Flash :: Suitable Is For Handling Audio Processing?
Jun 30, 2010
This is not a specific question, instead I'm trying to get an idea of flashes capabilities. I'm building a website that has an Mp3 upload component on it. Serverside I can use the command line audio tool "SOX" for most of my heavy lifting but I'd like to offload some of it onto a flash client. Essentially, client side, needs to be able to do the following: User selects an mp3 file off their harddrive. Render it as a waveform. Display a scaled indication of 30 seconds of the waveform that the user can drag backwards and forwards. This will record a start time. Upload either the full mp3 or just the selected start time plus 30 seconds.
I've never programmed anything in flash before so I'm not really sure what it's capable of.
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Nov 10, 2010
I've seen some example of using a Pixel Bender for mixing two tracks together (per shader passes). However, would it be technically possible to write a Pixel Bender kernel that could do this?
[Code]...
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Apr 3, 2012
There may be more than one answer to this, but I'd like to know if there's some technology out there that exists to handle Audio Processing / Playback in realtime, so that Flash can:
Interface with the technology / plugin to generate sounds with no delay or lag. Apply DSP effects (Reverb, Delay, Dynamic Range Compression / Expansion, Distortion, etc). Manipulate DSP parameters in realtime (sweeping an EQ filter's band or Q).
The most important thing of all, would be for this technology to be available to most users, as it would likely be used for Gaming environments or online Audio production, even. So far, Flash has a few ways to manipulate Audio Data, such as the SampleDataEvent, Andre Michelle's Popforge library, chiptune libraries like SiON, and possibly some other unheard of libraries.
I'm not really convinced though, that these methods are the optimal ways to create interactive sounds - sounds that change depending on game conditions, sounds that closely responds to the users actions. Nothing (that I've seen so far) easily allows developers to create or communicate with a DSP effect in order to manipulate the sound in this way, in realtime.
I know that Flash has the ability to communicate over sockets / ports, so perhaps there is an existing library that can communicate with an external plugin, and can be easily distributed to users at the same time.
Is there such an audio solution out there?
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Jul 24, 2009
A groups of friends are working on a little game that would listen to the microphone as part of the interaction. We've tinkered with processing and flex. What we'd like to know is if anyone has succeeded in:
recording from the microphone using a web app
performing an FFT on this microphone data
In the case of flex, according to the docs "Because sound data from a microphone...do not pass through the global SoundMixer object, the SoundMixer.computeSpectrum() method will not return data from those sources."[1]
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May 27, 2009
what event listener should i use if i want to listen to a String that changes its value from time to time?
Code:
var sampleString:String;
sampleString = "this is a message";
sampleString.addEventListener(????????.????????, runFunction);
[Code]....
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Mar 8, 2012
We're writing a flash application that can download a MP3 file, convert it to a Sound object, get the raw data and make some processing (like adding sounds, change octaves). After the processing, we want to send the data back to the server in chunks, so the server will be able to glue the data together and recover the new generated file. The problem is: if we send to the server "wav" pieces of sound, we are able to glue them together without any problem in the generated file. However, if we convert each wav piece to a mp3 file (so we can send a smaller file to the server) and join the mp3 files at the server, the result is a sound with some problems at the merge point.
This is how we load the mp3 file from the server:
sourceSnd.load(new URLRequest("sample url to mp3"));
sourceSnd.addEventListener(Event.COMPLETE, carregou);
This is how we convert each piece of mp3 to bytearray and wav:
[Code]....
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Aug 6, 2010
If I import an FLV video is there any way to remove the audio, put the audio into a byte array, and then re-add the audio to the flv video?
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Jan 31, 2011
I've been using Processing for around two years now, and I really like it. However, I feel like Flash is a bit more useful for coding games, as it's more universal and flexible. I'm starting to feel like I have no idea what I'm doing, and I really don't get any of the concepts like movie clips and the stage and so forth. In Processing, to make, say, a ball, I might make this:
Ball[] ballArray = new Ball[ 0 ]; //Array to store each ball in
void setup()
{
size( 400, 400 );
[code].....
And that would let me create as many instances as I like, anywhere I like.I haven't the faintest clue how to make a comparable applet in Flash.I've tried making a 'ball' class in a separate .as file, but it gives me an error about too many arguments. I also don't know how to draw a shape directly to the screen.
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Dec 21, 2004
I want the flash movie to allow the users to apply image processing functions on the jpg files that would be loaded by them..
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Feb 15, 2010
I'm working on a Flash intro for a site. After the Flash movie plays I want it to wait three seconds and then send them to the index page. Currently I'm using the action script:
[Code]....
