anymore through the optical out unless it's encoded digital audio. I've had that problem before, and to solve it I'd go to Audio Midi Setup and change the format to what it was prior to being set to "Encoded Digital Audio" by DVD Player. However, now with the upgrade to Lion it will not switch back. The option to do it is there, and I can click on 16, 20, or 24bit audio all day long and I won't get audio output from that port unless I restart the computer.
This is obviously a system bug that needs to be reported to Apple if they aren't aware of it already, but what I'm wanting to know is how can I avoid restarting to get audio back? Restarting Core Audio doesn't do the trick as I've already tried that.

From the iPod's Main Menu choose Videos -> Settings and make sure TV Out is set to Off.
Otherwise, try a hard reset as well. To do this, press and hold both the Select (Center) and Menu buttons together long enough for the Apple logo to appear.
B-rock

Streaming live audio in a flash movie

Hi, I'm working on a website for a local radio station, and I
want to be able to stream a live audio feed of the radio station to
a flash movie. Right now all I really know is that the URL to get
this live feed is
http://kpacradio.pacific.edu:8000
- if you put that into Windows Media Player it will start the radio
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user can just stream it from a website rather than having to
introduce windows media player into it? Thanks a lot.
David

No. The Flashplayer can't connect to a windows media
serverYou'd need to capture the stream and republish to FMS, or
broadcast directly to FMS instead of WMS.

Can i make Live Audio/Video application between 2 users

Hello,
I am new to FLASH and FLEX.
I want to know if i can make a Live Audio/Video application(
using Microphone and Camera) for a website by using FMS. If yes
then should i use FMSS or FMIS. I will be using FLEX Buidler IDE .
Any one who has made this type of application or link to a
tutorial.
What i would like to make is like an application of Webcam
with 2 users can see/view each other and also talk on web site. And
alos how can i embed this application in java(EE) project.
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problem.
Hopefully i have explained my probelm.
Regards,
Saad

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Safari not playing live audio when tapping the play pause key in IO5

Hi. I just upgraded Ipad 2 to IO5 and now when using Safari to play "listen live" audio from various websites the play/pause button only works one out of 15 taps; I have to tap the reload icon to get it to start and stop...any suggestions? Thanks, Steve

Tap Settings > Safari
Then tap Clear History then tap Clear Cookies and Data
Then restart the iPad.
Hold the On/Off Sleep/Wake button down until the red slider appears. Slide your finger across the slider to turn off iPhone. To turn iPhone back on, press and hold the On/Off Sleep/Wake button until the Apple logo appears.

Hi, planning to buy MD101, I will most be working on photoshop, playing live/audio production, occasionally render videos, mild gaming-prototype.gta4 types..my question is mac or windows? my budget stops at MD101 and no further :/

Hi, planning to buy MD101, I will most be working on photoshop, playing live/audio production, occasionally render videos, mild gaming-prototype.gta4 types..my question is mac or windows? my budget stops at MD101 and no further :/

Hey thanks for the reply
its not like i must...but i do prefer apple for build quality and the way the os uses the hardware..
Priority of the laptop will be:
1- Going live with it, using softwares like ableton like or garageband to trigger samples and ambient patches with MIDI keyboard.
2- Designing on photoshop
3 - Occasional video rendering mostly non hd but good quality like youtube 720p
4 - Gaming when i am bored - I am not at all into gaming but i would surely love to play some
But i want something that will be durable/storngly built and its hardware/processor good enough to run for 3-4 years.
Now if a laptop then which one?
Thank you

Encoder live audio in stereo

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