I've got that keyed to the last frame. The issue is at the end of the Flash movie it displays the company logo image. Well with that script added to the last frame it just quickly blips up the logo then takes you to the main page so fast you don't even get to really see the logo. I want the viewer to have a couple seconds to take it in, but then move them along to the main site without them having to look for a button to press.
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Apr 3, 2012
I would like to know if theirs a way where you can type in a text field something like "5*5".
And then on enter, the document would take the database and be able to return 25.
I am quite confused due to the fact that content that you input into a textfield must be a String and when you use the Number() converter the system gets confused.
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Sep 21, 2010
I want to process the credit card details within a flash/swf based form.
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Nov 4, 2004
I have an input textbox, say instance is "inptxt".I'd like to "search" the text inputted by user, e.g. search for letter "e", if user enters "hello", replace all "e" with "s".Idk how to process inputted text...example.fla After looking at the example, you will see that I am trying to do the following:
Code:
var user_input:String = "";
//Create var for inputted text.
var changedtext:String = "";
[code]....
I bolded the part I am actually having trouble with (it's 1 line).
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Oct 30, 2010
Is there a way to process a picture > 4096 x 4096 px in pixel bender? Or any other technique?
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Jun 1, 2011
I'm working on an interactive company, and for each campaign we create dozens of loaders. A loader is a simple flash file contains the following elements:* few lines of code for eRate (counting how many clicks have been done on a banner)* a loader for the source banner from "http://....host.../..../" + w,h + ".swf"* a button that tells what happens when a banner is clicked (different portals as us for different scripts)Is there a way to automate the process of making such files? it takes a 1 minute to make 1 swf, but the amount of loaders make the work a bit longer.I'd like to see an application that asks for a list for sizes + eRate code for each one and the URL for the source banners.
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Jul 28, 2011
I have an input textbox, say instance is "inptxt". I'd like to "search" the text inputted by user, e.g. search for letter "e", if user enters "hello", replace all "e" with "s". How to process inputted text. I attached an example, I am trying to do the following:
Code:
var user_input:String = "";
//Create var for inputted text.
var changedtext:String = "";
//Create var for edited text.
user_input = inptxt.text;
[Code] .....
I bolded the part I am actually having trouble with (it's 1 line).
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Nov 6, 2009
I basically have a form inside of Flash that I need to submit to a server-side processing page, which will then return either json or xml telling if it succeeded or not ( json, xml I suppose ). My version of Flash is CS4 and I'm wondering if there are any libraries or frameworks I can use to accomplish this.
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Sep 20, 2011
I'm creating some image uploader in Flex with client-side image processing. Processing consists of two steps:
1. Resizing (solved)
2. Converting resized image (represented by ByteArray in PNG32 with alpha-channel) to gray-scale PNG with bit-depth = 2 and no color-palette. Is there any existing library that is capable of second step? Something like libpng for C++, maybe?Edit:It seem I stumbled upon rarely encountered problem. However my descision was to create an AS3 class that is capable of converting bitmapData to 2bit grayscale PNG. I used standart PNGEncoder and PNG format specification (which is not so good as I expected) as basis.
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Nov 10, 2011
I'm trying to convert a processing sketch to a flash as3 file, and I'm getting hung up on two of processing's commands - pushMatrix() and popMatrix() - how to convert these in flash?
Essentially I just need to store the matrix of lines I've drawn so far and draw a new line, and this gets done recursively. Here's my code:
var theta;
var xpos:Number = 0;
addEventListener(Event.ENTER_FRAME,draw)
function draw(e:Event) {
[Code].....
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Jan 21, 2010
I am developing a Image uploader using Flash 10. I am using Filereference object to browse images and Loader to show the image:
Sample code:
var tempFileRef:FileReference = FileReference(ev.target);
var oLoader:Loader = new Loader();
oLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, onImageLoad);
oLoader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, onIOError);
oLoader.loadBytes(tempFileRef.data);
It works fine with .jpg and .gif files but when I browse .bmp or .tiff file, I am getting the error:
Error #2124: Loaded file is an unknown type.
Is there a way to load and display browsed .bmp images from desktop?
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Oct 8, 2010
I'm working on a cartoon series in the uk and we use flash, 3d and after effects. I'm building a little pipeline tool to help us compositors do your job (there's hundreds if not thousands of files to be comped for a great number of shows)anyhow, we use flash for the 2d animation and we need to extract pngs. Right now it's a process I can't streamline (ie compers still have to have flash opened to choose which layers to export manually) but I'd like to be able to open flash and launch a specific javascript file ('command')
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Apr 13, 2011
My server is streaming binary audio data (mostly mp3 files) to a client (a browser). This client stores the audio data in memory.
What I'm looking for is a flash audio player that I can input the binary audio data so that it can play the audio file.
Preferably, the flash client is merely a bridge to Javascript so that I can handle everything in Javascript and simply use Flash's audio features, but this is not a requirement.
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Apr 25, 2011
I have a single audio file, I'd like to avoid cutting it up.
I know I can use the sound class, mySound.play(150), to start at 150ms but haven't come across a way to stop the audio say after 500ms or at 650ms.
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May 15, 2007
I'm looking for a (free) flash player that I can embed in my site and use to play a .m4a (.mp4 with AAC audio) file that will be obtained using a URL (i.e. it's not local to the server hosting the web page).I've tried searching on google for one, but either I'm searching wrong or no one has made such a thing. Ideally this would be very simple (small user interface with play button and maybe a progress bar) and it would be easy to have multiple instances of on an html page (can create the player with an <object> tag).
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Nov 3, 2010
I built two flash uploaders using actionscript 3 & actionscript 2 that sends files to a java servlet. The java servlet successfully receives that file, but the flash uploader fires an IOerror #2038 instead of a complete event.
There was another question is my exact same problem, but the answer "clear the cache" was very broad, and the question owner was too lazy to give a detailed description.
[URL]
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Mar 20, 2010
I'm using the FileReference Class under AS2 to pass images to php/imagick for processing and then back to Flash as JPG. The AS is based largely on the Adobe examples here: Adobe Help.Its all working fine across various platforms except that filenames which include spaces never make it to the server - turns out thats about 10% of the images folk are attempting to upload.
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Apr 16, 2011
Flash Player 10.2.153.1and Flash Player 10.2.159.1 are crashing my standalone application. Later with version 10.1 the application run ok, never crashes but was taking more than 90% CPU. The new Flash Player solve the problem of resources, and drop down CPU to 30%, but the application crashes always after a while, unespectly, or if I open the window of other application.
In the other hand when I disable the harware acceleration at the swf settings, the application goes crazy and start to make rapid flashes, and frame rate goes down to 8. [URL]. Right click on the Flash logo, Settings,then UNcheck the hardware acceleration in Display Settings.)
I'm on a Mac Mini Core 2 Duo with Mac OS X 10.6.7 (the last Snow Leopard these days). The graphical card is Nvidia GeForce 9400M.
I did test the application at a Mac Book Pro core i5, Mac OS X 10.6.7, graphica card Nvidia GeForce GT 330M and the application is more stable but finally crashes too.
Finally if I export my application with GPU Hardware acceleration at Publish Settings, my application crashes almost inmediatly after I open it in each of the computers.
My guess is that the new Flash Version is using my graphical proccesor in a corrupted way.
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Mar 3, 2011
I get a working application in Flash made that lets the user click to create blocks which subsequently gravitate towards the mouse. I made the exact same thing in Processing too, just to compare speeds.However, when I run the Flash version and add around 15-20 blocks, the framerate drops to 5-10 FPS.In the Processing version I can add ~60 with no noticeable slowdown. What's the deal, Flash?
Links to each version's source:
Flash version
Processing version
Here is the source for each in case you are a wizard and can help just by glowering at the code sternly and telling it to behave:
Flash version:
blocks.fla
import flash.events.Event;
import flash.display.MovieClip;
[code]....
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Jun 10, 2011
I am trying to create an app that will read files form a local folder on a memory stick (flash drive) which the app will be on too, then I need to be able to move one of the files in this local directory to a specified folder on the system BUT there has to be a variable taken from a text input to complete something along the lines of
[Code]...
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Apr 28, 2009
I am having mainly 2 problems in Flash for some time and I need some clarifications on them.
1. Handling pages.
How do I handle working with pages in Flash? Do I create a frame for each page and place the content of the page in that frame and when needing to go to a page I simply go to it's frame? Or do I use ActionScript to put and remove content from the stage and create every page in this way? What I mean by this is: if a page has a menu and a picture, I use ActionScript to put the menu and the picture there. If the next page has some text and a button, I use ActionScript to remove the menu and the picture from the last page and put the text and the button from the new page.
The first method seems simpler but that means that if the page has some content that needs to be loaded (a picture, for example), this content will need to be loaded every single time the page is opened.
The second method requires more work but is it more efficient ? When I remove the content from the page, do I move it to a negative x and y so that it cannot be seen or do I remove it completely and just load it again the next time the page is opened?
2. Handling a flow communication with PHP.
I constantly need to communicate back and forth with PHP. I use a LoadVars variable to send data to PHP (using "POST") and I use an XML variable to retrieve data from PHP (I use the "sendAndLoad" method). The data sent by PHP is in an XML structure. The problem here is that I need to have different channels working. I need to receive several different types of data. Do I create a set of LoadVars and XML variables for each type of data that I need to receive or do I simply use only the one set and use an ID variable to specify with which type of data I am working at the moment ?
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